Mindray A3 Service Manual
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Mindray A3 Service Manual

Anesthesia system
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Table of Contents

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Anesthesia System
A N E S T H E S I A S YS T E M
A N E S T H E S I A S YS T E M

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Table of Contents
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Summary of Contents for Mindray A3

  • Page 1 Service Manual ™ ™ Anesthesia System A N E S T H E S I A S YS T E M A N E S T H E S I A S YS T E M...
  • Page 2 Service Manual ™ ™ Anesthesia System A N E S T H E S I A S YS T E M A N E S T H E S I A S YS T E M...
  • Page 3 A5™ and A3™ are U.S. trademarks of Mindray DS USA, Inc. Selectatec® is a registered trademark of Ohmeda. Copyright © Mindray DS USA, Inc., 2010-2017. All rights reserved. Contents of this publication may not be reproduced in any form without permission of Mindray DS USA, Inc.

  • Page 5: Table Of Contents

    Monitoring Products Mounting and Electrical Connection (if available)..................2 - 19 Functional Tests....................................2 - 20 Breathing System Leak Test..................................2 - 20 Display Setup Check......................................2 - 27 O2 Sensor Calibration(Only for A3's and A5's without an AG module) ..................2 - 28 A5/A3™ Service Manual 046-001141-00...
  • Page 6 Check the Sensor Zero Point ..................................3 - 18 Check the Flow Sensor Accuracy ................................3 - 19 Check the Pressure Sensor Accuracy................................. 3 - 23 Check the electronic flowmeter accuracy ............................... 3 - 28 Pneumatic Leak Tests ..................................3 - 31 046-001141-00 A5/A3™ Service Manual...
  • Page 7 Troubleshooting Guidelines ................................5 - 2 Identify the problem ......................................5 - 2 Avoid shorting component leads together ...............................5 - 2 Use the proper equipment ....................................5 - 2 Clean up the repair area....................................5 - 2 Technical Alarms Check..................................5 - 3 A5/A3™ Service Manual 046-001141-00...
  • Page 8 Remove the Back Upper Cover and Back Lower Cover Assemblies....................6 - 60 Remove the Front Upper Cover, Median Plate and Front Lower Cover Assemblies ............... 6 - 62 Disassemble the Automatic/Manual Ventilation Switch Assembly ....................6 - 64 Remove the APL Valve Assembly ................................6 - 66 046-001141-00 A5/A3™ Service Manual...
  • Page 9 Ordering Replaceable Parts .....................................7 - 2 Diagrams and Tables......................................7 - 3 Warranty................................8 - 1 Warranty Statements..................................8 - 2 Disclaimers ......................................8 - 3 Manufacturer's Responsibility ................................8 - 3 Phone Numbers and How to Get Assistance ..........................8 - 3 A5/A3™ Service Manual 046-001141-00...
  • Page 10 Table of Contents This page intentionally left blank. 046-001141-00 A5/A3™ Service Manual...

  • Page 11: Foreword

    The use of anti-static or electrically conductive respiration tubes, when utilizing high frequency electric surgery equipment, may cause burns and is therefore not recommended in any application of this machine. WARNING: Possible electric shock hazard. The machine may only be opened by authorized service personnel. A5/A3™ Service Manual 046-001141-00...

  • Page 12: Cautions

    This device uses high pressure compressed gas. When attaching or disconnecting backup gas cylinders, always turn the cylinder valves slowly. Use the A5/A3 flow meters to bleed down the pressure, watching the cylinder gauge indicate the depleting cylinder pressure, before disconnecting the cylinder from the yoke. Always open and close cylinder valves fully.

  • Page 13: Notes

    CAUTION: After changing the CO2 absorbent, carry out a system leak test. CAUTION: Only Selectatec™ compatible vaporizers with Interlock-System may be used with the A5/A3 unit. CAUTION: After each exchange of a vaporizer, carry out a system Leak test. CAUTION: Do not clean the machine while it is on and/or plugged in.
  • Page 14 Introduction Notes This page intentionally left blank. 046-001141-00 A5/A3™ Service Manual...

  • Page 15: Theory Of Operation

    Electrical and Pneumatic Connections ............................1-4 Gas Flow ........................................1-18 Anesthesia System Components..............................1-33 The Breathing System ..................................1-36 Ventilator UI....................................... 1-41 Ventilator Control and Drive ................................1-41 Ventilator Pneumatic- O2 Drive Gas............................1-72 A5/A3™ Service Manual 046-001141-00 1 - 1...

  • Page 16: Introduction

    The traditional bellows system is driven by oxygen and makes patient disconnections clearly visible. The A5/A3 fresh gas dosing subsystem offers the ease of use and features of a traditional anesthesia system. The dual-flow tubes electronic flowmeter, which includes redundant numerical readouts, displays the O2, N2O, and Air flows at all times.
  • Page 17 DC power for its main system functions while charging its internal battery supply. In case of AC power failure, the A5/A3 operates on battery power for a minimum of 75 minutes with one (1) new battery installed (A3) or 150 minutes with two (2) new batteries installed (A5). A recessed main switch is provided to power the system ON and OFF.

  • Page 18: Electrical And Pneumatic Connections

    J3 Mon Brd B9/B10/B11: PF-300 System Switch CO2 Switch B5 J1 Circuit Switch Manual/Auto Switch Oxygen DB50 sensor 15" Inverter O2 Source Switch Pressure Switch Top lighting Switch FIGURE 1-1 A3 Electrical Connections 1 - 4 046-001141-00 A5/A3™ Service Manual...
  • Page 19 Mother Board 801-0631-00108-00 Warning Light Board 801-0631-00019-00 Indicator Light Board 801-0631-00004-00 Touch Screen Control Board 801-0631-00018-00 Display Interface Board 801-0631-00017-00 A3 CPU Board 801-0633-00004-00 B9-11 Ventilator Control Board 801-0631-00027-00 Sensor Interface board 801-0631-00089-00 Top Lighting Board 801-0631-00039-00 Fresh Flow Sensor Board...
  • Page 20 Cable, Inverter LED (old) Cable,Screen Backlight (new) 009-000974-00 (old) NOTE: When there is a Screen Backlight Board (See 009-006731-00 (new) section 1.6.1.3 (pg. 1-43) "Screen Backlight Board"), please use the new cable. Cable, Display Lighting 009-000986-00 1 - 6 046-001141-00 A5/A3™ Service Manual...

  • Page 21: Electrical Connections (A5)

    J3 Mon Brd B9/B10/B11: PF-300 P15 J1 System Switch P22 J1 CO2 Switch Circuit Switch Manual/Auto Switch Oxygen DB50 sensor 15" Inverter O2 Source Switch Pressure Switch Top lighting Switch FIGURE 1-2 A5 Electrical Connections A5/A3™ Service Manual 046-001141-00 1 - 7...
  • Page 22 Cable, Touchpad 009-000972-00 Cable, System Switch 009-001776-00 Cable, Ventilator 009-000979-00 Cable, Breathng System 009-000980-00 Cable, Sodalime Canister Switch Cable 009-000987-00 Cable, Circuit Switch 0621-20-78593 Cable, O2 Pressure Switch 0621-20-69588 Cable, Top Lighting A 009-000982-00 1 - 8 046-001141-00 A5/A3™ Service Manual...
  • Page 23 Cable, Inverter Cable(old) Cable,LED Backlight Input(new) 009-000988-00 (old) NOTE: When there is a Screen Backlight Board (See 009-006382-00 (new) section 1.6.1.3 (pg. 1-43) "Screen Backlight Board"), please use the new cable. Cable, Display Lighting 009-000986-00 A5/A3™ Service Manual 046-001141-00 1 - 9...

  • Page 24: Pneumatic Connections (A3)

    Electrical and Pneumatic Connections Theory of Operation 1.2.3 Pneumatic Connections (A3) FIGURE 1-3 A3 Pneumatic Connections 1 - 10 046-001141-00 A5/A3™ Service Manual...
  • Page 25 082-000521-00 O2 Cylinder Yoke 082-000521-00 N2O Pipeline Assembly 082-000662-00 Exhalation Valve Assembly 082-000521-00 Auxiliary Air Assembly 082-000520-00 Auxiliary O2 Assembly 082-000522-00 Auxiliary Gas Outlet M6G-020026--- Auxiliary Air Assembly 082-000520-00 O2 Needle Valve 082-000522-00 A5/A3™ Service Manual 046-001141-00 1 - 11...
  • Page 26 082-000522-00 O2 Poppet Valve 082-000522-00 O2 Flow Sensor 082-000522-00 O2 Pipeline Assembly 082-000521-00 082-000521-00 Air Needle Valve Restrictor Assembly 082-000520-00 N2O Needle Valve N2O Flow Sensor 082-000524-00 Three-way Connector 082-000583-00 Three-way Connector 082-000582-00 1 - 12 046-001141-00 A5/A3™ Service Manual...

  • Page 27: Pneumatic Connection (A5)

    Theory of Operation Electrical and Pneumatic Connections 1.2.4 Pneumatic Connection (A5) FIGURE 1-4 A5 Pneumatic Connections A5/A3™ Service Manual 046-001141-00 1 - 13...
  • Page 28 O2 Pipeline Assembly 082-000521-00 O2 Cylinder Yoke 082-000521-00 082-000521-00 N2O Pipeline Assembly 082-000662-00 Exhalation Valve Assembly 082-000521-00 Auxiliary Air Assembly 082-000520-00 Auxiliary O2 Assembly 082-000522-00 Auxiliary Gas Outlet M6G-020026--- Auxiliary Air Assembly 082-000520-00 1 - 14 046-001141-00 A5/A3™ Service Manual...
  • Page 29 082-000522-00 O2 Poppet Valve 082-000522-00 O2 Flow Sensor 082-000522-00 O2 Pipeline Assembly 082-000521-00 082-000521-00 Air Needle Valve Restrictor Assembly 082-000520-00 N2O Needle Valve N2O Flow Sensor 082-000524-00 Three-way Connector 082-000583-00 Three-way Connector 082-000582-00 A5/A3™ Service Manual 046-001141-00 1 - 15...

  • Page 30: Connections Between Pneumatic Circuit, Breathing System And Ventilator Control Board

    Electrical and Pneumatic Connections Theory of Operation 1.2.5 Connections Between Pneumatic Circuit, Breathing System and Ventilator Control Board FIGURE 1-5 Control Board Connections 1 - 16 046-001141-00 A5/A3™ Service Manual...
  • Page 31 Hardware Box Connector Ventilator Control Board A21-000007--- Hardware Box Connector Ventilator Control Board A21-000007--- Hardware Box Connector Ventilator Control Board A21-000007--- Hardware Box Connector A21-000007--- Three-way Valve A21-000007--- Two-way Connector M02A-10-25945 Three-way Connector M90-100030--- A5/A3™ Service Manual 046-001141-00 1 - 17...

  • Page 32: Gas Flow

    Gas Flow Theory of Operation Gas Flow 1.3.1 Pneumatic Circuit Diagram FIGURE 1-6 Pneumatic Circuit Diagram 1 - 18 046-001141-00 A5/A3™ Service Manual...

  • Page 33: Parts List

    Pressure Sensor Oxygen Ratio Controller (ORC) AGSS (AGSS Transfer and Receiving System) Electronic Flowmeter Sensor Check Valve Double-vaporizer Manifold Back Pressure Valve Check Valve Poppet Valve Pressure Relief Valve Needle Valve Adjustable Restrictor A5/A3™ Service Manual 046-001141-00 1 - 19...

  • Page 34: Key To Symbols

    The Anesthetic Gas Delivery System is connected to the anesthetic agent delivery device (vaporizer), breathing system, and anesthetic ventilator; and outputs fresh gas. The following figure shows the pneumatic circuit of the Anesthetic Gas Delivery System. FIGURE 1-7 Pneumatic Circuit Diagram 1 - 20 046-001141-00 A5/A3™ Service Manual...
  • Page 35 300ml, N2O can enter the needle valve (58) through ORC 25. After passing through the needle valve (58), the pre-set pneumatic resistance (59) controls the O2 and N2O proportions and ensures the minimum O2 concentration. FIGURE 1-8 Gas Supply Output A5/A3™ Service Manual 046-001141-00 1 - 21...
  • Page 36 (28) through the CGO (29) assembly to the breathing system. The flushing O2 also enters the breathing system through the CGO (29) assembly. FIGURE 1-10 Outlet/Inlet of Anesthetic Agent Delivery Device 1 - 22 046-001141-00 A5/A3™ Service Manual...
  • Page 37 200 kPa through the regulator (23). The Pressure Switch (22) monitors the O2 supply pressure. When the O2 supply pressure is less than approximately 220 kPa, the ventilator gives an alarm indicating O2 supply failure. A5/A3™ Service Manual 046-001141-00 1 - 23...
  • Page 38 The Needle Valve (58) controls the gas flows. The ORC (25) controls the proportion between O2 and N2O, and ensures that the O2 concentration is not less than 25%. Turning the needle valve knob counterclockwise increases the flow; turning it clockwise decreases the flow. 1 - 24 046-001141-00 A5/A3™ Service Manual...
  • Page 39 (vaporizer) are outputted. The electronic flowmeter (26) measures and displays the flow of each gas. The total flow meter (50) displays the total gas flow. FIGURE 1-13 Flow Display Assembly 1.3.4.6 O2 Flush Button Assembly FIGURE 1-14 O2 Flush Button Assembly A5/A3™ Service Manual 046-001141-00 1 - 25...
  • Page 40 Either vaporizer manifold (27) is integrated with a check valve (28) that prevents flushed O2 and fresh gas from flowing back to the vaporizer. The Selectatec mounting with interlocking function prevents the user from turning on two vaporizers simultaneously. 1.3.4.8 CGO Assembly FIGURE 1-16 CGO Assembly 1 - 26 046-001141-00 A5/A3™ Service Manual...
  • Page 41 When no external device is connected, the high pressure O2 output is closed. The maximum flow is greater than 90L/min. FIGURE 1-17 High Pressure O2 Output Assembly (A5 only) A5/A3™ Service Manual 046-001141-00 1 - 27...
  • Page 42 The following picture shows the gas flow direction and the components of the anesthetic ventilator. FIGURE 1-18 Anesthetic Ventilator The following is the pneumatic circuit diagram of the anesthetic ventilator. FIGURE 1-19 Anesthetic Ventilator - Pneumatic Circuit Diagram 1 - 28 046-001141-00 A5/A3™ Service Manual...
  • Page 43 During expiration, the patient's expired gas goes into the bag inside the bellows. The CO2 Absorber Canister (32) absorbs CO2 that the patient expires. The following figure shows the pneumatic circuit of the breathing system. FIGURE 1-20 Breathing System Circuit Diagram A5/A3™ Service Manual 046-001141-00 1 - 29...

  • Page 44: Gas Flow

    When the Auto/Manual switch is placed in the Auto position, the A5/A3 starts its ventilator to mechanically assist or replace the spontaneous breathing of the patient. The ventilator controls the drive gas to depress the folding bag inside bellows (45) and supply gas for the breathing system according to the selected ventilation mode.
  • Page 45 AGSS disposal system. Waste gas goes from the exhaust port of the anesthesia machine through the AGSS transfer system and the AGSS receiving system to the hospital's waste gas disposal system (AGSS disposal system), as shown below. A5/A3™ Service Manual 046-001141-00 1 - 31...
  • Page 46 The receiving system is connected to the receiving hose through the 30 mm connector. The following picture shows the AGSS structure and the connections between the AGSS transfer system, receiving system, and disposal system. FIGURE 1-24 AGSS Transfer System 1 - 32 046-001141-00 A5/A3™ Service Manual...

  • Page 47: Anesthesia System Components

    Anesthesia System Components 1.4.1 Auxiliary Outlets The A3 anesthesia system has three 125V 15A Hospital Grade auxiliary outlets. Each outlet has one 250V 3A breaker. FIGURE 1-25 Auxiliary Outlet Diagram for the A3 The A5 anesthesia system has four 125V 15A Hospital Grade auxiliary outlets. Each outlet has one 250V 3A breaker.
  • Page 48 12V Power Supply of the Top Lighting Board Ground The 12V Power Supply of the 12V_AUX Flow Meter Lighting Board 1.4.2.2 Flow Meter Lighting Board FIGURE 1-29 Flow Meter Lighting Board, Top View 1 - 34 046-001141-00 A5/A3™ Service Manual...
  • Page 49 FIGURE 1-30 Flow Meter Lighting Board, Bottom View Flow Meter Lighting Board Interface, J1 NAME FUNCTION 12V Power Supply of the Flow Meter Lighting board Ground Ground LIGHT_IN Flow Meter Lighting Control Signal A5/A3™ Service Manual 046-001141-00 1 - 35...

  • Page 50: The Breathing System

    The Breathing System 1.5.1 Brief Introduction The A5/A3 Breathing System supports three types of operational modes: mechanical ventilation, manual ventilation, and standby. These modes allow the operator to apply proper ventilation strategy based on the patient’s needs. The types of flow paths through the breathing system vary with the operating mode or status.

