Page 1 Aespire 7900 Anesthesia Machine Technical Reference Manual...
Page 2 Aespire 7900 Datex-Ohmeda products have unit serial numbers with coded logic which indicates a product group code, the year of manufacture, and a sequential unit number for identification. The serial number can be in one of two formats. AA AX 11111...
Page 3 Aespire 7900 anesthesia machine This document is not to be reproduced in any manner, nor are the contents to be disclosed to anyone, without the express authorization of the product service department, Datex-Ohmeda, Ohmeda Drive, PO Box 7550, Madison, Wisconsin, 53707.
Page 4: Important
The information contained in this service manual pertains only to those models of products which are marketed by Datex-Ohmeda as of the effective date of this manual or the latest revision thereof. This service manual was prepared for exclusive use by Datex-Ohmeda service personnel in light of their training and experience as well as the availability to them of parts, proper tools and test equipment.
Page 5: Table Of Contents
1.3 What is an Aespire 7900 ........
Page 6 2.5 Aespire 7900 Ventilator components ........
Page 7 Table of Contents 3.9 Low-pressure leak test ............3-9 3.9.1 Negative low-pressure leak test .
Page 8 6.2 Aespire 7900 Planned Maintenance ........
Page 9 Table of Contents 7.7 Troubleshooting Flowcharts ..........7-44 7.7.1 Ventilator assessment process .
Page 10 9.22 Aespire 7900 Control/Display module ........
Page 11 Table of Contents 10 Illustrated Parts 10.1 Service tools ............10-3 10.1.1 Software .
Page 12 Aespire 7900 10.20 Electrical enclosure (lower) parts ........10-40 10.21 Display Module .
Page 13: In This Section
1.3 What is an Aespire 7900 ........
Page 14: What This Manual Includes
1.2.1 User’s Reference Some sections of this manual refer you to the User’s Reference manual for the Aespire 7900 anesthesia machine. To expedite repairs, you must have, and be Manuals familiar with, the User’s Reference manual (Part 1 and Part 2) for this product.
Page 15: What Is An Aespire 7900
Configurations available for this product depend on local market and standards requirements. Illustrations in this manual may not represent all configurations of the product. The Aespire 7900 is not suitable for use in an MRI environment. 1.4 Configuration options 1.4.1 Standard The standard configuration includes the following items.
Page 16: System Components
12. APL (adjustable pressure-limiting) valve 13. Bag/Vent switch 14. Bellows assembly 15. Pressure gauge (airway) 16. Sample gas return port 17. Scavenging flow indicator 18. RS-232 Serial port Figure 1-1 • Aespire 7900 anesthesia machine (front view - left side) 02/05 1009-0541-000...
Page 17 5. Vaporizer 6. System switch 7. Pipeline pressure gauge(s) (upper row) 8. Cylinder pressure gauge(s) (lower row) 9. O Flush 10. Auxiliary O flowmeter 11. Suction regulator Figure 1-2 • Aespire 7900 anesthesia machine (front view - right side) 1009-0541-000 02/05...
Page 18 Aespire 7900 1. Circuit Breaker for Electrical Outlets 2. Electrical Outlets 3. Pipeline Connection(s) 4. Cylinder Supplies 5. System Circuit Breaker 6. Mains Inlet 7. Equipotential Stud Figure 1-3 • Aespire 7900 anesthesia machine (rear view) 02/05 1009-0541-000...
Page 19: Symbols Used In The Manual Or On The Equipment
Cautions tell about a condition that can cause damage to the equipment. Read and follow all warnings and cautions. Other symbols replace words on the equipment or in Datex-Ohmeda manuals. No one device or manual uses all of the symbols. These symbols include:...
Page 20 Aespire 7900 Plus, positive polarity Movement in one direction Minus, negative polarity Movement in two directions Variability Read top of float Variability in steps Vacuum inlet This way up Suction bottle outlet Lamp, lighting, illumination Cylinder Lock Isolation transformer Unlock...