  • Page 51: Automatic Mode, Expiration

    CO2 absorber canister, into the breathing circuit, and through the inspiratory check valve to the patient. During inspiration, fresh gas flows from the machine into the inspiratory limb, upstream of the inspiratory check valve. A5/A3™ Service Manual 046-001141-00 1 - 37...

  • Page 52: Manual Mode, Expiration

    During exhalation, fresh gas enters the Breathing System. Residual fresh gas passes through the APL valve to the AGSS. 1 - 38 046-001141-00 A5/A3™ Service Manual...

  • Page 53: Pneumatic Peep

    The ventilator's driving system is a flow generator. Driving gas fills the bellows dome to compress the bellows. The breathing gas is pressed out of the bellows into the patient breathing circuit. The bellows is refilled with fresh gas and the expired gas from the patient. A5/A3™ Service Manual 046-001141-00 1 - 39...
  • Page 54 Breathing System. 1.5.8.5 APL (Airway Pressure Limiting) Valve In manual mode, the APL Valve acts as a normal spring-loaded pressure relief valve, limiting the maximum pressure in the Breathing System. 1 - 40 046-001141-00 A5/A3™ Service Manual...

  • Page 55: Ventilator Ui

    FIGURE 1-35 Display Interface Board, Top View FIGURE 1-36 Display Interface Board, Bottom View Inverter interface, J1 NAME FUNCTION Inverter 12V Power Supply Inverter 12V Power Supply Ground Ground LCD_EN LCD Backlight Enable LCD_BR LCD Backlight Brightness Control A5/A3™ Service Manual 046-001141-00 1 - 41...
  • Page 56 Reserved RSVD Reserved RSVD Reserved RSVD Reserved 12V Power Supply 12V Power Supply Ground Ground Ground 1.6.1.2 Backlight Inverter Board NOTE: System will have a Backlight Inverter Board or a Screen Backlight Board. 1 - 42 046-001141-00 A5/A3™ Service Manual...
  • Page 57 High-Voltage Output of the Inverter Low_Voltage Low-Voltage Output of the Inverter 1.6.1.3 Screen Backlight Board NOTE: System will have a Backlight Inverter Board or a Screen Backlight Board. FIGURE 1-39 Screen Backlight Board, Top View A5/A3™ Service Manual 046-001141-00 1 - 43...
  • Page 58 FUNCTION Ground Screen Backlight Control PWM Signal LED_EN Screen Backlight Enable Signal 12V Power Supply 1.6.1.4 Warning Light Board FIGURE 1-41 Warning Light Board, Top View FIGURE 1-42 Warning Light Board, Bottom View 1 - 44 046-001141-00 A5/A3™ Service Manual...
  • Page 59 The anesthesia system display is a 15-inch, 24-bit, 1024x768 LVDS touch screen. Its LCD backlight brightness can be adjusted by the inverter. 1.6.1.6 Fresh Flow Sensor Board FIGURE 1-43 Fresh Flow Sensor Board, Top View FIGURE 1-44 Fresh Flow Sensor Board, Bottom View A5/A3™ Service Manual 046-001141-00 1 - 45...
  • Page 60 Fresh Flow Sensor Board Serial Port Transmit Signal RXD_FLOW_BRD Fresh Flow Sensor Board Serial Port Receive Signal Ground Fresh Flow Sensor Board 12V Power Supply 1.6.1.7 Indicator Light Board FIGURE 1-45 Indicator Light Board, Top View 1 - 46 046-001141-00 A5/A3™ Service Manual...
  • Page 61 Theory of Operation Ventilator UI FIGURE 1-46 Indicator Light Board, Bottom View Indicator Light Board interface, J1 NAME FUNCTION LED_AC AC Indicator Light Drive Signal LED_BAT Battery Indicator Light Drive Signal Ground A5/A3™ Service Manual 046-001141-00 1 - 47...

  • Page 62: Cpu Board

    Ventilator UI Theory of Operation 1.6.2 CPU Board FIGURE 1-47 CPU Board, Top View 1 - 48 046-001141-00 A5/A3™ Service Manual...
  • Page 63 Negative End of Receive Signal No Definition No Definition USB Interface, J8 NAME FUNCTION USB Power Supply USB Data Signal – (Negative) USB Data Signal + (Positive) Ground USB Power Supply USB Data Signal – (Negative) A5/A3™ Service Manual 046-001141-00 1 - 49...
  • Page 64 Theory of Operation NAME FUNCTION USB Data Signal + (Positive) Ground RS-232 Interface, J4 NAME FUNCTION No Connection RS-232 Receive Signal RS-232 Transmit Signal No Connection Ground No Connection No Connection No Connection No Connection 1 - 50 046-001141-00 A5/A3™ Service Manual...

  • Page 65: Ventilator Control And Drive

    Theory of Operation Ventilator Control and Drive Ventilator Control and Drive 1.7.1 Mother Board FIGURE 1-49 Mother Board, Top View FIGURE 1-50 Mother Board, Bottom View A5/A3™ Service Manual 046-001141-00 1 - 51...
  • Page 66 Calibration Serial Port Transmit Signal RXD_CALIBRATE Calibration Serial Port Receive Signal Ground 12V Power Supply Pneumatic Assembly Interface, J2 NAME FUNCTION 7Vout Pressure Relief Valve Power Supply SAFE_VALVE Pressure Relief Valve Drive Signal 1 - 52 046-001141-00 A5/A3™ Service Manual...
  • Page 67 Circuit Switch Ground NTC_R11 Signal of Thermistor 1 NTC_R12 Signal of Thermistor 2 NTC_R21 Signal of Thermistor 1 NTC_R22 Signal of Thermistor 2 HEA_PWR_15V Heater Drive Voltage Signal HEA_PWR_15V Heater Drive Voltage Signal Ground A5/A3™ Service Manual 046-001141-00 1 - 53...
  • Page 68 LVDS_DATA2+ LVDS Data Difference to Positive Signal 2 LVDS_DATA2- LVDS Data Difference to Negative Signal 2 Ground LVDS_DATA3+ LVDS Data Difference to Positive Signal 3 LVDS_DATA3- LVDS Data Difference to Negative Signal 3 1 - 54 046-001141-00 A5/A3™ Service Manual...
  • Page 69 TOUCHPAD_USB Difference to Positive Signal TOUCHPAD_USB- TOUCHPAD_USB Difference to Negative Signal 12V Power Supply Ground RSVD Reserved RSVD Reserved Calibration Interface, J5 NAME FUNCTION No Connection No Connection No Connection No Connection No Connection A5/A3™ Service Manual 046-001141-00 1 - 55...
  • Page 70 Power Board Serial Port (transmits signal) Power Board Cooling Fan Drive Ground LED-BAT Battery Status Indicator Light Drive Output LCD_EN Backlight Enable Signal LED-AC AC Status Indicator Light Drive Output LCD_BR Backlight Brightness Control Voltage 1 - 56 046-001141-00 A5/A3™ Service Manual...
  • Page 71 No Connection No Connection Ground Ground 12V Power Supply Output Ground 12V Power Supply Output 12V Power Supply Output No Connection 15V2 15.2V Supply Voltage Output No Connection 15V2 15.2V Supply Voltage Output A5/A3™ Service Manual 046-001141-00 1 - 57...
  • Page 72 CPU Board Interface Chip Power Supply Ground Ground Not Connected Not Connected Not Connected SPK_OUT+ Speaker Drive Signal + SPK_OUT- Speaker Drive Signal - Ground No Connection No Connection No Connection No Connection 1 - 58 046-001141-00 A5/A3™ Service Manual...
  • Page 73 Ventilator Control Board Serial Port Transmit Signal RXD_MON_BRD Ventilator Control Board Serial Port Receive Signal Ground TXD_AUX_BRD Auxiliary Ventilator Control Board Serial Port Transmit Signal RXD_AUX_BRD Auxiliary Ventilator Control Board Serial Port Receive Signal A5/A3™ Service Manual 046-001141-00 1 - 59...
  • Page 74 Power Board Serial Port Transmit High level 2.4~5; TXD_POWER Signal Low level 0~0.4 Power Board Serial Port Receive High level 2.4~5; RXD_POWER Signal Low level 0~0.4 5V Power Supply 4.75~5.25 3.3V 3.3V Power Supply 3.135~3.465 1 - 60 046-001141-00 A5/A3™ Service Manual...

  • Page 75: Ventilator Control And Drive Board

    The monitor subsystem is composed of four boards: monitor signal detection board, valve drive board, ventilator sensor interface board, and VPM (auxiliary ventilator control board). A5/A3™ Service Manual 046-001141-00 1 - 61...
  • Page 76 Ventilator Control and Drive Theory of Operation 1.7.2.1 Monitor Signal Detection Board FIGURE 1-51 Monitor Signal Detection Board, Top View 1 - 62 046-001141-00 A5/A3™ Service Manual...
  • Page 77 Pressure Relief Valve Control Signal 5V Power Supply Ventilator Sensor Interface, J3 NAME FUNCTION I2C Data Signal I2C Clock Signal Thermal Mass Flow Sensor Temperature Signal Thermal Mass Flow Sensor Flow Signal Sensor Power Supply Ground A5/A3™ Service Manual 046-001141-00 1 - 63...
  • Page 78 Test Point Definition DESIGNATOR NAME FUNCTION RANGE (unit: V) O2 Concentration Voltage 0~3.5 PEEP Pressure 0.2~4.5 Airway Pressure 0.2~4.5 Ventilator Flow Detection 0.21~5.25 Expiratory Flow Value 0.2~5.5 VAJF3 Offset Voltage 0.602~0.622 10V5 10.5V 10.25~10.75 1 - 64 046-001141-00 A5/A3™ Service Manual...
  • Page 79 0~12 SAN2 Signal of Three-way Valve 2 0~12 SAN3 Signal of Three-way Valve 3 0~12 SAN4 Signal of Three-way Valve 4 0~12 1.7.2.2 Valve Drive Board FIGURE 1-53 Valve Drive Board, Top View A5/A3™ Service Manual 046-001141-00 1 - 65...
  • Page 80 PEEP Valve Power Supply PEEP_VALVE PEEP Valve Control Signal Power Supply Interface, J2 NAME FUNCTION Ground Ground 12V Power Supply Status Monitor Detection Interface, J8 NAME FUNCTION Ground PNEUM_PRE_SW Circuit block pressure Switch Signal Ground Ground 1 - 66 046-001141-00 A5/A3™ Service Manual...
  • Page 81 Analog Channel Output Signal FLOW Inspiration Valve Control Signal PEEP PEEP Valve Control Signal 12V Input Signal 10~14 Valve Power Supply 6.65~7.35 SGND Ground 1.7.2.3 Sensor Interface Board FIGURE 1-55 Sensor Interface Board, Top View A5/A3™ Service Manual 046-001141-00 1 - 67...

  • Page 82: Battery

    Test Analog 5V Power Supply 1.7.3 Battery 1.7.3.1 Battery Power For A3 anesthesia system: Battery: 11.1V, 4.5Ah×1 Lithium-ion battery (sealed) Battery running time: 75 minutes (new battery) Battery charge time: 8 hours max from an initial charge of 10% 1 - 68 046-001141-00 A5/A3™...
  • Page 83 Battery In-position Signal BAT- Battery- Temperature Signal BAT- Battery- BAT- Battery- Battery Cable Interface, J3 NAME FUNCTION VBAT1 Battery Voltage NTC1 Battery Internal Thermistor Battery In-position Signal Ground VBAT2 Battery Voltage NTC2 Battery Internal Thermistor A5/A3™ Service Manual 046-001141-00 1 - 69...

  • Page 84: Infrared Communication Board

    Ventilator Control and Drive Theory of Operation NAME FUNCTION Battery In-position Signal Ground 1.7.4 Infrared Communication Board FIGURE 1-59 Infrared Communication Board, Top View FIGURE 1-60 Infrared Communication Board, Bottom View 1 - 70 046-001141-00 A5/A3™ Service Manual...

  • Page 85: Breathing System Heater

    Infrared Communication Board Serial Port Receive Signal Ground 1.7.5 Breathing System Heater The anesthesia system heater provides software and hardware dual-protection from overheating. The heater can switch over its operating mode automatically according to the change in ambient temperature. A5/A3™ Service Manual 046-001141-00 1 - 71...

  • Page 86: Ventilator Pneumatic- O2 Drive Gas

    1.8.4 Tube Color Coding All the pneumatic tubes used in the anesthesia system are color coded for use in the United States only. US STANDARD GREEN BLUE ORANGE 1 - 72 046-001141-00 A5/A3™ Service Manual...

  • Page 87: Installation Guide

    Breathing System Checks ................................. 2-43 Performance Verification................................... 2-44 Alarms and Fail safe Functions..............................2-49 Alarms and Fail safe Functions..............................2-49 Miscellaneous Tests....................................2-51 Vaporizer Interlock Test..................................2-51 Vaporizer Accuracy Test..................................2-52 Electrical Tests......................................2-53 A5/A3™ Service Manual 046-001141-00 2 - 1...

  • Page 88: Preparation - Additional Material Required

    Active O2, N2O, and AIR lines (280 to 600 kPa (40 to 87 psi)) • Dropdown hoses for ceiling-mounted medical gas utilities that are compatible with quick- disconnect hoses (if not purchased with the anesthesia system) 2 - 2 046-001141-00 A5/A3™ Service Manual...

  • Page 89: Assembly

    2.2.1 Unpacking and Setup 1. When the A5/A3 is delivered, IMMEDIATELY inspect the box for any damage. a. If there is NO damage and ALL tip indicators on the box exterior are intact, then sign and date the bill of lading or airway bill to indicate safe receipt of the anesthesia system.
  • Page 90 Assembly Installation Guide FIGURE 2-2 4. Pull the box straight up and over the unit. FIGURE 2-3 5. Remove the top foam piece on the A5/A3. 2 - 4 046-001141-00 A5/A3™ Service Manual...
  • Page 91 6. Cut the plastic tie wrap as shown below. Roll down the plastic bag from the unit. FIGURE 2-5 7. Using a pair of scissors, cut the plastic wrap from the A5/A3 near the back of the unit, using care to not scratch or otherwise damage the unit. Remove and discard the plastic wrap. Remove the empty box on the tray from the unit.
  • Page 92 8. Remove the foam covering up the display and the tray. FIGURE 2-7 9. After removing the plastic wrap and foam, check that there is a box on the side of the unit, as shown below. 2 - 6 046-001141-00 A5/A3™ Service Manual...
  • Page 93 10. At the base of the box platform, remove both sets of orange straps. FIGURE 2-9 11. Remove the piece of wood at the front of the A5/A3. Then, remove the foam packing material from around the front of the unit.
  • Page 94 The flat side of the wood should be facing up. The other side of the wood has support to hold up the ramp. Secure the ramp to the container using the hook-and-loop straps. 2 - 8 046-001141-00 A5/A3™ Service Manual...
  • Page 95 Check that there are green beads in the desiccant pack and that they have not turned pink. 14. Rotate the casters 90° and carefully roll the A5/A3 unit down the ramp. Remove the bag from the unit. Save the bag in case repacking is needed.
  • Page 96 19. Install the bellows dome by placing it down on the breathing system and turning it clockwise to lock it in place (the gradation markings on the bellows dome should face front and be visible to the operator). 2 - 10 046-001141-00 A5/A3™ Service Manual...
  • Page 97 FIGURE 2-17 21. Then, push the Bag Arm Assembly into the Breathing System and tighten the knurled collar as shown below. Install the Paw gauge and the water trap on the breathing system. A5/A3™ Service Manual 046-001141-00 2 - 11...
  • Page 98 Install the lower part first, line up the pins with the holes, and then align the top part. Push the top part in (upward) until both the front and back latches click into place. 2 - 12 046-001141-00 A5/A3™ Service Manual...
  • Page 99 25. Slide the Scavenger Assembly in the track on the lower left side (i.e., same side as the Breathing Assembly) of the A5/A3 and tighten the thumbscrew on the Scavenger Assembly to lock it in place. Install one side of the Scavenger Hose to the Scavenger Assembly and the other side of the Hose to the A5/A3 as shown below.
  • Page 100 • O2 Cable Assembly (PN: 115-006551-00) (Some unit may not include this assembly) • Gas Cylinder Wrench (PN: 041-004480-00) • Wired USB Mouse (PN: 0000-10-10751) (A3 only) • Drawer Keys(PN: 034-000353-00) • A Series Cleaning Quick Reference Card (PN: 046-009638-00)
  • Page 101 35. Connect the hose from the gas scavenger to the operating room's EVAC connector. At the AGSS tank, turn the knob on top of the scavenger until the float is between the Min and Max markings. A5/A3™ Service Manual 046-001141-00 2 - 15...
  • Page 102 43. Connect Hose (P/N: 801-0631-00078-00 or P/N: 115-008426-00) to the outlet of the gas module and to the Colder fitting at the back of the A5/A3. Place the unused hose in the bottom drawer. 44. Place the following parts into the bottom drawer: •...

  • Page 103: Breathing System And Breathing System Accessories And Checkout Procedures

    5. O2 sensor cable with sensor(A3s and A5s without AG module only) 2.2.2.1 Tank Wrench and Pre-operation 1. Mount the tank wrench on the rear of the A5/A3 so that it can be used to open or close each cylinder without disconnecting it from the machine. 2.2.3...
  • Page 104 Assembly Installation Guide WARNING: The A5/A3 Anesthesia System has a Selectatec mount system which will only allow vaporizers to be mounted that have an interlock system which prevents more than one vaporizer simultaneously being turned on. Do not attempt to override this safety feature.

  • Page 105: Monitoring Products Mounting And Electrical Connection (If Available)

    Use of other monitors and mounting hardware is the responsibility of the installer. 2. After mounting a monitor to the A5/A3, connect it to one of the AC outlets located on the rear of the A5/A3. 3. Turn on each monitor one at a time. Verify that the circuit breaker holds without tripping.

  • Page 106: Functional Tests

    Refer to Chapter 4.0 Calibration if any values are out of specification. NOTE: The A5/A3 system must be powered on (AC power, not battery) and the Breathing System Warmer set to ON (version 2.01.00 and higher) at least an hour before performing the Ventilation Tests described in “VCV Adult Ventilation Mode Test”...
  • Page 107 Both automatic ventilation and manual ventilation can still be applied Compliance test failed using the previous compliance value in the A5/A3 system memory, but may not meet the accuracy of the delivered volume. The following screen is displayed if the safety valve control test is failed. You can select Service Access and enter the required service password to access service mode.
  • Page 108 The following screen is displayed if the automatic circuit leak test is failed and the leak >1000 mL. You can select Override to enter Standby mode. But mechanical ventilation is disabled. You can select Retry to perform automatic circuit leak test again. 2 - 22 046-001141-00 A5/A3™ Service Manual...
  • Page 109 Standby mode.You can select Retry to perform automatic circuit leak test again. FIGURE 2-32 Compliance Test: Fail The following screen is displayed if the automatic circuit leak test is completed. Select Continue to enter Standby mode. A5/A3™ Service Manual 046-001141-00 2 - 23...
  • Page 110 To perform the breathing system leak test in manual ventilation mode: 1. You can access the manual circuit leak test screen after the automatic circuit leak test has passed. The manual circuit leak test screen is shown below. 2 - 24 046-001141-00 A5/A3™ Service Manual...
  • Page 111 3. The ongoing manual circuit leak test is as shown below. You can select Cancel to cancel the ongoing leak test. FIGURE 2-35 Manual Circuit Leak Test In Progress The following screen is displayed if the manual circuit leak test is failed. If so, you must perform the test again. A5/A3™ Service Manual 046-001141-00 2 - 25...
  • Page 112 If there is a leak, check the pneumatic circuit system for leakage and troubleshoot the problems as described in 5.3 Pneumatic Circuit System Problems. Repeat the leak test after the source of the failure has been resolved. 2 - 26 046-001141-00 A5/A3™ Service Manual...

  • Page 113: Display Setup Check

    Touch Continue to advance to the Standby screen display. For the A5, check that the screen displays the main screen, as shown in the figure below. NOTE: The GAS window will not appear on A5s without a gas module installed. FIGURE 2-38 Display Setup Check, A5 A5/A3™ Service Manual 046-001141-00 2 - 27...

  • Page 114: O2 Sensor Calibration(Only For A3'S And A5'S Without An Ag Module)

    Functional Tests Installation Guide For the A3, check that the screen displays the main menu, as shown in the figure below. FIGURE 2-39 Display Setup Check, A3 2.3.3 O2 Sensor Calibration(Only for A3's and A5's without an AG module) NOTE: Both a 21% and 100% O2 calibration MUST BE performed before first use of the A5/A3.
  • Page 115 FIGURE 2-41 O2 Sensor Calibration in Progress 3. The screen shown below is displayed if the ongoing calibration is canceled. Select Try Again to repeat the calibration. Select Done to exit the calibration screen. A5/A3™ Service Manual 046-001141-00 2 - 29...
  • Page 116 Select Try Again to repeat the calibration. Select Done to exit the calibration screen. FIGURE 2-43 O2 Sensor Calibration Failed 5. The screen shown below is displayed after a successful calibration. Select Done to exit the calibration screen. 2 - 30 046-001141-00 A5/A3™ Service Manual...
  • Page 117 The System and Service tabs require passwords and shows both 21% and 100% O2 Sensor calibration. The calibration screen shown below is displayed when 100% is selected. Set up the machine as per the instructions on the screen and select Next. A5/A3™ Service Manual 046-001141-00 2 - 31...
  • Page 118 4. The calibration screen shown below is displayed when Next is selected. Set up the machine as per the instructions on the screen. Wait 2 minutes to ensure that the O2 cell voltage has stabilized at the maximum value for at least 30s. Select Begin. 2 - 32 046-001141-00 A5/A3™ Service Manual...
  • Page 119 FIGURE 2-48 100% O2 Sensor Calibration in Progress 6. The screen shown below is displayed if the ongoing calibration is canceled. Select Try Again to repeat the calibration. Select Done to exit the calibration screen. A5/A3™ Service Manual 046-001141-00 2 - 33...
  • Page 120 Select Try Again to repeat the calibration. Select Done to exit the calibration screen. FIGURE 2-50 100% O2 Sensor Calibration Failed 8. The screen as shown below is displayed after a successful calibration. Select Done to exit the calibration screen. 2 - 34 046-001141-00 A5/A3™ Service Manual...
  • Page 121 O2 sensor is disconnected. correctly. 00 00 00 04 Sampled data is greater than . Check that the O2 sensor output voltage in the calibration 2900 (AD value). menu is steady. . Replace the O2 sensor. A5/A3™ Service Manual 046-001141-00 2 - 35...

  • Page 122: Calibrate The Ag Module(Only A5S With Gas Module)

    (a is the gas absolute concentration accuracy; c is the gas concentration). • T-shape connector • Tubing Follow this procedure to perform a calibration: 1. Connect the test system as follows. Tubing Open to the air Relief valve AG module 2 - 36 046-001141-00 A5/A3™ Service Manual...

  • Page 123: Gas Module Verification

    2. Turn on the N2O flow control and adjust N2O flow to maximum. 3. Adjust O2 flows according to the following table. 4. Verify that the corresponding N2O flows are according to the following table. A5/A3™ Service Manual 046-001141-00 2 - 37...
  • Page 124 2. Set the APL valve to the SP position. 3. Connect one end of the breathing circuit to the bag arm, one end to the inspiratory port and the Y-piece to the test port: 2 - 38 046-001141-00 A5/A3™ Service Manual...
  • Page 125 5. Press the FLUSH button until the pressure on the airway pressure gauge reaches 35 cmH2O. 6. Set the APL valve to SP. 7. Verify that the pressure does not drop below 30 cmH2O after 10 seconds. A5/A3™ Service Manual 046-001141-00 2 - 39...

  • Page 126: Pneumatic Leak Tests

    2.4.1 N2O Cylinder Leak Test 1. Remove the N2O line pressure hose from the line pressure inlet on the A5/A3. 2. Mount a full N2O cylinder to the rear panel yoke. If necessary, place a new clean tank washer between the cylinder and the yoke to minimize any leaks at the yoke connection.

  • Page 127: Line Pressure Leak Tests

    13. Remove the plug from the back pressure valve and reconnect hose #26. 14. Close the O2, AIR and N2O needle valves. 15. Reconnect the O2, AIR and N2O line pressure hoses and remove the pinch in the hose. A5/A3™ Service Manual 046-001141-00 2 - 41...

  • Page 128: Line Pressure Gauges Accuracy Test

    5 psi of each other. 13. Disconnect the N2O Pipeline supply and reconnect hose # 35 to the regulator assembly. 14. Reconnect the pipe supply for all 3 gases (O2, AIR and N2O). 2 - 42 046-001141-00 A5/A3™ Service Manual...

  • Page 129: Breathing System Checks

    2. Connect only the AIR line pressure hose to the anesthesia system from the wall supply. Leave all other line pressure hoses disconnected. 3. With the A5/A3 powered ON, rotate the AIR flow control knob to ensure a continuous flow increase throughout its full range.

  • Page 130: Performance Verification

    10. Verify that an airway pressure waveform and all numeric values appear on screen during bag compressions. 11. Stop squeezing the breathing bag and set the APL Valve to the open position (SP). 2 - 44 046-001141-00 A5/A3™ Service Manual...

  • Page 131: Apnea Alarm Test

    1. Set the O2 flow to 10 L/min and set the N2O and Air flow rates to 0 flow. 2. Set the mechanical Auto/Manual switch to AUTO. 3. Set the ventilator controls to: A5/A3™ Service Manual 046-001141-00 2 - 45...

  • Page 132: Vcv Child Ventilation Mode Test

    5. Verify the delivered volume as measured by a Vent Tester at the expiratory port, is within 15ml of the set value within approximately 1 minute from the start of ventilation. 2 - 46 046-001141-00 A5/A3™ Service Manual...

  • Page 133: Airway Disconnect Alarm Test

    5. Verify that the pressure waveform, Tidal Volume, Resp. Rate and minute volume values appear on the screen. 6. Verify that the PEAK Value measured with the Vent Tester reaches 15 ±2.5 cmH2O within five breaths from the start of ventilation. A5/A3™ Service Manual 046-001141-00 2 - 47...

  • Page 134: Pressure Support (Ps) Ventilation Mode Test

    P + PEEP. 7. Stop triggering breaths. 8. Verify that after 15 seconds the ventilator delivers a breath and displays the message Apnea Ventilation. 9. Verify the system ventilates with a frequency of 4 bpm. 2 - 48 046-001141-00 A5/A3™ Service Manual...

  • Page 135: Alarms And Fail Safe Functions

    • FiO2 Too High message appears on the screen. • An alarm tone sounds. 5. Set the high FiO2 alarm limit to the max setting. 6. Verify the FiO2 Too High message disappears. A5/A3™ Service Manual 046-001141-00 2 - 49...

  • Page 136: Peak Pressure Alarms Test

    8. Verify that the MV Too High message disappears. 9. Set the mechanical Auto/Manual switch to MANUAL. 10. Set all fresh gas flows to 0. 11. Press “discharge” to enter the standby mode. 2 - 50 046-001141-00 A5/A3™ Service Manual...

  • Page 137: Miscellaneous Tests

    Touchpad /USB Mouse Test For A5 units: Verify that the touchpad is functional. For A3 units: Verify that the USB mouse can be used to operate the unit. Vaporizer Interlock Test 1. Attach two vaporizers to the Vaporizer Mounting Manifold and lock them in place.

  • Page 138: Vaporizer Accuracy Test

    When testing the Vaporizers using the Riken F-211 gas analyzer, the altitude can be ignored as the deviations cancel each other out. If using a different gas analyzer, check the effect of change of barometric pressure before using in high elevations. 2 - 52 046-001141-00 A5/A3™ Service Manual...

  • Page 139: Electrical Tests

    While for the last two tests, verify that the maximum leakage current does not exceed 1000 μA (1 mA). NOTE: Make sure the safety analyzer is authorized by certificate organizations (UL, CSA, or AAMI etc.). Follow the instructions of the analyzer manufacturer. A5/A3™ Service Manual 046-001141-00 2 - 53...

  • Page 140: Electrical Safety Inspection Form

    When neither power supply PCBA, transformer nor patient electrically-connected PCBA is repaired or Test items: 1, 2 replaced When power supply PCBA or transformer is Test items: 1, 2, 3 repaired or replaced TABLE 2-2 2 - 54 046-001141-00 A5/A3™ Service Manual...

  • Page 141: Periodic Maintenance

    Battery Maintenance and Replacement.............................3-8 Functional Tests......................................3-9 Pneumatic Leak Tests..................................3-31 Breathing System Checks ................................. 3-34 Performance Verification................................... 3-36 Alarms and Fail safe Functions..............................3-40 Vaporizer Interlock Test..................................3-42 Vaporizer Accuracy Test..................................3-43 Electrical Tests......................................3-44 A5/A3™ Service Manual 046-001141-00 3 - 1...

  • Page 142: Maintenance Schedule

    Periodic Maintenance Maintenance Schedule The following is a list of activities required for periodic maintenance of the A5/A3 Anesthesia System. Physical inspection, replacement of consumables, and performance checks should be periodically performed per the schedule listed below. The manufacturer is not responsible for component failure or loss resulting from the use of stated consumables beyond their recommended replacement interval.

  • Page 143: Checklist Before Surgery

    1. Check if the measurement made by the AG module is After each Check the normal. service or at AG module 2. Check the effectiveness of AG module calibration the time of return accuracy result. visit A5/A3™ Service Manual 046-001141-00 3 - 3...

  • Page 144: Visual Inspection Checklist

    The following table lists the parts to be checked or replaced periodically inside the consumable parts kits. The replacement date starts from the date when the machine is assembled. The filter (part number:082-000423-00) is not needed for FDA A3/A5. Consumable Part...
  • Page 145 ***The 6 O-Rings are for the 3 vaporizer option. Units with the 2 Vaporizer mount will only require 4 of the 6 O- Rings. NOTE: To be compatible with additional models, the kit contains additional parts not required on the A3 / A5 anesthesia systems. The locations of the O-rings / Gaskets are shown in FIGURE 3-1. A5/A3™ Service Manual 046-001141-00...
  • Page 146 List of Periodic Maintenance Parts to be Replaced and Checked Periodic Maintenance FIGURE 3-1 Locations of the O-rings / gaskets FIGURE 3-2 Breathing System 3 - 6 046-001141-00 A5/A3™ Service Manual...
  • Page 147 Periodic Maintenance List of Periodic Maintenance Parts to be Replaced and Checked FIGURE 3-3 Breathing System Adapter FIGURE 3-4 CO2 Bypass Shaft and CO2 Absorber Assembly A5/A3™ Service Manual 046-001141-00 3 - 7...

  • Page 148: Battery Maintenance And Replacement

    2. Open the battery box of the anesthesia system. 3. Remove the old battery. 4. Install the new battery. 5. Close the battery box. 6. Close the rear cover. 7. Use only Mindray approved batteries (P/N 115-018012-00). 3 - 8 046-001141-00 A5/A3™ Service Manual...

  • Page 149: Functional Tests

    Refer to Chapter 4.0 Calibration if any values are out of specification. NOTE: The A5/A3 system must be powered on (AC power, not battery) and the Breathing System Warmer set to ON (version 2.01.00 and higher) at least an hour before performing the Ventilation Tests described in “VCV Adult Ventilation Mode Test”...
  • Page 150 Both automatic ventilation and manual ventilation can still be Compliance test failed applied using the previous compliance value in the A5/A3 system memory, but may not meet the accuracy of the delivered volume. The following screen is displayed if the safety valve control test is failed. You can select Service Access and enter the required service password to access service mode.
  • Page 151 The following screen is displayed if the automatic circuit leak test is failed and the leak >1000 mL. You can select Override to enter Standby mode. But mechanical ventilation is disabled. You can select Retry to perform automatic circuit leak test again. A5/A3™ Service Manual 046-001141-00 3 - 11...
  • Page 152 Standby mode.You can select Retry to perform automatic circuit leak test again. FIGURE 3-11 Compliance Test: Fail The following screen is displayed if the automatic circuit leak test is completed. Select Continue to enter Standby mode. FIGURE 3-12 Automatic Circuit Leak Test Completed 3 - 12 046-001141-00 A5/A3™ Service Manual...
  • Page 153 2. Set up the machine as per the instructions on the screen. Then, select Continue to execute manual circuit leak test. 3. The ongoing manual circuit leak test is as shown below. You can select Cancel to cancel the ongoing leak test. A5/A3™ Service Manual 046-001141-00 3 - 13...
  • Page 154 The following screen is displayed if the manual circuit leak test is failed. If so, you must perform the test again. FIGURE 3-15 Manual Circuit Leak Test: Fail The following screen is displayed if the manual circuit leak test is completed. Select Continue to enter automatic circuit leak test. 3 - 14 046-001141-00 A5/A3™ Service Manual...
  • Page 155 30 cmH2O. plug. the pneumatic circuit. 3. The bellows housing is not properly installed. A5/A3™ Service Manual 046-001141-00 3 - 15...

  • Page 156: Check The Ag Module Accuracy

    (allow the gas to flow for sixty seconds before taking the reading.) N2O within 3%,CO2 = within 0.3%,O2 = within 2%,Desflurane within 0.2%. 10. Select Accept to close the Setup window. 3 - 16 046-001141-00 A5/A3™ Service Manual...

  • Page 157: Gas Module Verification

    4.0 L/min ≤ 12.7 L/min 5.0 L/min ≤ 15.8 L/min 6.0 L/min ≤ 19.0 L/min 0 L/min 0 L/min 5. Lower the N2O flow to minimum. 6. Lower the O2 flow to minimum. A5/A3™ Service Manual 046-001141-00 3 - 17...