Page 21 1 Introduction Alarm silence touch key Volume alarms On/Off touch key End case touch key Menu touch key Circle breathing circuit module Bain/Mapleson D breathing circuit module The primary regulator is set to pressure The primary regulator is set to pressure <...
Page 22 Notes 1-10 02/05 1009-0541-000...
Page 23: Theory Of Operation
2.5 Aespire 7900 Ventilator components ........
Page 24: Theory Overview
Aespire 7900 2.1 Theory overview This section describes: • The flow of gas through the anesthesia machine. • The flow of gas through the breathing system. • Electrical signals between the anesthesia machine, including the breathing system, and the ventilator.
Page 25 2 Theory of Operation Air and N O flow Pipeline or regulated cylinder pressure supplies Air directly to the ventilator (7b for Air drive gas) and the venturi suction (21b for Air drive gas) supply connection. When the system switch (8) is On, air flows to the Air flow control valve (19). Because there is no balance regulator, air flow continues at the set rate during an O supply failure.
Page 26 Aespire 7900 Key to Numbered Components 1. Pipeline pressure gauge 2. Pipeline inlet 3. Cylinder pressure gauge 4. Cylinder inlet (maximum of 3 cylinders) 5. Primary regulator (cylinder pressure) 6. High-pressure relief valve (758 kPa / 110 psi)* 7. Supply connections for the ventilator a.
Page 27 2 Theory of Operation Link 25 Link 25 A. Cylinder Supplies B. Pneumatic Manifold C. Flowmeter Head D. Vaporizer Manifold E. ACGO Select Switch Figure 2-1 • Pneumatic circuit 1009-0541-000 02/05...
Page 28: Physical Connections
Aespire 7900 2.2.2 Physical Figure 2-2 shows the physical path that the gas takes. connections Vent Drive Figure 2-2 • Typical tubing connections - pictorial 02/05 1009-0541-000...
Page 29: Suction Regulators
2 Theory of Operation 2.2.3 Suction regulators Pipeline vacuum The suction regulator (shown in Figure 2-2) uses an external vacuum source. Venturi Drive vacuum The suction regulator (shown in Figure 2-3) uses an internal, venturi derived vacuum source. Drive gas (internally plumbed Air or O ) enters the Venturi Module (VM) at the drive port (A).
Page 30: System Switch
Aespire 7900 2.2.4 System switch The system switch has two positions: On and Standby. In the Standby position The switch: • Turns off the ventilator (electrical). • Stops O and Air to the flowhead (pneumatic). • Without O pressure, the N...
Page 31: Flow Control
2 Theory of Operation 2.2.5 Flow control Needle valves (one for each gas) adjust gas flows. Clockwise rotation decreases flow. Counterclockwise increases flow. Mechanical stops set minimum flows for all gases. The link system sets the maximum ratio of N O to w w w w WARNING The Link 25 Proportioning System sets a minimum O...
Page 32 Aespire 7900 Higher concentrations of O are possible when the link system is not engaged: either by reducing the N O flow below the point of engagement or by increasing O flow above the point of engagement. When the N...
Page 33: Flow Through The Breathing System
2 Theory of Operation 2.3 Flow through the breathing system 2.3.1 Overview of flow This section looks at three types of flow paths. paths • Ventilation paths: How gas flows from the drive source (bag or bellows) to and from the patient. •...
Page 34: Manual Ventilation
Aespire 7900 2.3.2 Manual ventilation Manual inspiration The Bag/Vent switch closes the ventilator path (B)..(Figure 2-4) Gas flows from the bag (1), through the absorber (2), into the breathing circuit module, and through a unidirectional valve (inspiratory check valve) to the patient (3).