  • Page 158: Check The Sensor Zero Point

    1. Turn off all fresh gases and expose the breathing system to ambient pressure. 2. Make sure that the system is in Standby mode. 3. Select Setup-> Service-> Data Monitors-> Component-> Zero Sensor to access the following menu. 3 - 18 046-001141-00 A5/A3™ Service Manual...

  • Page 159: Check The Flow Sensor Accuracy

    4. The second column is the current reading of the sensors and the third column is the zero that is saved in the EEPROM. The following table lists the normal range of the zero point of the A5/A3 pressure and flow sensors. Sensor Name...
  • Page 160 Setup the calibration device as described below: b. Flow Setting: Press the Flow button on the front control panel of the calibration. You can set Range to High Flow or Low Flow as required. 3 - 20 046-001141-00 A5/A3™ Service Manual...
  • Page 161 Gas Settings: Press the Setup button, select Setting->ENTER->Gas Settings->MODIFY->Gas Type->O2. d. Correction mode: Press the Setup button, select Setting->ENTER->Correction Mode- >MODIFY->Correction Mode->ATP. FIGURE 3-21 Calibration Front Control Panel - Gas Settings e. Select BACK->BACK-> BACK. A5/A3™ Service Manual 046-001141-00 3 - 21...
  • Page 162 Gas Settings: Press the GAS SELECT key until the bottom left corner reads O2. 6. When the system is in Standby, select the Setup-> Service-> Diagnostic Tests->Valves to access the following menu. 3 - 22 046-001141-00 A5/A3™ Service Manual...

  • Page 163: Check The Pressure Sensor Accuracy

    You can use any pressure meter that has an accuracy of at least ±2% for the accuracy measurement of the pressure sensors. To check the measurement accuracy of pressure sensors: 1. Perform pneumatic connections as follows: The following pictures show the four-way device: A5/A3™ Service Manual 046-001141-00 3 - 23...
  • Page 164 3. Connect the four way tube to the pressure sensor P1 of monitor board, pressure sensor P2 of PEEP, the tube marked as #72, and the low pressure port of Fluke VT-Plus. The tube marked as #9 will remain unconnected for this calibration. FIGURE 3-26 Pneumatic Connections to Monitor Board 3 - 24 046-001141-00 A5/A3™ Service Manual...
  • Page 165 2. Set up the calibration device as described below. To set the Fluke VT-Plus: a. Pressure Setting: Press the PRESSURE button on the front control panel of the calibration, select Range and then set it to Low Press. A5/A3™ Service Manual 046-001141-00 3 - 25...
  • Page 166 FIGURE 3-29 Calibration Front Control Panel - Pressure Button b. Gas Settings: Press the Setup button, select Setting->ENTER->Gas Settings->MODIFY->Gas Type->O2. FIGURE 3-30 Calibration Front Control Panel - Gas Settings c. Select BACK->BACK-> BACK. 3 - 26 046-001141-00 A5/A3™ Service Manual...
  • Page 167 1 cmH2O or 2% of the measured value of the calibration device, whichever is greater. Otherwise, refer to Section 4.3.4 Pressure Calibration (Service) to perform pressure calibration again. A5/A3™ Service Manual 046-001141-00 3 - 27...

  • Page 168: Check The Electronic Flowmeter Accuracy

    Flow Settings: Press the Flow button on the front control panel of the calibration. You need set Range to Low Flow (when Gas Type is N2O bal O2, you need set Range to High Flow). 3 - 28 046-001141-00 A5/A3™ Service Manual...
  • Page 169 Gas Settings: Press the Setup button, select Setting->ENTER->Gas Settings->MODIFY->Gas Type->O2 or Air or N2O bal O2. c. Correction mode: Press the Setup button, select Setting->ENTER->Correction Mode- >MODIFY->Correction Mode->STPD21. FIGURE 3-35 Gas Settings d. Select BACK->BACK-> BACK. FIGURE 3-36 Settings A5/A3™ Service Manual 046-001141-00 3 - 29...
  • Page 170 9. AIR flowmeter test. Adjust the AIR flowmeter to 0.5L/min, 1L/min, L/min, 6L/min, 10L/min and 15L/min in turn. Make sure that the measured flow is within 10% of the set value or 0.12 L/min, whichever is greater. 10. Re-install the breathing circuit module. 3 - 30 046-001141-00 A5/A3™ Service Manual...

  • Page 171: Pneumatic Leak Tests

    3.9.1 N2O Cylinder Leak Test 1. Remove the N2O line pressure hose from the line pressure inlet on the A5/A3. 2. Mount a full N2O cylinder to the rear panel yoke. If necessary, place a new clean tank washer between the cylinder and the yoke to minimize any leaks at the yoke connection.

  • Page 172: Line Pressure Leak Tests

    13. Remove the plug from the back pressure valve and reconnect hose #26. 14. Close the O2, AIR and N2O needle valves. 15. Reconnect the O2, AIR and N2O line pressure hoses and remove the pinch in the hose. 3 - 32 046-001141-00 A5/A3™ Service Manual...

  • Page 173: Line Pressure Gauges Accuracy Test

    5 psi of each other. 13. Disconnect the N2O Pipeline supply and reconnect hose # 35 to the regulator assembly. 14. Reconnect the pipe supply for all 3 gases (O2, AIR and N2O). A5/A3™ Service Manual 046-001141-00 3 - 33...

  • Page 174: Breathing System Checks

    Internal Gas Connections Test 1. Close and remove all gas cylinders from the A5/A3. 2. Connect only the AIR line pressure hose to the A5/A3 from the wall supply. Leave all other line pressure hoses disconnected. 3. With the A5/A3 powered ON, rotate the AIR flow control knob to ensure a continuous flow increase throughout its full range 4.

  • Page 175: Drive Gas Pressure Loss Alarm, N2O Cutoff Test

    3. Set the AIR flow to 2 L/min using the flow control valve. 4. Interrupt the O2 supply to the A5/A3. 5. Verify that the flow of N2O and O2 stops within 2 minutes and that the flow of AIR (if available) continues to flow at 2 L/min.

  • Page 176: Performance Verification

    1. While in the Manual Ventilation Mode, stop ventilating the test lung. 2. Verify that the following APNEA alarm signals activate at approximately 30 seconds from the last bag compression. • APNEA appears on the screen. • An alarm tone sounds. 3 - 36 046-001141-00 A5/A3™ Service Manual...

  • Page 177: Alarm Silence Test

    10. Set the AIR flow to 3 L/min and set the N2O and O2 flow rates to minimum flow. 11. Verify the measured O2 concentration is 21% ±3% vol. % after 5 minutes. A5/A3™ Service Manual 046-001141-00 3 - 37...

  • Page 178: Vcv Child Ventilation Mode Test

    1. While the ventilator is running, disconnect the expiratory limb from the Expiratory Port on the Breathing System. 2. Verify the following airway pressure disconnect alarm signals activate: • Paw Too Low message appears on the screen. • An alarm tone sounds. 3 - 38 046-001141-00 A5/A3™ Service Manual...

  • Page 179: Pcv Adult Ventilation Mode Test

    6. Verify that the Peak Pressure reading on the display is ±2 the value of ΔP + PEEP. 7. Stop triggering breaths. 8. Verify that after 15 seconds the ventilator delivers a breath and displays the message Apnea Ventilation. 9. Verify the system ventilates with a frequency of 4 bpm. A5/A3™ Service Manual 046-001141-00 3 - 39...

  • Page 180: Alarms And Fail Safe Functions

    • FiO2 Too High message appears on the screen. • An alarm tone sounds. 5. Set the high FiO2 alarm limit to the max setting. 6. Verify the FiO2 Too High message disappears. 3 - 40 046-001141-00 A5/A3™ Service Manual...

  • Page 181: Peak Pressure Alarms Test

    8. Verify that the MV Too High message disappears 9. Set the mechanical Auto/Manual switch to MANUAL. 10. Set all fresh gas flows to 0. 11. Press “discharge” to enter the standby mode. A5/A3™ Service Manual 046-001141-00 3 - 41...

  • Page 182: Miscellaneous Tests

    3.13.3 Touchpad /USB Mouse Test For A5 units: Verify that the touchpad is functional. For A3 units: Verify that the USB mouse can be used to operate the unit. 3.14 Vaporizer Interlock Test 1. Attach two vaporizers to the Vaporizer Mounting Manifold and lock them in place.

  • Page 183: Vaporizer Accuracy Test

    If using a different gas analyzer, check the effect of change of barometric pressure prior to use when working in high elevations. A5/A3™ Service Manual 046-001141-00 3 - 43...

  • Page 184: Electrical Tests

    While for the last two tests, verify that the maximum leakage current does not exceed 1000 μA (1 mA). NOTE: Make sure the safety analyzer is authorized by certificate organizations (UL, CSA, or AAMI etc.). Follow the instructions of the analyzer manufacturer. 3 - 44 046-001141-00 A5/A3™ Service Manual...

  • Page 185: Electrical Safety Inspection Form

    When neither power supply PCBA, transformer nor patient electrically-connected PCBA is repaired or Test items: 1, 2 replaced When power supply PCBA or transformer is Test items: 1, 2, 3 repaired or replaced TABLE 3-2 A5/A3™ Service Manual 046-001141-00 3 - 45...
  • Page 186 Electrical Tests Periodic Maintenance This page intentionally left blank. 3 - 46 046-001141-00 A5/A3™ Service Manual...

  • Page 187: Calibration

    Calibration Introduction .........................................4-2 Calibration Warnings, Precautions, and Notes........................4-3 System Calibration ....................................4-5 A5/A3™ Service Manual 046-001141-00 4 - 1...

  • Page 188: Introduction

    Calibration Introduction This section provides detailed information required to properly test and calibrate the A5/A3 anesthesia system. Calibration consists of making mechanical and electrical adjustments with the proper test equipment. The instrument should be tested and calibrated after repairs have been completed or at regular intervals as part of a periodic maintenance procedure.

  • Page 189: Calibration Warnings, Precautions, And Notes

    This machine must only be operated by trained, skilled medical staff. 4.2.3 Notes NOTE: Only bacterial filters with a low flow resistance must be connected to the patient module and/or the patient connection. A5/A3™ Service Manual 046-001141-00 4 - 3...
  • Page 190 To accommodate additional monitors and other equipment the anesthesia offers up to two vertical mounting tracks. Use of unauthorized mounting accessories is not recommended. NOTE: Always secure any equipment placed on the top shelf of anesthesia 4 - 4 046-001141-00 A5/A3™ Service Manual...

  • Page 191: System Calibration

    2 cmH2O, whichever is greater. Calibrate the deviation from Pressure and flow zero point of the ventilator Flow or Paw waveforms deviates from the zeroing (Service) control board and auxiliary baseline. ventilator control board. A5/A3™ Service Manual 046-001141-00 4 - 5...

  • Page 192: O2 Sensor Calibration

    If not, confirm that the O2 measure switch is turned on, check the O2 sensor connection line, or replace the O2 sensor until measure numerics are displayed. NOTE: Perform O2 sensor calibration only for units with galvanic O2 cell. 4 - 6 046-001141-00 A5/A3™ Service Manual...
  • Page 193 21% and 100% O2 Sensor calibration. Set up the machine as per the instructions on the screen. Select Begin to start calibration. FIGURE 4-1 2. The calibration screen shown below is displayed when Begin is selected. During the calibration, you can select Cancel to cancel the calibration. A5/A3™ Service Manual 046-001141-00 4 - 7...
  • Page 194 Done to exit the calibration screen. FIGURE 4-3 4. The screen shown below is displayed if the calibration has failed. Select Try Again to do the calibration again.Select Done to exit the calibration screen. 4 - 8 046-001141-00 A5/A3™ Service Manual...
  • Page 195 Calibration System Calibration 5. The screen shown below is displayed after a successful calibration . Select Done to exit the calibration screen. FIGURE 4-4 A5/A3™ Service Manual 046-001141-00 4 - 9...
  • Page 196 Next. In case of manual mode, make sure that the manual bag is in position. Otherwise, set the switch to Auto position. . 3. Select Next and the calibration screen as shown below is displayed. Set up the machine as per the instructions on the screen. 4 - 10 046-001141-00 A5/A3™ Service Manual...
  • Page 197 30s. Select Begin. FIGURE 4-6 5. The calibration screen shown below is displayed when Begin is selected. During the calibration, you can select Cancel to cancel the calibration. A5/A3™ Service Manual 046-001141-00 4 - 11...
  • Page 198 7. The screen shown below is displayed if the calibration has failed. Select Try Again to do the calibration again.Select Done to exit the calibration screen. Version 02.01.00 and higher – A Fail code (e.g., AA BB CC DD) is displayed if 100% O2 Calibration has failed. 4 - 12 046-001141-00 A5/A3™ Service Manual...
  • Page 199 Calibration System Calibration FIGURE 4-9 8. The screen shown below is displayed after a successful calibration. Select Done to exit the calibration screen. FIGURE 4-10 A5/A3™ Service Manual 046-001141-00 4 - 13...
  • Page 200 (800~2028) (AD value). menu is steady. . Replace the O2 sensor. . Repeat the calibration. 00 00 00 20 Error writing to EEPROM. . Replace the O2 sensor. . Replace the CPU board. 4 - 14 046-001141-00 A5/A3™ Service Manual...

  • Page 201: Flow Calibration (User)

    When great deviations (more than 9% compared with the setting value) occur to tidal volume measurement due to sensor ageing or environmental factors or the user replaces flow sensors, you need to re-calibrate flow sensors. A5/A3™ Service Manual 046-001141-00 4 - 15...
  • Page 202 3. Set up the machine as per the instructions on the screen and select Next to open the menu shown below. FIGURE 4-12 4. Select Begin to calibrate flow sensors. During the calibration, you can select Cancel to cancel the calibration. 4 - 16 046-001141-00 A5/A3™ Service Manual...
  • Page 203 Select Done to exit the calibration screen. FIGURE 4-14 6. The screen shown below is displayed if the flow sensor calibration is failed. Select Try Again to do the calibration again. Select Done to exit the calibration screen. A5/A3™ Service Manual 046-001141-00 4 - 17...

  • Page 204: Flow Calibration (Service)

    NOTE: When a great deviation is detected between the measured value of the built-in flow sensor and that of the standard flow measurement device, you need to perform Flow Calibration (Service). 4 - 18 046-001141-00 A5/A3™ Service Manual...
  • Page 205 Manual calibration is available in version 1.03.00 and higher. 4.3.3.2 Auto Calibration Follow these steps to calibrate flow sensors. 1. Enter Standby. 2. Select Setup-> Service-> Calibration-> Flow Sensors to access the screen as shown. A5/A3™ Service Manual 046-001141-00 4 - 19...
  • Page 206 3. Select Calibrate Automatically button to open the menu shown below. Then select the desired calibration device. FIGURE 4-18 4. Connect the calibration device with the anesthesia machine using a communication cable (P/N: 801-0631-00121-00). 4 - 20 046-001141-00 A5/A3™ Service Manual...
  • Page 207 FIGURE 4-20 Cable connections at the calibration device (VT Plus) end 5. Set up the calibration device as described below. To set the VT-Plus: a. Gas Settings: Press the Setup button, select Setting->ENTER->Gas Settings->MODIFY->Gas Type->O2->BACK->BACK. A5/A3™ Service Manual 046-001141-00 4 - 21...
  • Page 208 FIGURE 4-22 c. Serial Mode Settings: Press the Setup button, select Setting->System->Enter->Serial Mode - >OTIS Ctrl->BACK->BACK. FIGURE 4-23 d. After setting up the calibration device, the calibration enters the serial mode screen shown below. 4 - 22 046-001141-00 A5/A3™ Service Manual...
  • Page 209 FIGURE 4-24 6. Press the Next button to open the menu shown below. FIGURE 4-25 7. Connect the inspiration port and expiration port of the anesthesia machine following the on- screen instructions, shown below. A5/A3™ Service Manual 046-001141-00 4 - 23...
  • Page 210 System Calibration Calibration FIGURE 4-26 8. Press the Begin button to open the menu shown below. FIGURE 4-27 9. The menu shown below is displayed after the above steps are completed. 4 - 24 046-001141-00 A5/A3™ Service Manual...
  • Page 211 Connect the low flow channel of the calibration device first, shown below. FIGURE 4-29 Pneumatic connection with the calibration device (VT Plus) 11. Press the Continue button to open the menu shown below. A5/A3™ Service Manual 046-001141-00 4 - 25...
  • Page 212 12. The menu shown below is displayed after the low flow channel calibration is completed. FIGURE 4-31 13. Connect the high flow channel of the calibration device following the on-screen instructions shown below. 4 - 26 046-001141-00 A5/A3™ Service Manual...
  • Page 213 Select Try Again to do the calibration again. Select Done to exit the calibration screen. A5/A3™ Service Manual 046-001141-00 4 - 27...
  • Page 214 FIGURE 4-35 16. The screen shown below is displayed if the ongoing calibration is canceled. Select Try Again to do the calibration again. Select Done to exit the calibration screen. 4 - 28 046-001141-00 A5/A3™ Service Manual...
  • Page 215 Calibration System Calibration FIGURE 4-36 A5/A3™ Service Manual 046-001141-00 4 - 29...
  • Page 216 Follow these steps to calibrate the flow sensors. 1. Enter Standby. 2. Select Setup-> Service-> Calibration-> Flow Sensors to access the screen as shown. FIGURE 4-37 3. Select Calibrate Manually button to open the menu shown below. 4 - 30 046-001141-00 A5/A3™ Service Manual...
  • Page 217 4. Connect the inspiration port and expiration port of the anesthesia machine following the on- screen instruction as shown below. FIGURE 4-39 5. Press the Begin button to open the menu shown below. A5/A3™ Service Manual 046-001141-00 4 - 31...
  • Page 218 Flow Setting: Press the to line select key until the top display reads LPM or SLPM. If the display reads SLPM, press the DISPLAY UNITS key until the top display reads LPM. b. Gas Settings: Press the GAS SELECT key until the bottom left corner reads O2. 4 - 32 046-001141-00 A5/A3™ Service Manual...
  • Page 219 During the calibration, you can select to re-calibrate any calibration point. After having inputted the standard flow values of all the 32 calibration points, select Accept to check and save the calibration data. A5/A3™ Service Manual 046-001141-00 4 - 33...
  • Page 220 11.Press the Accept button and the screen shown below is displayed. • The screen shown below is displayed after a successful flow sensor calibration. FIGURE 4-45 • The screen shown below is displayed if the flow sensor calibration has failed. 4 - 34 046-001141-00 A5/A3™ Service Manual...
  • Page 221 After flow calibration, check the accuracy of flow sensors by referring to Section 3.8.6 Check the Flow Sensor Accuracy. NOTE: In case of calibration failure, first fix the problem and then perform flow calibration again. A5/A3™ Service Manual 046-001141-00 4 - 35...
  • Page 222 1. Check if the operations are [00 00 00 04] is The Auto/Manual switch is on Manual performed as directed. displayed. position. 2. If so, check the Auto/Manual switch. 4 - 36 046-001141-00 A5/A3™ Service Manual...
  • Page 223 2000, or is less than 0) gas supply (the change is not more than 1% of the reading), indicating that the then valve is indeed fully closed. 3. Replace the board. A5/A3™ Service Manual 046-001141-00 4 - 37...
  • Page 224 (less than 90) 90 L/min is greater than 3900, the measurement range of expiratory flow sensor has an error. In this case, replace the expiratory flow sensor. 3. Replace the board. 4 - 38 046-001141-00 A5/A3™ Service Manual...
  • Page 225 [00 00 10 00] is Resolution error occurs to the inspiratory calibration device. displayed. flow sensor. 4. See section 5.4 (pg. 5-67) "Sensors and Valves Problems". 5. Replace the inspiratory flow sensor. 6. Replace the board. A5/A3™ Service Manual 046-001141-00 4 - 39...
  • Page 226 The system fails to write EEPROM. displayed. 2. Replace the monitoring board. 1. Check if ACGO is positioned to [00 10 00 00] is "OFF". ACGO switch is on "ON" position. displayed. 2. Check the ACGO identification switch. 4 - 40 046-001141-00 A5/A3™ Service Manual...

  • Page 227: Pressure Calibration (Service)

    This calibration is intended for the airway pressure sensor in the breathing circuit, PEEP pressure sensor and the PEEP valve of the expiratory valve assembly. The standard pressure measurement device is used to calibrate the pressure sensors and the PEEP valve. A5/A3™ Service Manual 046-001141-00 4 - 41...
  • Page 228 1. Make sure that the anesthesia machine is in standby mode. 2. Select Setup-> Service-> Calibration-> Pressure Sensors to access the screen shown below. FIGURE 4-48 3. Select Calibrate Automatically button to open the menu shown below. 4 - 42 046-001141-00 A5/A3™ Service Manual...
  • Page 229 A four-way device is required to connect the sampling lines for pressure calibration. The following pictures show the four-way device, connectors on the calibration device and ventilator control board involved for pressure calibration. A5/A3™ Service Manual 046-001141-00 4 - 43...
  • Page 230 Connect the four way tube to the pressure sensor P1 of monitor board, pressure sensor P2 of PEEP, the tube marked as #72, and the low pressure port of Fluke VT-Plus. The tube marked as #9 will remain unconnected for this calibration. FIGURE 4-51 4 - 44 046-001141-00 A5/A3™ Service Manual...
  • Page 231 8. Press the Next button to open the menu shown below. FIGURE 4-53 9. After selecting the desired auto calibration device, select Begin to access the calibration screen shown below. During the calibration, you can select Cancel to stop the calibration. A5/A3™ Service Manual 046-001141-00 4 - 45...
  • Page 232 Again to do the calibration again.Select Done to exit the calibration screen. FIGURE 4-55 • The screen shown below is displayed after a successful pressure sensor calibration. Select Done to exit the calibration screen. 4 - 46 046-001141-00 A5/A3™ Service Manual...
  • Page 233 Follow these steps to calibrate pressure sensors and the PEEP valve. 1. Make sure that the anesthesia machine is in standby mode. 2. Select Setup-> Service-> Calibration-> Pressure Sensors to access the screen shown below. A5/A3™ Service Manual 046-001141-00 4 - 47...
  • Page 234 System Calibration Calibration FIGURE 4-58 3. Select Calibrate Manually button to open the menu shown below. 4 - 48 046-001141-00 A5/A3™ Service Manual...
  • Page 235 3. Connect the four way tube to the pressure sensor P1 of monitor board, pressure sensor P2 of PEEP, the tube marked as #72, and the low pressure port of Fluke VT-Plus. The tube marked as #9 will remain unconnected for this calibration. A5/A3™ Service Manual 046-001141-00 4 - 49...
  • Page 236 System Calibration Calibration FIGURE 4-61 FIGURE 4-62 Calibration Device (TSI Certifier 4070) 5. Press the Begin button to open the menu shown below. 4 - 50 046-001141-00 A5/A3™ Service Manual...
  • Page 237 When Input Cal Value is displayed in the cell, input the standard pressure value displayed by the calibration device. After having inputted the standard pressure values of all the 32 calibration points, select Accept to check and save the calibration data. A5/A3™ Service Manual 046-001141-00 4 - 51...
  • Page 238 8. Press the Accept button and the screen shown below is displayed. • The screen shown below is displayed after a successful pressure sensor calibration. FIGURE 4-66 • The screen shown below is displayed if the pressure sensor calibration has failed. 4 - 52 046-001141-00 A5/A3™ Service Manual...
  • Page 239 After pressure calibration, test the accuracy of pressure sensors by referring to 3.7.5 Check the Pressure Sensor Accuracy. NOTE: In case of calibration failure, first fix the problem and then perform pressure calibration again. A5/A3™ Service Manual 046-001141-00 4 - 53...
  • Page 240 3. Check the settings of the calibration Measurement range error occurs to the [00 00 00 20] is displayed. device. airway pressure sensor. 4. See section 5.4 (pg. 5-67) "Sensors and Valves Problems". 5. Replace the board. 4 - 54 046-001141-00 A5/A3™ Service Manual...
  • Page 241 1. Check if there is enough gas supply for The resolution of the valve is not the whole calibration process. [00 01 00 00] is displayed. enough. 2. Check if the calibration device works well. 3. Replace the PEEP valve. A5/A3™ Service Manual 046-001141-00 4 - 55...

  • Page 242: Pressure And Flow Zeroing (Service)

    After that, automatic zeoring is performed once every 120 minutes. During mechanical ventilation, before automatic zeroing, the three-way valve is opened and closed for flushing valve. During zeroing or three-way valve opening and closing, the waveform will be depressed. 4 - 56 046-001141-00 A5/A3™ Service Manual...
  • Page 243 1. Select Setup-> Service-> Calibration-> Zero Sensors to access the screen shown below. FIGURE 4-69 2. Select Begin to access the zeroing screen as show below. During the zeroing, you can select Cancel to cancel the zeroing. A5/A3™ Service Manual 046-001141-00 4 - 57...
  • Page 244 Done to exit the zeroing screen. FIGURE 4-71 4. The screen shown below is displayed if the zeroing has failed. Select Try Again to do the zeroing again.Select Done to exit the zeroing screen. 4 - 58 046-001141-00 A5/A3™ Service Manual...
  • Page 245 5. The screen shown below is displayed after a successful zeroing. Select Done to exit the zeroing screen. FIGURE 4-73 NOTE: In case of zeroing failure, other faults may exist. You must isolate and eliminate the problem. A5/A3™ Service Manual 046-001141-00 4 - 59...

  • Page 246: Electronic Flowmeter Zeroing (User)

    Generally, you can zero the flowmeter manually to eliminate the measurement deviation caused by zero offset immediately. 4 - 60 046-001141-00 A5/A3™ Service Manual...
  • Page 247 Begin to start zeroing. FIGURE 4-74 2. The zeroing screen shown below is displayed when Begin is selected. During the zeroing, you can select Cancel to cancel the zeroing. A5/A3™ Service Manual 046-001141-00 4 - 61...
  • Page 248 Done to exit the zeroing screen. FIGURE 4-76 4. The screen shown below is displayed if the zeroing has failed. Select Try Again to do the zeroing again.Select Done to exit the zeroing screen. 4 - 62 046-001141-00 A5/A3™ Service Manual...
  • Page 249 5. The screen shown below is displayed after a successful zeroing. Select Done to exit the zeroing screen. FIGURE 4-78 NOTE: In case of zeroing failure, other faults may exist. You must isolate and eliminate the problem. A5/A3™ Service Manual 046-001141-00 4 - 63...

  • Page 250: Calibrate The Ag Module

    9. Select the Calibrate button to start to calibrate the AG Module. The system will display the results of the calibration status when the process is completed. 10. After calibration, select Done to close the Calibration window. 11. Select Accept to close the Setup window. 4 - 64 046-001141-00 A5/A3™ Service Manual...

  • Page 251: Orc Calibration

    N2O flow. If there is no NO2 flow displayed, turn the O2 resistor on the ORC clockwise with the flathead screwdriver until the N2O flow just begins. FIGURE 4-80 A5/A3™ Service Manual 046-001141-00 4 - 65...
  • Page 252 System Calibration Calibration FIGURE 4-81 O2 Resistor FIGURE 4-82 4 - 66 046-001141-00 A5/A3™ Service Manual...
  • Page 253 N2O flow is 8.3 L/min. If the N2O flow is more than 8.3 L/min, turn the N2O resistor on the ORC clockwise with the flathead screwdriver until the N2O flow is 8.3 L/min. FIGURE 4-84 A5/A3™ Service Manual 046-001141-00 4 - 67...
  • Page 254 5. Turn the O2, AIR and N2O needle valves to the maximum positions. Turn the AIR resistor on the pneumatic resistor block assembly to cause the AIR flow to fall within 15 to 15.5 L/min. 4 - 68 046-001141-00 A5/A3™ Service Manual...
  • Page 255 Calibration System Calibration FIGURE 4-87 AIR Resistor FIGURE 4-88 A5/A3™ Service Manual 046-001141-00 4 - 69...
  • Page 256 System Calibration Calibration FIGURE 4-89 4 - 70 046-001141-00 A5/A3™ Service Manual...

  • Page 257: Cylinder Yoke Regulator Calibration

    The calibration steps of O2 and Air cylinder yoke regulators are same to those of N2O). For O2 and Air, the pressure in the cylinder must be at least 1000 psi. For N2O, the pressure in the cylinder must be at least 500 psi. A5/A3™ Service Manual 046-001141-00 4 - 71...
  • Page 258 1750 47.4 2000 47.1 2250 46.8 1. Turn off the power supply and all gas supplies. Open the service door. FIGURE 4-91 2. Remove the sheet metal at the rear of the equipment. 4 - 72 046-001141-00 A5/A3™ Service Manual...
  • Page 259 (For O2 hose #59; for AIR hose #54; for N2O hose #62). FIGURE 4-93 4. Set the fresh gas flow of the gas being adjusted to 1 L/min. 5. Remove the self-locking acorn nut at the head of the regulator. Install the cylinder. A5/A3™ Service Manual 046-001141-00 4 - 73...
  • Page 260 (rotate clockwise to increase pressure value and counterclockwise to decrease pressure value) until the pressure after adjustment is within the range specified by the table (±5%). After adjusting the pressure, reinstall and tighten the self- locking acorn nut. 4 - 74 046-001141-00 A5/A3™ Service Manual...

  • Page 261: Adjust The Back Pressure Valve

    00 Y piec e and 3106-10-00 adapter connector to monitor and measure the pressure of the front end of the back pressure valve. The connection diagram and connecting ports are shown as follows. Pressure monitor port FIGURE 4-97 A5/A3™ Service Manual 046-001141-00 4 - 75...
  • Page 262 Anesthesia machine calibration device, to set the pressure value to 33±2kPa. 6. Lock the Nut, as shown in the following figure. Bolt FIGURE 4-99 7. Take off 3140-08-00 Y piece and 3106-10-00 adapter connector, and reconnect the pipeline. 4 - 76 046-001141-00 A5/A3™ Service Manual...

  • Page 263: Repair And Troubleshooting

    Repair and Troubleshooting Troubleshooting Guidelines................................5-2 Technical Alarms Check ..................................5-3 Pneumatic Circuit System Problems............................5-17 Sensors and Valves Problems ................................. 5-67 Hardware and Electrical Problems .............................. 5-73 Software Update and Software Configuration Activation ................... 5-75 A5/A3™ Service Manual 046-001141-00 5 - 1...

  • Page 264: Troubleshooting Guidelines

    It is imperative to use the designated equipment in order to ensure proper results of any and all test procedures. 5.1.4 Clean up the repair area After any repair, clean off the repair area. 5 - 2 046-001141-00 A5/A3™ Service Manual...

  • Page 265: Technical Alarms Check

    CPU Board and the ventilator control board. board can't communicate Time out 3. If the problem persists, replace the ventilator control board. with the ventilator control 4. If the problem persists, replace the CPU board. board. A5/A3™ Service Manual 046-001141-00 5 - 3...
  • Page 266 CPU Board and ventilator control board. Ventilator Initialization: parameter settings to 3. If the problem persists, replace the ventilator control board. Time out ventilator board. 4. If the problem persists, replace the CPU Board. 5 - 4 046-001141-00 A5/A3™ Service Manual...
  • Page 267 2. Check the cable connection between the module rack and Error selftest malfunction. CPU board. External AG: Time out 3. Check if the module rack works normally. 4. Replace the external AG module. A5/A3™ Service Manual 046-001141-00 5 - 5...

  • Page 268: Cpu Board Runtime Alarm

    1. Check if the battery voltage is within specifications. Battery 2. Check if the cable is connected correctly. Battery Undetected Undetected 3. Replace the battery. 4. If the problem persists, replace the power board. 5 - 6 046-001141-00 A5/A3™ Service Manual...
  • Page 269 1. Check that the circuit is installed in place. Breathing Circuit Not Breathing Circuit 2. Test the connection between the connection line and the High Mounted Not Mounted connector. 3. Replace the power board. A5/A3™ Service Manual 046-001141-00 5 - 7...

  • Page 270: Fresh Flow Sensor Board Alarm

    2. Check the measurement correctness of flow sensors. If Internal N2O Flow Failure flowmeter CPU measurement error occurs, replace the flow sensor. and N2O flow 3. If the problem persists, replace the fresh flow sensor board. sensor for 3s continuously 5 - 8 046-001141-00 A5/A3™ Service Manual...
  • Page 271 3s continuously Communication failure between the electronic Internal Air Flow Failure flowmeter CPU Handle in the similar way to handling “Internal N2O Flow Failure”. and N2O flow sensor for 3s continuously A5/A3™ Service Manual 046-001141-00 5 - 9...

  • Page 272: Ventilator Control Board Runtime Alarm

    2. Check if the sampling lines of the sensor are connected in correct Check Flow Sensors High 2.Exp reverse flow order. 3. Test the measurement status of the sensor in the valves test tool. 5 - 10 046-001141-00 A5/A3™ Service Manual...
  • Page 273 If this message occurs when using tanks as the gas O2 Supply Failure High O2 Supply Failure supply source, check that the O2 regulator is within specifications and calibrate it as required. A5/A3™ Service Manual 046-001141-00 5 - 11...
  • Page 274 Failed 2. Do leak test again. Manual Only. But the Auto Ventilation is High Auto/Manual switch 1. Place the Auto/Manual switch in Manual position. Non-Functional is in Auto position. 5 - 12 046-001141-00 A5/A3™ Service Manual...