Page 35 2 Theory of Operation Manual expiration The Bag/Vent switch keeps the ventilator path closed (B). (Figure 2-5) Gas flows from the patient (4), through a unidirectional valve (expiratory check valve), and into the bag (5). During exhalation, fresh gas flows backwards through the absorber (FG) into the expiratory limb, downstream of the expiratory check valve.
Page 36 Aespire 7900 APL Valve The APL valve sets a pressure limit for manual ventilation. (Figure 2-6) As you turn the APL knob, it puts more or less force on the APL disc and seat (D/S). If the circuit pressure is too high (6), the disc and seat inside the diaphragm opens and vents gas to the scavenging system (7).
Page 37: Mechanical Ventilation
2 Theory of Operation 2.3.3 Mechanical ventilation Mechanical inspiration The Bag/Vent switch closes the manual path (V). Pilot pressure (P) closes the (Figure 2-7) exhalation valve. Drive gas (D) pushes down on the bellows. Gas flows from the bellows (1), through the absorber (2), and through a unidirectional valve (inspiratory check valve) to the patient (3).
Page 38 Aespire 7900 Mechanical expiration Drive-gas flow stops and the exhalation valve opens. Exhaled gas flows from (Figure 2-8) the patient (4), through a unidirectional valve (expiratory check valve) and into the bellows (5). Residual drive gas (D) flows out of the bellows to the scavenging system (6).
Page 39 2 Theory of Operation Pop-off valve The pop-off valve limits the pressure inside the bellows to 2.5 cm H O above (Figure 2-9) the drive gas pressure. This normally occurs when the bellows reaches the top of the housing at the end of exhalation. Excess gas (7) vents to the scavenging system (6) through the pop-off valve and the exhalation valve.
Page 40: Fresh Gas And O
Aespire 7900 2.3.4 Fresh gas and O flush flow To ABS breathing system Fresh gas (1) flows from the vaporizer manifold outlet to the ACGO Selector (Figure 2-10) Switch. With the ACGO Selector Switch in the ABS position, fresh gas flow is channeled to the breathing system.
Page 41 2 Theory of Operation Auxiliary Common Gas Fresh gas (1) flows from the vaporizer manifold outlet to the ACGO Selector Switch. Outlet (Figure 2-11) With the ACGO Selector Switch in the ACGO position, fresh gas flow is channeled to the ACGO outlet.
Page 42: Aespire 7900 Ventilator
Aespire 7900 2.4 Aespire 7900 Ventilator The Aespire 7900 Ventilator is a microprocessor based, electronically- controlled, pneumatically-driven ventilator with built in monitoring systems for inspired oxygen, airway pressure and exhaled volume. The ventilator is designed to be used as a medical device assisting in the delivery of anesthesia and is part of the Aespire Anesthesia Machine.
Page 43: Aespire 7900 Ventilator Components
2 Theory of Operation 2.5 Aespire 7900 Ventilator components Components of the ventilator are found in different locations on the Aespire Anesthesia Machine. The ventilator package consists of: 1. Control Module (Ventilator Display) 2. Pneumatic engine 3. Enhanced Sensor interface board (ESIB) 4.
Page 44: Ventilator Control Electronics
O2 Supply Switch and O2 Flush Switch Connector Board BCID Connector Board Patient Interface Harness Control Module Pneumatic Enhanced Sensor ACGO Ventilator Display Engine Interface Board Oxygen Sensor Figure 2-13 • Aespire 7900 Ventilator functional block diagram (Integrated CPU) 2-22 02/05 1009-0541-000...
Page 45: Control Panel And Display
2 Theory of Operation 2.5.2 Control The control panel on the Aespire 7900 Ventilator is mounted on a folding arm on the left side of the machine. It permits you to grip the panel and push the control buttons panel and display with your thumbs.
Page 46: Enhanced Sensor Interface Board (Esib)
Aespire 7900 2.5.3 Enhanced Sensor The Enhanced Sensor Interface Board (ESIB) for the Aespire 7900 Ventilator is located under the tabletop. Interface Board (ESIB) The ESIB serves as the interface between the ventilator CPU board and the breathing circuit sensors and several machine switches.