  • Page 275: Real-Time Alarms Of External Ag Module

    CO2 Accuracy Unspecified exceeded the module 2. Replace the AG module. accuracy range. The measured value 1. Re-calibrate the AG module. Enf Accuracy Unspecified exceeded the module 2. Replace the AG module. accuracy range. A5/A3™ Service Manual 046-001141-00 5 - 13...
  • Page 276 3. Replace the AG module. 1. Reduce the concentration of the monitored gas to the The monitored value normal range. FiCO2 Overrange exceeded the module 2. Re-calibrate the AG module. measurement range. 3. Replace the AG module. 5 - 14 046-001141-00 A5/A3™ Service Manual...
  • Page 277 3. Replace the AG module. 1. Reduce the concentration of the monitored gas to the The monitored value FiSEV Overrange normal range. exceeded the module 2. Re-calibrate the AG module. measurement range. 3. Replace the AG module. A5/A3™ Service Manual 046-001141-00 5 - 15...
  • Page 278 3. Replace the AG module. 1. Reduce the concentration of the monitored gas to the The monitored value normal range. Rate Overrange exceeded the module 2. Re-calibrate the AG module. measurement range. 3. Replace the AG module. 5 - 16 046-001141-00 A5/A3™ Service Manual...

  • Page 279: Pneumatic Circuit System Problems

    PU tube (6X200) M6G-020026---* PU tube (6X300) PU tube (8X200) M6G-020014---* Breathing tube M6G-020017---* Ø6 silicone tube A21-000007---* A5/A3 Service Manual 046-001140-00 Test Lung, Adult 0138-00-0012 Tank Wrench 0367-00-0080 Y-Fitting 15 mm connection 0103-00-0508 Respiration Tube, 0.6 meter silicone, 15mm 0004-00-0076 Breathing Bag 2.3 L silicone...
  • Page 280 0119-00-0235** AG Calibration gas 0075-00-0048-01** * = is part of the 115-009450-00 A5/A3 troubleshooting kit. ** = for units with a AG gas module only The following pictures show the tools listed above. FIGURE 5-1 (1) PU tube (4X200), (2) PU tube (6X100), (3) PU tube (6X200), (4) PU tube (6X300), (5) PU tube (8X200), (6) Ø6 silicone tube, (7) Breathing tube, (8) 3106-04-06 adapter...
  • Page 281 3126-10-00 tube plug, (17) Y piece, (18) 3140-08-00 Y piece, (19) Breathing tube Y piece Negative pressure ball: FIGURE 5-2 Circuit adapter test fixture: FIGURE 5-3 Flow sensor pressure sampling pipeline test fixture: FIGURE 5-4 A5/A3™ Service Manual 046-001141-00 5 - 19...
  • Page 282 Pneumatic Circuit System Problems Repair and Troubleshooting Vaporizer manifold test fixture: FIGURE 5-5 Anesthesia machine calibration device (fluke VT plus): FIGURE 5-6 Anesthesia machine calibration device (TSI Certifier 4070): FIGURE 5-7 5 - 20 046-001141-00 A5/A3™ Service Manual...
  • Page 283 The connectors for pressure sampling lines can be connected with Ø6 silicone tubes and the Ø6 quick plug-in connectors with PU tube (6X100), PU tube (6X200) and PU tube (6X300), as shown below. A5/A3™ Service Manual 046-001141-00 5 - 21...
  • Page 284 The circuit adapter test fixture can be mounted either onto the circuit adapter or onto the removed breathing system. The following pictures show the test fixture mounted in position. FIGURE 5-11 FIGURE 5-12 5 - 22 046-001141-00 A5/A3™ Service Manual...
  • Page 285 Inspiration/Expiration Connector Coupling, as shown below. Perform test after connecting the Ø6 silicone tube to the connector for pressure sampling line. A5/A3™ Service Manual 046-001141-00 5 - 23...
  • Page 286 Precautions for Use of Vaporizer Manifold Test Fixture When using the vaporizer manifold test fixture, remove the o-ring seal on the vaporizer manifold assembly. Then slide the test fixture onto the connector, as shown below. FIGURE 5-17 5 - 24 046-001141-00 A5/A3™ Service Manual...
  • Page 287 FIGURE 5-19 When the negative pressure ball is connected with the tested component, the ball permits the gas in only, but meanwhile it’s free to release air when it’s pressed. A5/A3™ Service Manual 046-001141-00 5 - 25...

  • Page 288: Gas Supplies And Drive Gas

    ‘‘Leak Test of Low- leaks. pressure Pneumatic Circuit System’’ on page 5-53, Pipeline pressure gauge The pipeline pressure shows inaccurate Replace the pipeline pressure gauge. gauge is damaged. readings or no readings. 5 - 26 046-001141-00 A5/A3™ Service Manual...
  • Page 289 2. Disconnect tube 57. The end of the tube which connects the auxiliary O2 supply is not pulled out but the end to Y piece is pulled out.Connect 1MPa test pressure gauge to the above Y piece through “3106-04-06 adapter connector”. A5/A3™ Service Manual 046-001141-00 5 - 27...
  • Page 290 6. Disconnect tube 39 which connects the O2 supply inlet assembly to the O2 pipeline pressure gauge. Remove the end of tube to the O2 supply inlet assembly. 7. Connect 1MPa test pressure gauge to the outlet of O2 supply inlet assembly through “3106-04- 06 adapter connector”. 5 - 28 046-001141-00 A5/A3™ Service Manual...
  • Page 291 Disconnect tube 49. The end of the tube which connects the ORC is pulled out but the other end is not pulled out. 2. Connect 1MPa test pressure gauge, the pulled-out end of tube 49, and ORC N2O outlet through “3106-04-06 adapter connector” and Y piece (17). A5/A3™ Service Manual 046-001141-00 5 - 29...
  • Page 292 N2O pipeline pressure gauge is more than 0.1 MPa (1bar), it indicates that the N2O pipeline pressure gauge is damaged. Handle this problem as described in the troubleshooting table. 9. Reconnect tubing to pressure gauge. Reconnect tube 40. 5 - 30 046-001141-00 A5/A3™ Service Manual...
  • Page 293 6. Pull out No.41 PU tube which connects the AIR supply inlet assembly to the AIR pipeline pressure gauge. Remove the tube end which connects AIR supply inlet assembly. 7. Connect 1MPa test pressure gauge to the outlet of AIR supply inlet assembly through “3106-04- 06 adapter connector”. A5/A3™ Service Manual 046-001141-00 5 - 31...
  • Page 294 PU tube and also the pulled-out end of tube 47 to the two connectors of “3140- 08-00 Y piece” respectively. 4. Connect the test pressure gauge to the third connector of “3140-08-00 Y piece” through “3106- 06-08 adapter connector” and “3106-04-06 adapter connector”. 5 - 32 046-001141-00 A5/A3™ Service Manual...
  • Page 295 Pressure Low” alarm does not occur 10 seconds later, it indicates that the pressure switch on the integrated pneumatic circuit of the expiratory valve assembly is defective. Troubleshoot this problem as described in the relevant failure table. A5/A3™ Service Manual 046-001141-00 5 - 33...
  • Page 296 Regulator Calibration hose (PN 0453-00-1216). Then, turn on the pipeline gas supply again. Observe the adjusted pressure through the test pressure gauge. Adjust to 200kPa. 5 - 34 046-001141-00 A5/A3™ Service Manual...

  • Page 297: Anesthetic Gas Delivery System

    Re-calibrate after the restrictor is The restrictor leaks. replaced. The pressure relief valve at the breathing Check and replace the defective connection leaks. pressure relief valve. The CGO assembly leaks. Replace the CGO assembly. A5/A3™ Service Manual 046-001141-00 5 - 35...
  • Page 298 4. Release the negative pressure ball as shown below. If the negative pressure ball is fully expanded within 30 seconds, it indicates that the O2 flush button assembly is damaged. 5 - 36 046-001141-00 A5/A3™ Service Manual...
  • Page 299 4. Pull out No.46, 49 and 51 PU tubes which connect with the flow regulator. Disconnect at flow regulator end. 5. Occlude the pulled-out tube end on the flow regulator by using three 3126-06-00 tube plugs. A5/A3™ Service Manual 046-001141-00 5 - 37...
  • Page 300 8. Pull out No.26 PU tube which connects the back pressure regulator to the total flowmeter. Disconnect at the total flowmeter end. 9. Occlude the pulled-out tube end on the total flowmeter by using 3126-08-00 tube plug. 5 - 38 046-001141-00 A5/A3™ Service Manual...
  • Page 301 13. Occlude the pulled-out tube end on the back pressure regulator by using one 3126-08-00 tube plug and connect the negative pressure ball to the pulled-out end of No.26 PU tube through 3106-06-08 adapter connector. A5/A3™ Service Manual 046-001141-00 5 - 39...
  • Page 302 18. Disconnect tube 58 and plug out its end connecting the back pressure valve. Connect the negative pressure ball to the pulled-out end of tube 58 through “3106-06-08 adapter connector”. 19. Flatten the negative pressure ball to remove the gas inside. 5 - 40 046-001141-00 A5/A3™ Service Manual...
  • Page 303 “3106-06-00 adapter connector” (disconnect tube 28 for AIR branch and tube 29for O2 branch). Compress the negative pressure ball to bleed the gas inside. FIGURE 5-38 A5/A3™ Service Manual 046-001141-00 5 - 41...
  • Page 304 “3106- 06-00 adapter connector” and PU tube (6X200) (disconnect tube 90 for AIR branch and tube 73 for O2 branch). Compress the negative pressure ball to bleed the gas inside. 5 - 42 046-001141-00 A5/A3™ Service Manual...
  • Page 305 Repair and Troubleshooting Pneumatic Circuit System Problems FIGURE 5-41 FIGURE 5-42 A5/A3™ Service Manual 046-001141-00 5 - 43...
  • Page 306 3. Pull out No.43 which connects the system switch assembly to the Y piece. Disconnect at the Y piece end and occlude the pulled-out tube end through one 3106-06-08 adapter connector and one 3126-08-00 tube plug. 4. Flatten the negative pressure ball to remove the gas inside. 5 - 44 046-001141-00 A5/A3™ Service Manual...
  • Page 307 FIGURE 5-45 9. Release the negative pressure ball. If the negative pressure ball is fully expanded within 30 seconds during one of the two tests, it indicates that the system switch assembly is damaged. A5/A3™ Service Manual 046-001141-00 5 - 45...
  • Page 308 30. The end of the tube which connects the ORC is not pulled out but the other end is pulled out and is connected to the negative pressure ball through “3106-06-00 adapter connector”. 5 - 46 046-001141-00 A5/A3™ Service Manual...
  • Page 309 Perform a leak test of the vaporizer manifold assembly by using the following tools: • Negative pressure ball (quantity:1) • 3106-06-08 adapter connector (quantity:1) • 3126-06-00 tube plug (quantity:1) • PU tube (6X100) (quantity:1) • PU tube (8X200) (quantity:1) • Vaporizer manifold test fixture (quantity:1) A5/A3™ Service Manual 046-001141-00 5 - 47...
  • Page 310 7. Remove the seal ring, and mount the vaporizer manifold test fixture onto the connector of the vaporizer manifold assembly (remove the seal between the connector and the vaporizer when mounting the test fixture) 5 - 48 046-001141-00 A5/A3™ Service Manual...
  • Page 311 Once the negative pressure ball is fully expanded within 30s, it indicates that the seal rings are damaged. If the two tests are both past, then the vaporizer manifold assembly and the four seal rings are OK. A5/A3™ Service Manual 046-001141-00 5 - 49...

  • Page 312: Breathing System

    Supply Inlet Assembly’’ on page 5-34 The condensate valve of the canister Re-install the condensate valve or replace assembly is not installed properly or the the damaged seal inside. seal inside is damaged. 5 - 50 046-001141-00 A5/A3™ Service Manual...
  • Page 313 Anesthesia machine calibration device (quantity:1) • Flow sensor pressure sampling pipeline test fixture (quantity:1) • Circuit adapter test fixture (quantity:1) • Injector (quantity:1) • Ø6 silicone tube (quantity:3) • Y piece (quantity:1) Test procedures: A5/A3™ Service Manual 046-001141-00 5 - 51...
  • Page 314 (one connector out of No.3 through 6 connectors on the test fixture) for the circuit adapter test fixture by using a Y piece, as shown below. 5 - 52 046-001141-00 A5/A3™ Service Manual...
  • Page 315 After making sure that the flow sensor pressure sampling pipeline is not leaky, perform leak tests of the low-pressure pneumatic circuit system as shown in the following figures. FIGURE 5-55 System Leak Test A5/A3™ Service Manual 046-001141-00 5 - 53...
  • Page 316 Pneumatic Circuit System Problems Repair and Troubleshooting FIGURE 5-56 Leak test of the part only working in the manual ventilation mode FIGURE 5-57 Leak test of the pipelines inside the main unit 5 - 54 046-001141-00 A5/A3™ Service Manual...
  • Page 317 4. Set the pressure of the APL valve to maximum. 5. Occlude the inspiratory and expiratory ports and bag arm port by using three breathing tubes and one breathing tube Y piece as shown below. A5/A3™ Service Manual 046-001141-00 5 - 55...
  • Page 318 (of the anesthesia machine calibration device) connector (positive pressure end), and No.2 connector to which drive gas corresponds on the circuit adapter test fixture by using a Y piece, as shown below. 5 - 56 046-001141-00 A5/A3™ Service Manual...
  • Page 319 Connect the other end of the negative pressure ball to the No.7 connector (on the circuit adapter test fixture) fresh gas pipeline of the circuit adapter test fixture, as shown below. A5/A3™ Service Manual 046-001141-00 5 - 57...
  • Page 320 8. Select [Setup] >[Service] > [Diagnostic Tests] > [Valves] to set the A/D value of the PEEP valve to make PEEP exceed 50 cmH2O. Set the A/D value of the inspiratory valve to “0” to produce 0 L/min of flow. Set PEEP safety valve to ON, as shown below. 5 - 58 046-001141-00 A5/A3™ Service Manual...
  • Page 321 PU tube (6X300) (quantity: 1) • Breathing tube (quantity: 3) • Y piece (quantity: 1) • Breathing tube Y piece (quantity: 1) • Breathing tube adapter connector (quantity: 1) • T-shaped Allen wrench (quantity: 1) A5/A3™ Service Manual 046-001141-00 5 - 59...
  • Page 322 10cmH2O within 30 seconds, it indicates that absorb canister assembly are leaky. The test is failed. This step is required when the absorbent canister assembly is in bypass on or bypass off status. FIGURE 5-63 Lucer adapter connector 5 - 60 046-001141-00 A5/A3™ Service Manual...
  • Page 323 6. Check the seals on the two connections of the lifting device. It they are damaged, replace the seal and then re-mount the lifting device onto the breathing system. 6. Check the accessories and circuit inspiratory and expiratory parts A5/A3™ Service Manual 046-001141-00 5 - 61...
  • Page 324 3. Remove the support tube on the median plate. Check the seals and replace the defective ones. 4. Remove the Auto/Manual ventilation switch. Check the seals and replace the defective ones. 8. Check the CGO assembly 5 - 62 046-001141-00 A5/A3™ Service Manual...
  • Page 325 5. Pull out No.52 and 53 PU tubes which connect the O2 flush button assembly and the vaporizer manifold assembly to the CGO assembly. Disconnect at CGO assy. end. 6. Occlude the pulled-out tube ends by using 3126-06-00 and 3126-08-00 tube plugs, as shown below. A5/A3™ Service Manual 046-001141-00 5 - 63...

  • Page 326: Tidal Volume

    ” on page 4-18.. Repair the leaking points after checking as *The flow sensor pressure sampling per the procedures described in “Leak Test pipeline is leaky. of Flow Sensor Pressure Sampling Pipeline” on page 5-51.. 5 - 64 046-001141-00 A5/A3™ Service Manual...
  • Page 327 7. Select [Setup] > [Service] > [Diagnostic Tests] > [Valves] to set the A/D value of the PEEP valve to make PEEP exceed 40 cmH2O. Set PEEP safety valve to ON, as shown below. A5/A3™ Service Manual 046-001141-00 5 - 65...
  • Page 328 For each point, the flows measured by the three sensors should be the same. If not, the measured value by the flow sensor is inaccurate. Troubleshoot the possible causes marked “*” in the above table. 5 - 66 046-001141-00 A5/A3™ Service Manual...

  • Page 329: Sensors And Valves Problems

    FIGURE 5-71 5.4.2 Correspondence with Hardware Components The following figure shows how the sampling lines of the sensors are actually connected on the ventilator control board. A5/A3™ Service Manual 046-001141-00 5 - 67...

  • Page 330: Preparations Before Using Diagnostic Tests

    [Diagnostic Tests] menu. 5.4.4 Zero Points of Flow & Pressure Sensors Problems By using the [Diagnostic Tests], you can easily detect if the zero points of all the pressure and flow sensors are within specifications. 5 - 68 046-001141-00 A5/A3™ Service Manual...

  • Page 331: Connections And Measurement Of The Flow Sensors Problems

    Otherwise, the calibration data have errors. You need to calibrate the flow sensor again. For details, refer to “Check the Flow Sensor Accuracy” on page 3-19.. A5/A3™ Service Manual 046-001141-00 5 - 69...

  • Page 332: Connections And Measurement Of The Pressure Sensors Problems

    Otherwise, the calibration data have errors. You need to calibrate the pressure sensor again. For details, refer to “Check the Flow Sensor Accuracy” on page 3-19. 5 - 70 046-001141-00 A5/A3™ Service Manual...