Page 47: Electrical
2 Theory of Operation 2.6 Electrical 2.6.1 Block The Aespire 7900 Ventilator electronic/electrical subassemblies or modules include: diagram • Universal power supply (AC to DC converter) • CPU board (with power supply and digital circuits) • Control module (Ventilator display) •...
Page 48: Power Supply
Aespire 7900 2.6.2 Power Aespire machines with a 7900 Ventilator use a universal power supply for AC to DC conversion. The remainder of the power supply functions are derived in the power supply supply circuits on the integrated CPU: • DC to DC step-down converter •...
Page 49: Sealed Lead Acid Battery
2.6.3 Sealed lead A sealed lead acid battery supplies battery backup for the Aespire 7900 Ventilator. The Aespire 7900 Ventilator is not a portable unit. Batteries for the ventilator are used as acid battery back up power in case of a power failure. Thus the battery is in a float charge state most of the time.
Page 50: Cpu Assembly
Aespire 7900 2.6.4 CPU The CPU assembly contains all of the major circuit functions necessary to control ventilator operation, they are part of the digital circuits section of the integrated CPU assembly board. +15V A0-A18, 12-BIT A/D 24-CHANNEL FLASH MEM...
Page 51 2 Theory of Operation System clock An external 32.768 kHz crystal is used with the internal clock synthesizer to generate a 24.12 MHz system clock. Periodic interrupt timer The periodic interrupt timer is the time base for the Real Time Operating System. Software watchdog timer The software controlled internal watchdog timer guards against program execution going astray.
Page 52 Aespire 7900 Program memory Flash memory Two 512K x 8 Flash memory devices are used. This memory contains the real time operating system (RTOS) and software code. The Flash memory devices are socketed. System RAM This memory consists of two 128 K x 16 CMOS static RAMs with on-board expansion capability to 512K x 16 SRAMs.
Page 53: Data Acquisition
DATA acquisition The data acquisition system for the Aespire 7900 Ventilator consists of two major building blocks. The first is an analog to digital converter (ADC) system and the second is a digital to analog converter (DAC) system.
Page 54: Analog To Digital
Aespire 7900 Analog to digital A 24 channel multiplexer and buffer amplifier precedes the A/D converter. The converter System manifold pressure, patient pressure, inspiratory flow and expiratory flow signal inputs to the multiplexer are filtered with an antialiasing filter. Other inputs are filtered by low pass filters.
Page 55 2 Theory of Operation Flow valve control The flow valve control circuit consists of a D/A converter and a voltage to current conversion circuit. D/A conversion The D/A conversion for the flow valve drive circuit is based around the MAX530 12-Bit DAC.
Page 56: Front Panel Display
Aespire 7900 Front panel display All signals to and from the Front Panel are protected from ESD through the use of interface transient suppression devices and appropriate filtering. All of these signals are routed through a single connector from the microcontroller board to the front panel assembly.
Page 57: Enhanced Sensor Interface Board (Esib)
(ABS On/Off in the Aespire 7900), CO bypass switch (wired On in the Aespire 7900), and breathing circuit ID switches (in the Aespire 7900 the circuit ID “switches” are wired to a special configuration so that software knows it is an ABS circle system).
Page 58: Functional Description
Aespire 7900 Functional description Power Supply Regulators The ESIB power supply is a 10 VA limited +12 volt supply originating at the CPU board. It is filtered as it comes onto the ESIB board. There are three regulators on the ESIB that are supplied by the +12 volt supply. The first regulator is a LP2951 low dropout regulator that produces digital +5 volts.
Page 59 2 Theory of Operation Oxygen Sensor Interface The Oxygen sensor connects to the ESIB via a 6 position / 4 pin modular phone jack. The sensor generates a linear output voltage that depends upon the O concentration being measured. The oxygen sensor produces an output of 3 to 15 mV DC in air (21% ).