  • Page 333: Opening State Of The Inspiratory Valve Problems

    0V. If these two conditions are met simultaneously, the ventilator control board is normal. 6. If the PEEP safety valve is defective, replace the expiratory valve assembly. After replacement, you can use the similar method to check if the problem is fixed. A5/A3™ Service Manual 046-001141-00 5 - 71...

  • Page 334: Opening State Of The Peep Valve Problems

    D/A value is greater than this range, the pressure output will increase with the increase of D/ A value. This phenomenon also exists for the inspiratory valve. 3. For subsequent diagnosis rules, refer to ‘‘Opening State of the Inspiratory Valve Problems’’ on page 5-71. 5 - 72 046-001141-00 A5/A3™ Service Manual...

  • Page 335: Hardware And Electrical Problems

    The heater is damaged. The heater is ineffective. Replace the heater. The internal sensor of heater is ineffective. The cable connected to heater Check and make sure that the cable is falls off. connected properly. A5/A3™ Service Manual 046-001141-00 5 - 73...
  • Page 336 The cables between CPU board CPU board and infrared and infrared communication Properly insert the cables. communication board fails. board get loose. The communication board or Replace the communication board or CPU board is damaged. CPU board. 5 - 74 046-001141-00 A5/A3™ Service Manual...

  • Page 337: Software Update And Software Configuration Activation

    00027-00), the Power Board (P/N: 801-0631-00025-00) or the Fresh Flow Sensor Board (P/N: 801-0631-00040-00). 1. Connect the Ethernet port of the PC to the Ethernet port of the A5/A3 using the Ethernet Crossover Cable. 2. Before running Mindray Patient Monitor System Update Tool, verify that the IP address of the PC is set to 192.168.23.1., and the Subnet mask is set to 255.255.255.0.
  • Page 338 Software Update and Software Configuration Activation Repair and Troubleshooting FIGURE 5-73 3. Make sure that the Mindray Patient Monitor System Update Tool has been installed to the PC. If it has not been installed then follow these steps: 1. Run the SystemUpdateToolForService.exe file (G-110-001396-00).
  • Page 339 Version and Note are correct from the table above. If they are correct then click OK. 9. Turn on the A5/A3 unit on, wait at least ten seconds before proceeding to the next step. 10.Click “Start (Single)” on the Mind ray Anesthesia Machine and Ventilator Software Upgrade Tool 4.0.
  • Page 340 15.Once the last file is upgraded turn off the A5/A3 unit and then restart A5/A3 unit. 16.Check the software version on the A5/A3 by clicking Setup then Service, enter the service password "789789"...

  • Page 341: Repair And Disassembly

    Repair and Disassembly Prepare for Disassembly ..................................6-2 Disassemble the Assemblies ................................6-3 Disassemble the Breathing System ............................6-47 A5/A3™ Service Manual 046-001141-00 6 - 1...

  • Page 342: Prepare For Disassembly

    4. Make sure that N2O and AIR pipeline pressure gauges read zero. 5. Disconnect the O2 pipeline supply (or close the O2 cylinder valve). Push the O2 flush button to bleed O2 from the system. 6. Set the system switch to OFF. 6 - 2 046-001141-00 A5/A3™ Service Manual...

  • Page 343: Disassemble The Assemblies

    3. Unscrew the two screws from the N2O and AIR supply inlet assemblies. 4. Unplug the related cables from O2 supply inlet assembly and unscrew the two screws to remove the assembly. FIGURE 6-2 A5/A3™ Service Manual 046-001141-00 6 - 3...
  • Page 344 Remove the Electronic Flowmeter Assembly 1. Open the service door. 2. Unplug the related cables and tubes from the electronic flowmeter. 3. .Unscrew the four screws and remove the electronic flowmeter. FIGURE 6-4 6 - 4 046-001141-00 A5/A3™ Service Manual...
  • Page 345 3. Unscrew the four screws on the gas mixer assembly to remove the assembly. FIGURE 6-6 4. Unscrew the two screws on the support plate of the regulator to remove the gas mixer assembly. FIGURE 6-7 A5/A3™ Service Manual 046-001141-00 6 - 5...
  • Page 346 Remove the Back Pressure Valve Assembly 1. Open the service door. 2. Unplug the tubes from back pressure valve assembly. 3. Unscrew the four screws on the back pressure valve assembly to remove the assembly. FIGURE 6-9 6 - 6 046-001141-00 A5/A3™ Service Manual...
  • Page 347 FIGURE 6-10 6.2.1.10 Remove the Vaporizer Manifold 1. Open the service door. 2. Unplug the tubes from the vaporizer manifold. 3. Unscrew the four screws and remove the vaporizer manifold. FIGURE 6-11 A5/A3™ Service Manual 046-001141-00 6 - 7...

  • Page 348: Disassemble Hardware Box

    Remove the Top Plate of the Hardware Box 1. Unscrew the three screws from the top plate of the hardware box. FIGURE 6-13 2. Lift off the top plate to remove it. FIGURE 6-14 6 - 8 046-001141-00 A5/A3™ Service Manual...
  • Page 349 Remove the Ventilator Control Board NOTE: When replacing the Ventilator Control Board, software reinstallation may be required. 1. Remove the top plate assembly. 2. Unplug the related cables and tubes from the ventilator control board. FIGURE 6-16 A5/A3™ Service Manual 046-001141-00 6 - 9...
  • Page 350 Repair and Disassembly 3. Unscrew the four screws fastening the ventilator control board to remove it. FIGURE 6-17 Refer to “Connections Between Pneumatic Circuit, Breathing System and Ventilator Control Board” on page 1-16. 6 - 10 046-001141-00 A5/A3™ Service Manual...
  • Page 351 3. Unplug the filter cable plug. Unscrew the screw on the power board support sheet, three screws and one nut fastening the power board to remove the power board. FIGURE 6-19 4. Unscrew the screw on the power board support sheet to remove the support sheet. FIGURE 6-20 A5/A3™ Service Manual 046-001141-00 6 - 11...
  • Page 352 FIGURE 6-21 3. Unscrew the three screws on the three-way valve to remove the solenoid valve assembly. FIGURE 6-22 Refer to “Connections Between Pneumatic Circuit, Breathing System and Ventilator Control Board” on page 1-16.. 6 - 12 046-001141-00 A5/A3™ Service Manual...
  • Page 353 Repair and Disassembly Disassemble the Assemblies 6.2.2.6 Remove the Speaker 1. Remove the top plate assembly. 2. Unplug the speaker cables from the backplane. 3. Unscrew the two screws to remove the speaker. FIGURE 6-23 A5/A3™ Service Manual 046-001141-00 6 - 13...
  • Page 354 Disassemble the Rear Panel Assembly 1. Remove the top plate assembly. 2. Remove the cables and tubes from the hardware box assembly and other A5/A3 assemblies. FIGURE 6-24 3. Unscrew the three screws fastening the power plug protection hook to remove the power cord and protection hook.
  • Page 355 6. Remove related cables and tubes on the rear panel assembly from other assemblies 7. Unscrew the elevn screws on the rear panel of hardware box to remove the rear panel assembly. FIGURE 6-28 A5/A3™ Service Manual 046-001141-00 6 - 15...
  • Page 356 2. Unscrew the four screws on the fan to remove the fan. FIGURE 6-29 Remove the Filter 1. Remove the rear panel assembly of hardware box. 2. Unscrew the five screws on the filter to remove the filter. FIGURE 6-30 6 - 16 046-001141-00 A5/A3™ Service Manual...
  • Page 357 FIGURE 6-31 3. Unscrew the two screws on each auxiliary outlet to remove the auxiliary outlets. The A5 has four (4) auxiliary outlets, as shown in the photograph below. The A3 has three (3) auxiliary outlets (not shown). FIGURE 6-32 A5/A3™...
  • Page 358 Repair and Disassembly Remove the Breaker Assembly 1. Remove the rear panel assembly of the hardware box. 2. Unscrew the breaker screws to remove each breaker. The A5 has five (5) breakers. The A3 has three (3) breakers. FIGURE 6-33...

  • Page 359: Disassemble The Work Surface

    2. Lift up the locking piece on the right rail of drawer, and press down on the locking piece on the left rail at the same time. FIGURE 6-34 3. Take out the drawer. A5/A3™ Service Manual 046-001141-00 6 - 19...
  • Page 360 2. Unscrew the five screws on the work surface cover plate. FIGURE 6-35 3. .Lift off the cover plate from the work surface. When the cover plate is removed, the internal structure of the work surface is shown as below: FIGURE 6-36 6 - 20 046-001141-00 A5/A3™ Service Manual...
  • Page 361 Remove the Rear Panel Assembly 1. Rotate the cylinder's yoke to remove the cylinder. FIGURE 6-38 2. Unplug the AGSS transfer tube connecting to the exhaust tube and refer to “Remove the AGSS Assembly” on page 6-43.. A5/A3™ Service Manual 046-001141-00 6 - 21...
  • Page 362 3. Unscrew the six screws on the lower rear panel assembly to remove it. FIGURE 6-39 4. Unscrew the four screws on the upper rear panel (yoke cover) to remove it. FIGURE 6-40 6 - 22 046-001141-00 A5/A3™ Service Manual...
  • Page 363 3. Unscrew the four screws on the expiration valve assembly to remove the assembly. FIGURE 6-42 6.2.3.6 Remove the O2 Flush Assembly 1. Remove the work surface cover plate. 2. Remove the metal cover plate. 3. Unplug the tubes from the O2 flush assembly. A5/A3™ Service Manual 046-001141-00 6 - 23...
  • Page 364 4. Unscrew the two screws on the bracket and remove it. FIGURE 6-43 5. Remove the metal post on the right side of the O2 flush assembly. 6. Unscrew the five screws around the O2 flush assembly to remove it. FIGURE 6-44 6 - 24 046-001141-00 A5/A3™ Service Manual...
  • Page 365 1. Remove the work surface cover plate. 2. Remove the metal cover plate. 3. Unplug the touch panel data cable. 4. Remove the six screws on the touch panel to remove the panel. A5/A3™ Service Manual 046-001141-00 6 - 25...
  • Page 366 Disassemble the Assemblies Repair and Disassembly FIGURE 6-47 6.2.3.8 Remove the Common Gas Outlet Assembly 1. Remove the work surface cover plate. 2. Unplug the tubes from common gas outlet assembly. 6 - 26 046-001141-00 A5/A3™ Service Manual...
  • Page 367 5. Remove the four screws on the cylinder bracket to remove the assembly. FIGURE 6-49 6. Unscrew the four screws on the cylinder bracket to remove O2, N2O and AIR cylinder bracket assemblies. FIGURE 6-50 A5/A3™ Service Manual 046-001141-00 6 - 27...
  • Page 368 Disassemble the Assemblies Repair and Disassembly 7. The removed cylinder bracket assembly is shown below FIGURE 6-51 6 - 28 046-001141-00 A5/A3™ Service Manual...

  • Page 369: Disassemble The Display

    1. Open the service door and refer to “Open the Service Door” on page 6-3.. 2. Remove the related cables and tubes from hardware box and remove the four mounting screws to remove the display. A5/A3™ Service Manual 046-001141-00 6 - 29...
  • Page 370 Disassemble the Assemblies Repair and Disassembly FIGURE 6-54 6.2.4.1 Remove the Alarm Lamp Board 1. Remove the display assembly. 2. Unplug the related cables from the alarm lamp board. 6 - 30 046-001141-00 A5/A3™ Service Manual...
  • Page 371 2. Unscrew the five screws on the cover plate of the display mount. FIGURE 6-56 3. Unplug the related cables from the display interface board. 4. Remove the four screws on the display interface board and remove the board. A5/A3™ Service Manual 046-001141-00 6 - 31...
  • Page 372 Remove the Touch Screen Control Board 1. Remove display assembly. 2. Remove the four screws and the cover plate of the touch screen control board. FIGURE 6-58 3. Unplug the related cables from the touch screen control board. 6 - 32 046-001141-00 A5/A3™ Service Manual...
  • Page 373 Remove the Backlight Inverter Board 1. Remove display assembly. 2. Remove the four screws and the cover plate of the backlight inverter board. FIGURE 6-60 3. Unplug the related cables from the backlight inverter board. A5/A3™ Service Manual 046-001141-00 6 - 33...
  • Page 374 Remove the Needle Valve Assemblies 1. Remove display assembly and refer to “Disassemble the Display” on page 6-29.. 2. Loosen the two Allen set screws on the knob of needle valve to remove the knob. FIGURE 6-62 6 - 34 046-001141-00 A5/A3™ Service Manual...
  • Page 375 3. Remove the two screws on the needle valve assembly to remove the assembly. FIGURE 6-63 6.2.4.6 Remove the Touch Screen 1. Remove display assembly. 2. Unplug the related cables from the touch screen control board. FIGURE 6-64 A5/A3™ Service Manual 046-001141-00 6 - 35...
  • Page 376 4. Slightly lift the touch screen off the display front cover to remove the touch screen. FIGURE 6-66 6.2.4.7 Remove the Display Replacement Package 1. Remove the display interface board. 2. Remove the touch screen control board. 3. Remove the touch screen. 6 - 36 046-001141-00 A5/A3™ Service Manual...
  • Page 377 Repair and Disassembly Disassemble the Assemblies 4. When the above mentioned assemblies are removed from the display, the remaining part is considered the display replacement package. FIGURE 6-67 A5/A3™ Service Manual 046-001141-00 6 - 37...

  • Page 378: Remove The Module Rack Assembly

    2. Unplug the cable plug connecting the module rack assembly. FIGURE 6-68 3. Unscrew the four screws to remove the module rack assembly. FIGURE 6-69 4. Unscrew the five screws to remove the infrared communication board. FIGURE 6-70 6 - 38 046-001141-00 A5/A3™ Service Manual...

  • Page 379: Remove The Module Rack Fan

    3. Unscrew the four screws to remove the module rack bracket assembly. FIGURE 6-71 4. Unscrew the two screws to remove the fan and bracket. FIGURE 6-72 5. Unscrew the four screws to remove the module rack fan. FIGURE 6-73 A5/A3™ Service Manual 046-001141-00 6 - 39...

  • Page 380: Remove The Panel Of Pressure Gauges

    4. Remove the three copper pipes on the high-pressure gauges from cylinder bracket assembly and refer to “Remove the Cylinder Bracket Assembly” on page 6-27.. FIGURE 6-74 5. Remove the four screws on the gauge panel to remove the panel. FIGURE 6-75 6 - 40 046-001141-00 A5/A3™ Service Manual...
  • Page 381 2. Unscrew the 12 screws on the pressure gauges to remove both the supply gas gauges and the high-pressure gauges. FIGURE 6-76 6.2.7.2 Remove the Total Flowmeter 1. Remove the meter panel. 2. Remove the four screws on the total flowmeter and to remove it. FIGURE 6-77 A5/A3™ Service Manual 046-001141-00 6 - 41...

  • Page 382: Remove The Auxiliary Gas Outlet Assembly

    FIGURE 6-79 6.2.8 Remove the Auxiliary Gas Outlet Assembly 1. Open the service door and refer to “Open the Service Door” on page 6-3.. 2. Unplug the related tubes from auxiliary gas outlet assembly. 6 - 42 046-001141-00 A5/A3™ Service Manual...

  • Page 383: Remove The Rotating Block Cover Of Breathing Circle

    Remove the AGSS Assembly 1. Unplug the transfer tubes from AGSS assembly. 2. Loosen the AGSS rail locking knob on the AGSS assembly. Lift the AGSS assembly along the side to remove the assembly. A5/A3™ Service Manual 046-001141-00 6 - 43...

  • Page 384: Disassemble The Base Assembly

    FIGURE 6-82 6.2.11 Disassemble the Base Assembly 6.2.11.1 Remove the Caster Assembly 1. Remove the breathing system and tilt the A5/A3 backward. FIGURE 6-83 2. Remove the four screws and remove the caster assembly. 6 - 44 046-001141-00 A5/A3™ Service Manual...
  • Page 385 FIGURE 6-84 6.2.11.2 Remove the Brake Indicator Drive Plate I and II (A5 Only) 1. Tilt A5/A3 backward. 2. Unscrew the two screws on the brake indicator drive plate I to remove the plate. FIGURE 6-85 3. Unscrew the one screw on the brake indicator drive plate II to remove the plate.
  • Page 386 Disassemble the Assemblies Repair and Disassembly FIGURE 6-87 6.2.11.4 Remove the Brake Main Axis (A5 Only) 1. Tilt A5/A3 backward. 2. Remove brake assembly. 3. Remove the six screws and remove the brake main axis. FIGURE 6-88 6.2.11.5 Remove the Principal Axis of Brake (A5 Only) 1.

  • Page 387: Disassemble The Breathing System

    Breathing System by pulling straight out. FIGURE 6-89 2. Turn the black plug counterclockwise to take it out of the housing.And then turn the O2 sensor counterclockwise to take it out of the threaded cup. FIGURE 6-90 A5/A3™ Service Manual 046-001141-00 6 - 47...

  • Page 388: Remove The Breathing Tubes

    1. Remove the filter from the Y piece. FIGURE 6-91 2. Disconnect the breathing tubes from the inspiration/expiration connectors on the circuit. FIGURE 6-92 6 - 48 046-001141-00 A5/A3™ Service Manual...

  • Page 389: Remove The Flow Sensor

    2. Pull out the inspiration and expiration connectors together with their locking nuts. And then pull out the flow sensors horizontally. FIGURE 6-94 3. The following pictures show the appearance of inspiratory and expiratory flow sensor assemblies. A5/A3™ Service Manual 046-001141-00 6 - 49...

  • Page 390: Remove The Manual Bag

    Remove the Manual Bag Remove the manual bag from the connector on the breathing system as shown below. FIGURE 6-96 6.3.5 Remove the Absorbent Canister 1. Hold and turn the rotary handle clockwise for 45 degrees. 6 - 50 046-001141-00 A5/A3™ Service Manual...
  • Page 391 Sodalime is a caustic substance and is a strong irritant to eyes, skin and respiratory system. Affected areas should be flushed with water. If irritation continues after flushing with water, seek medical assistance immediately. A5/A3™ Service Manual 046-001141-00 6 - 51...

  • Page 392: Remove The Co2 Bypass Assembly

    6.3.6 Remove the CO2 Bypass Assembly 1. Remove the absorbent canister as per section 6.3.5. 2. Press inward the fasteners on both sides and the CO2 bypass assembly will drop down for removal. 6 - 52 046-001141-00 A5/A3™ Service Manual...
  • Page 393 FIGURE 6-102 Make sure that the sealing cushion is correctly installed. The comparison between correct installation and incorrect installation is shown below. A5/A3™ Service Manual 046-001141-00 6 - 53...

  • Page 394: Remove The Patient Circle Assembly

    1. Remove the CO2 Bypass assembly as per section 6.3.6. 2. Pull the patient circle assembly away from the rotating block assembly. FIGURE 6-104 6.3.8 Remove the Bellows Assembly 1. Turn the bellows dome counterclockwise and lift off to remove. 6 - 54 046-001141-00 A5/A3™ Service Manual...

  • Page 395: Remove The Pop-Off Valve Assembly

    Remove the Pop-off Valve Assembly 1. Remove the bellows assembly as per section 6.3.10. 2. Unscrew the four locking screws as shown in the picture. Hold and pull up the Pop-Off valve cover to remove it. A5/A3™ Service Manual 046-001141-00 6 - 55...
  • Page 396 Disassemble the Breathing System Repair and Disassembly FIGURE 6-107 3. Take out the rubber and metal Pop-Off valve. FIGURE 6-108 6 - 56 046-001141-00 A5/A3™ Service Manual...

  • Page 397: Disassemble The Expiratory/Inspiratory Check Valve Assemblies

    6.3.10 Disassemble the Expiratory/Inspiratory Check Valve Assemblies 1. Turn the check valve cover counterclockwise to remove it. FIGURE 6-109 2. Pull out the check valve as shown in the following picture. FIGURE 6-110 A5/A3™ Service Manual 046-001141-00 6 - 57...

  • Page 398: Remove The Water Collection Cup

    Disassemble the Breathing System Repair and Disassembly 6.3.11 Remove the Water Collection Cup 1. Hold the water collection cup and turn it counterclockwise to remove it. FIGURE 6-111 2. Remove the water collection cup. FIGURE 6-112 6 - 58 046-001141-00 A5/A3™ Service Manual...

  • Page 399: Remove The Airway Pressure Gauge

    FIGURE 6-113 6.3.13 Remove the Bag Arm 1. Unscrew the locking nut counterclockwise and lift straight up to remove bag arm. FIGURE 6-114 2. Remove the bag arm from the bag arm mount. A5/A3™ Service Manual 046-001141-00 6 - 59...

  • Page 400: Remove The Back Upper Cover And Back Lower Cover Assemblies

    6.3.1,6.3.2, 6.3.4, 6.3.7, 6.3.8, 6.3.11, 6.3.12, 6.3.13. 2. Unscrew the six screws as shown in the following picture. FIGURE 6-116 3. Unscrew the knurled thumb nut as shown in the following picture. 6 - 60 046-001141-00 A5/A3™ Service Manual...
  • Page 401 Disassemble the Breathing System FIGURE 6-117 4. Turn over the circle. Pull up to separate the back upper cover assembly. FIGURE 6-118 5. Pull leftwards to take out the back lower cover assemblies. A5/A3™ Service Manual 046-001141-00 6 - 61...

  • Page 402: Remove The Front Upper Cover, Median Plate And Front Lower Cover Assemblies

    1. Remove the Back Upper Cover and Back Lower Cover Assemblies as per section 6.3.16. 2. Remove the two screws on the lower cover. FIGURE 6-120 3. Loosen the six screws on the upper cover. 6 - 62 046-001141-00 A5/A3™ Service Manual...
  • Page 403 Repair and Disassembly Disassemble the Breathing System FIGURE 6-121 4. Loosen the captive screws on the upper cover. FIGURE 6-122 5. Hold the upper cover assembly tightly and pull it up to remove it. A5/A3™ Service Manual 046-001141-00 6 - 63...

  • Page 404: Disassemble The Automatic/Manual Ventilation Switch Assembly

    Disassemble the Automatic/Manual Ventilation Switch Assembly 1. Remove the upper cover as per section 6.3.17. 2. Turn over the upper cover assembly to access the three screws as shown in the following picture. 6 - 64 046-001141-00 A5/A3™ Service Manual...
  • Page 405 Repair and Disassembly Disassemble the Breathing System FIGURE 6-125 3. Unscrew the three screws as show in the picture. FIGURE 6-126 4. Remove the O-Ring and pull out the axis pin. FIGURE 6-127 A5/A3™ Service Manual 046-001141-00 6 - 65...

  • Page 406: Remove The Apl Valve Assembly

    5. Remove the compression spring and replace the two seals (P/N 0030-10-13077) FIGURE 6-129 6.3.17 Remove the APL Valve Assembly Turn the locking ring counterclockwise and pull the APL valve assembly straight up to remove it. 6 - 66 046-001141-00 A5/A3™ Service Manual...
  • Page 407 Repair and Disassembly Disassemble the Breathing System FIGURE 6-130 A5/A3™ Service Manual 046-001141-00 6 - 67...
  • Page 408 Disassemble the Breathing System Repair and Disassembly This page intentionally left blank. 6 - 68 046-001141-00 A5/A3™ Service Manual...

  • Page 409: Replacement Parts

    Replacement Parts Introduction .........................................7-2 A5/A3™ Service Manual 046-001141-00 7 - 1...

  • Page 410: Introduction

    Replacement Parts Introduction The A5/A3 anesthesia system can be broken down into 18 big parts based on its structure and function. Each big part includes several replaceable parts. Tables 8-1 through 8-18 list the information about each replaceable part and Figures 8-1 through 8-14 indicate the position of each replaceable part on the A5/A3.

  • Page 411: Diagrams And Tables

    7.1.2.1 A5/A3 Structure FIG.NO. DESCRIPTION PART NUMBER 115-018165-00(FDA) Auxiliary Gas Outlet Assembly (A5 only) 115-018166-00(Canadian) Auxiliary Gas Outlet Assembly (0633) (A3 only) 801-0633-00002-00 Breathing System 115-025569-00 CO2 Bypass Assembly, A series 115-036378-00 N2O High Pressure Gauge Assembly (0~3500psi) 115-024845-00 and...
  • Page 412 043-003521-00(Canadian) O2 Sensor Cover(Include two covers) 115-016612-00 Vacuum Suction Tube Fixing Clamp 043-003125-00 A5 front panel under work surface 043-000794-00 A3 front panel under work surface 043-001809-00 Front cover of main unit 043-001120-01 Top cover screw paster 047-007458-00 043-003173-00 (A5)
  • Page 413 Nitrous Oxide Yoke Assembly 115-015779-00 (New A5 Only) 801-0631-00073-00(A3 and Original A5) Caster Assembly (right) (A5 only) 115-016956-00 (New A5 Only) Caster Assembly (FRU) (A3 only) 801-0633-00001-00 801-0631-00071-00(A3 and Original A5) Caster Assembly (left) (A5 only) 115-016955-00 (New A5 Only)
  • Page 414 Rear Panel 115-007450-00 Module rack case 115-016480-00 Gas module 6800-30-50842 7.1.2.2 A5/A3 Upper Half Version 1 ORC assembly Version 2 ORC assembly Version 3 ORC assembly one Φ4 connector and one Φ6 one Φ4 connector and one Φ6 two Φ6 connectors...
  • Page 415 Tube of Pressure Gauge (Right) FRU (N2O) 801-0631-00125-00 Flow Control Board PCBA 801-0631-00040-00 Back Pressure Valve 115-039902-00 Gas Mixer Assembly 801-0631-00043-00 Compensate Valve 801-0631-00116-00 Lithium-ion Battery (11.1V, 4500 mAh) 115-018012-00 Exhaust Emission Pipe 115-008426-00 A5/A3™ Service Manual 046-001141-00 7 - 7...
  • Page 416 Auxiliary AC Output Socket (NEMA 5-15) 801-0631-00032-00 Breaker (3.0A) 801-0631-00031-00 Breaker (10.0A) (A5 only) 801-0631-00030-00 Filter Power 250VAC 10A Panel Mount (A5 only) 801-0631-00029-00 Filter (0633) (FRU) (A3 only) 801-0633-00003-00 801-0631-00028-00 Power Board PCBA 801-0631-00025-00 Flow Channel 042-002414-00 Cell battery Lithium-ion 3V35mAh D12.5*2.0...
  • Page 417 Replacement Parts Introduction 7.1.2.4 A5/A3 Work Surface FIG.NO. DESCRIPTION (English) PART NUMBER Docking Station Switch 801-0631-00101-00 Auto/Manual spring 801-0631-00114-00 Auto/Manual pin 801-0631-00113-00 Circuit Heater 115-034450-00 Docking Station Cover 801-0631-00068-00 O2 Connector 801-0631-00067-00 O2 Flush Assembly 801-0631-00044-00 Common Gas Outlet 801-0631-00045-00...
  • Page 418 115-034448-00 APL valve spring tube assembly 115-034449-00 Gas reservoir tube 082-002365-00 Breathing System Switch M90-000162--- 7.1.2.5 A5/A3 Patient Circuit Main Body FIG.NO. DESCRIPTION PART NUMBER Bellows Dome, A series 801-0631-00054-00 Bellows Assembly, A series 0601-30-78968 Airway pressure gauge, A series...
  • Page 419 115-017033-00(8 C) or Bag Arm -Flexible arm assembly 115-028041-00 Bellow check valve membrane weight 0601-20-69772 Test port 043-001285-00 7.1.2.6 A5/A3 Pre-pak Absorber Canister Assembly FIG.NO. DESCRIPTION PART NUMBER CO2 Absorber Hose, A series 801-0631-00092-00 CO2 Absorber Base Drain Valve, A series 801-0631-00112-00...
  • Page 420 Introduction Replacement Parts 7.1.2.7 A5/A3 Valve assembly FIG.NO. DESCRIPTION PART NUMBER Check valve dome, A series 801-0631-00061-00 Valve cover 801-0631-00110-00 Disc 801-0631-00111-00 7 - 12 046-001141-00 A5/A3™ Service Manual...
  • Page 421 Replacement Parts Introduction 7.1.2.8 A5/A3 O2 Cable Assembly FIG.NO. DESCRIPTION PART NUMBER O2 cell cover 801-0631-00090-00 Sensor Oxygen (O2 sensor) Medicel MOX-2 040-001270-00 O2 Cell Cable 801-0631-00091-00 A5/A3™ Service Manual 046-001141-00 7 - 13...
  • Page 422 Introduction Replacement Parts 7.1.2.9 A5/A3 Display Assembly one Φ4 connector and one Φ6 connector two Φ6 connectors Needle valve assembly (115- Needle valve assembly (801-0631- 037561-00) 00020-00) FIG. NO. DESCRIPTION PART NUMBER 801-0631-00020-00(O2,Air) Needle Valve Assembly 115-037561-00(N2O) Knob of N2O Needle Valve...
  • Page 423 047-002234-00 AIR knob overlay(US) 047-002235-00 O2 knob overlay(Canada) 047-002230-00 N2O knob overlay(Canada) 047-002231-00 AIR knob overlay(Canada) 047-002232-00 7.1.2.10 A5/A3 Display Assembly Main Body FIG.NO. DESCRIPTION PART NUMBER Warning Light Board PCBA 801-0631-00019-00 Touch Screen 801-0631-00014-00 Display Exchange Package 801-0631-00075-00 Touch Screen Control Board...
  • Page 424 Introduction Replacement Parts 7.1.2.11 A5/A3 Vaporizer Mounting Minifold FIG.NO. DESCRIPTION PART NUMBER Connector (Vaporizer Mount) 801-0631-00117-00 Valve of Vaporizer Mounting Manifold 801-0631-00106-00 Spring of Vaporizer Mounting Manifold 801-0631-00107-00 Locking plate 041-000166-00 Locking pin 0611-20-45417 Spring, special for vaporizer, S type...
  • Page 425 Replacement Parts Introduction 7.1.2.12 A5/A3 Auxiliary Gas Outlet Assembly FIG.NO. DESCRIPTION PART NUMBER Auxiliary Gas Outlet Fittings (FRU) 801-0631-00122-00 A5/A3™ Service Manual 046-001141-00 7 - 17...
  • Page 426 Connector of Brake (A5 only) 801-0631-00095-00 Indicator Drive Plate (A5 only) 801-0631-00072-00 Principal Axis of Brake (A5 only) 801-0631-00096-00 801-0631-00097-00(Original A5) Base of Chasis Assembly (A5 only) 115-016691-00(New A5 Only) Front Cover for A3 base 043-001808-00 7 - 18 046-001141-00 A5/A3™ Service Manual...
  • Page 427 A5/A3 Auxiliary O2/Air Reference Card 801-0631-00082-00 A series cleaning and disinfection card 115-040734-00 Preventative Maintenance Kit (12 months) 801-0631-00084-00 A3 Periodic Maintenance Kit (36 months) 121-001072-00 A5 Periodic Maintenance Kit (36 months) 121-001061-00 A5/A3™ Service Manual 046-001141-00 7 - 19...
  • Page 428 Tubing.Soft precision PU tubing, 8mmx5.5mm, transparent M6G-020045--- Silicone 20X25mm 082-002356-00 Transparent PU Tube 4*6 M6G-020026--- Tubing. Soft precision PU tubing, 4mmx2.5mm, transparent M6G-020046--- Driving gas spring tube assembly 115-034448-00 APL valve spring tube assembly 115-034449-00 7 - 20 046-001141-00 A5/A3™ Service Manual...
  • Page 429 O-ring (for airway pressure gauge) 801-0631-00118-00 O-ring 16X2 M6M-010058--- for rotating block of breathing circle O-ring 10.72X1.78 082-001524-00 for airway pressure gauge O-ring 0.35X1.78 FKM A70 082-000676-00 Maintenance Kit for O-rings 801-0631-00141-00 Shown A5/A3™ Service Manual 046-001141-00 7 - 21...
  • Page 430 Line cord 009-000094-00 Cable, Breathng System 009-000980-00 Cable, Top Lighting A 009-000982-00 Cable, Display Lighting 009-000986-00 Cable, O2 Pressure Switch 0621-20-69588 Cable, Circuit Switch 0621-20-78593 0633 AC Power Cable (only available for A3) 009-002224-00 7 - 22 046-001141-00 A5/A3™ Service Manual...

  • Page 431: Warranty

    Warranty Warranty Statements....................................8-2 Disclaimers........................................8-3 Manufacturer's Responsibility................................8-3 Phone Numbers and How to Get Assistance..........................8-3 A5/A3™ Service Manual 046-001141-00 8 - 1...

  • Page 432: Warranty Statements

    Mindray DS USA, Inc. ' s option at the factory or at an authorized Distributor, any product which shall under normal use and service appear to the Company to have been defective in material or workmanship.

  • Page 433: Disclaimers

    These operating instructions explain all features of the A5/A3 system and are correct at time of manufacture. Instructions and models produced at a later stage, may contain improvements or modifications that were not included in previous models.
  • Page 434 Phone Numbers and How to Get Assistance Warranty This page intentionally left blank. 8 - 4 046-001141-00 A5/A3™ Service Manual...
  • Page 435 Hoevelaken • The Netherlands • Tel: +31 33 25 44 911 • Fax: +31 33 25 37 621 Mindray (UK) Limited • 3 Percy Road • St. John’s Park • Huntingdon • Cambridgeshire PE29 6SZ • United Kingdom • Tel: 01480 416840 • Fax: 01480 436588 Mindray Medical France SARL •...
  • Page 436 16.0 March 1, 2017 046-001141-00...

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