Page 60 The DPL (drive pressure limit) switch is a pneumatic switch and is used to monitor the airway pressure. (In the Aespire 7900, the DPL switch monitors the Vent Engine manifold pressure to limit patient airway pressure.) It is designed to trip if the airway pressure reaches 104 cm H O nominal.
Page 61: Ventilator Mechanical Subsystems
2 Theory of Operation 2.7 Ventilator mechanical subsystems Refer to Figure 11-1, "System connection block diagram" in Section11, for the complete pneumatic/mechanical subsystem diagram. The mechanical subsystems for the ventilator include: Pneumatic Vent Engine • Drive gas inlet filter • Gas inlet valve •...
Page 62: Pressure Regulator
Aespire 7900 2.7.2 Pressure The pressure regulator (4) is a non-relieving pressure regulator that regulates high pressure filtered supply gas down to 172 kPa (25 psi). regulator (2.0 cm (3.5 cm H2O bias) Inspiratory Flow Control Valve ernate O2 sable Valve...
Page 63: Drive Gas Check Valve (Dgcv)
2 Theory of Operation 2.7.4 Drive Gas The Drive Gas Check Valve (6) is used downstream of the flow control valve to create the pilot pressure for closing the exhalation valve during inspiratory phases, The DGCV Check Valve valve is biased shut by an integral weight that supplies approximately 3.5 cm H O of (DGCV) bias pressure before permitting flow downstream to the breathing circuit.
Page 64: Exhalation Valve
Aespire 7900 2.7.6 Exhalation The exhalation valve contains an elastomeric diaphragm that is used along with the flow valve to control the pressures in the breathing circuit. The exhalation valve valve includes two male ports on the bottom for: • Bellows drive gas (8) •...
Page 65: Mechanical Overpressure Valve
2 Theory of Operation 2.7.7 Mechanical The Mechanical Overpressure Valve (MOPV) is a mechanical valve (14) that operates regardless of electrical power. It functions as a third level of Overpressure Valve redundancy to the ventilator's pressure limit control functions, supplying pressure relief at approximately 110 cm H Vent Engine Atmosphere...
Page 66: Free Breathing Valve
Aespire 7900 2.7.9 Free breathing The free breathing valve (17) helps assure the patient can spontaneously breathe. The ventilator is programmed to supply a specified number of valve breaths per minute to the patient. If, in between one of these programmed cycles, the patient needs a breath (spontaneous), the free breathing valve permits the patient to inhale.
Page 67: In This Section
3 Checkout Procedure In this section 3.1 Ventilator post-service checkout ..........3-2 3.2 Inspect the system .
Page 68: Ventilator Post-Service Checkout
Aespire 7900 3.1 Ventilator post-service checkout After servicing the Aestiva 7900 Ventilator, run the service menu tests that are pertinent to the components replaced. Perform calibration on flow sensors, pressure sensitivity, flow valve and bleed resistor. Then, complete the checkout procedure for the entire machine in the following sections.
Page 69: Pipeline And Cylinder Tests
3 Checkout Procedure 3.3 Pipeline and cylinder tests w w w w CAUTION To prevent damage: • Open the cylinder valves slowly. • Do not force the flow controls. If your system does not use cylinder supplies, do not do steps 2 and 3. 1.
Page 70: Flow Control Tests
Aespire 7900 3.4 Flow control tests w w w w WARNING Nitrous oxide (N O) flows through the system during this test. Use a safe and approved procedure to collect and remove it. 1. Set up the gas scavenging system.
Page 71 3 Checkout Procedure Note: Allow the O monitor to stabilize. At the lower flows, the O monitor may take up to 90 seconds to stabilize. d. If you overshoot a setting, turn the O flow control clockwise until the O flow decreases to the previous setting before continuing the test. Set the N O flow (L/min) Measured O...
Page 72: Pressure Relief Test
Aespire 7900 3.5 Pressure relief test To check the pressure relief valve (vaporizer manifold outlet). 1. Turn all flow controls fully clockwise (minimum flow). 2. Set the ACGO selector switch to ACGO. 3. Connect a gauge or a digital manometer to the ACGO outlet using the positive pressure leak test adapter.
Page 73: Flush Flow Test
3 Checkout Procedure 3.7 Flush flow test 1. Set the Bag/Vent switch to Vent. 2. Set the system switch to Standby. 3. Attach a patient circuit and plug the patient port. 4. Set the ACGO selector switch to ABS. 5. Ensure that the bellows is completely collapsed. 6.
Page 74: Vaporizer Back Pressure Test
Aespire 7900 3.8 Vaporizer back pressure test w w w w WARNING Anesthetic agent vapor comes out of the common gas outlet during this test. Use a safe, approved procedure to remove and collect the agent. 1. Set up the gas scavenging system.
Page 75: Low-Pressure Leak Test
3 Checkout Procedure 3.9 Low-pressure leak test Note Perform either the “Negative low-pressure leak test” or the “ISO or BSI standard low-pressure leak test.” It is not necessary to perform both tests. w w w w WARNING Do not use a system with a low-pressure leak. Anesthetic gas will go into the atmosphere, not into the breathing circuit.
Page 76: Iso Or Bsi Standard Low-Pressure Leak Test
Aespire 7900 3.9.2 ISO or BSI standard low-pressure leak test w w w w CAUTION Do the positive pressure leak test at the ACGO outlet only. 1. Set the ACGO selector switch to ACGO. 2. Turn all flow controls fully clockwise (minimum flow).
Page 77 3 Checkout Procedure 7. Open the O flow control and set a total flow of 0.4 L/min through the flowmeter on the test device. 8. Make sure that the pressure gauge on the test device reads zero and that all other flow controls are fully closed. 9.
Page 78: Alarm Tests
Aespire 7900 3.10 Alarm tests 1. Connect a test lung to the patient connection. 2. Set the Bag/Vent switch to Vent. 3. Set the system switch to On. 4. Set the controls: • Ventilation Mode: Volume control (select from main menu) •...
Page 79 3 Checkout Procedure 11. Test the high airway pressure alarm: a. Set P to less than the peak airway pressure. limit b. Make sure that the high airway pressure alarm occurs. c. Set P to correct level. limit 12. Test the apnea and low airway pressure alarms: a.
Page 80: Breathing System Tests
Aespire 7900 3.11 Breathing system tests w w w w WARNING Objects in the breathing system can stop gas flow to the patient. This can cause injury or death: • Do not use a test plug that is small enough to fall into the breathing system.
Page 81 3 Checkout Procedure Bag Circuit 6. Test the Bag circuit for leaks: a. Set the system switch to On. b. Set the Bag/Ventilator switch to Bag. c. Plug the Bag port (use your hand or the approved test plug). d. Close the APL valve (70 cm H e.
Page 82: Auxiliary O2 Flowmeter Tests
Aespire 7900 3.12 Auxiliary O flowmeter tests 1. Open the O cylinder valve or connect an O pipeline. 2. Rotate the flow control clockwise (decrease) to shut off the flow. The ball should rest at the bottom of the flow tube and not move.
Page 83: Power Failure Test
3 Checkout Procedure 3.14 Power failure test 1. Connect the power cord to a mains outlet. The mains indicator on the display comes on when AC Power is connected. If the indicator is not on, the display assembly is not receiving AC power. •...
Page 84 Notes 3-18 02/05 1009-0541-000...
Page 85: In This Section
Failure to do so may result in patient injury. In this section To ensure proper operation, the Aespire 7900 Ventilator includes several tests that run automatically (self tests) and a series of menu pages that a qualified service person can use to test, calibrate, or troubleshoot ventilator related components in the Aespire machine (Service Mode).
Page 86 4.3.15 Display Battery Status ..........4-25 4.3.16 Test Panel Switches .
Page 87: Self Tests
4 Self Tests and Service Mode 4.1 Self tests The Aespire 7900 Ventilator software includes self tests that determine whether or not the operating software is functioning properly and whether or not the electronic circuits on the circuit boards are functional.
Page 88: Service Mode Confirmation Menu
Aespire 7900 4.2 Service Mode Confirmation menu The service calibration mode tests and/or calibrates hardware necessary to prepare a ventilator manufactured for shipment and to service a ventilator in the field. There are two ways to enter the service mode: •...
Page 89: Main Menu - Service Mode
4 Self Tests and Service Mode 4.3 Main Menu - Service Mode The service mode is entered from the service confirmation menu. Select “Service Mode” and push the adjustment knob. The Service Mode main menu allows navigation to the individual menus for alarm or error logs, calibrations, system configurations, diagnostic tests and tools, and user selected defaults.
Page 90: Alarm Log
Aespire 7900 4.3.1 Alarm Log The Alarm Log displays up to 10 of the most current alarm messages that have been logged. Each log entry shows: • Bootup Count - number (the bootup count is incremented each time the machine is turned on).
Page 91: Error Log
4 Self Tests and Service Mode 4.3.2 Error Log There are two special types of alarms: • Minimum monitoring alarms that stop mechanical ventilation • Minimum system shutdown alarms that stop mechanical ventilation and monitoring. An alarm message that results from these special types of alarms is considered an error alarm.
Page 92: System Configuration
Aespire 7900 4.3.3 System The System Configuration menu includes settings that are tailored to the specific machine. Configuration Figure 4-4 • Calibrations/System Configuration menu 4.3.3.1 Altitude The accuracy of some of the ventilator measurements is altitude sensitive. To ensure the specified accuracy, the altitude setting should be set to the specific altitude where each machine is located.
Page 93 Figure 4-6 • Drive Gas menu item 4.3.3.3 Heliox Mode Aespire 7900 machines can not be configured to deliver Heliox. The Heliox Mode should be set to “Off”. With the Heliox Mode Off, the Setup/Calibration menu will not include the Heliox option.
Page 94 Aespire 7900 4.3.3.4 V Alarm Limits The setting for V Alarm Limits determines how the V Alarm Limits are set: • If V Alarm Limits is set to User Adjustable, the user sets the limits on the Alarm Settings menu.
Page 95 4 Self Tests and Service Mode 4.3.3.5 Language The text shown in the normal mode of operation is language sensitive. However, the majority of service confirmation and calibration modes are shown in English. The other language choices are shown in specific language text with the exception of Japanese which is shown in English.
Page 96: User Select Defaults
Aespire 7900 4.3.4 User Select The User Select Defaults menu determines the control settings used by the system at power up. Defaults Settings related to optional ventilation modes will only appear in the User Select Defaults if the optional modes are active. These settings include: •...
Page 97 4 Self Tests and Service Mode Powerup/End Case Settings If Last Case is selected, the system saves settings when the unit is turned off and powers up with the same settings. If Facility Defaults is selected, the system powers up with the default facility settings and returns to default settings when End Case is selected.
Page 98: Test Cpu And Memory
Aespire 7900 4.3.5 Test CPU and The software checks the CPU, ROM, RAM, and display RAM through this menu. When Start Test is selected the series of tests begins to run. When each Memory test is running, the word “Testing. . .” appears after the test name.
Page 99: Test Eeprom
4 Self Tests and Service Mode 4.3.6 Test EEPROM The software tests all the EEPROM memory via a bit pattern test. It writes a certain pattern to a block of memory and then reads back that block of memory. If the bit pattern that was written is not the same bit pattern that it reads back, the test fails.
Page 100: Test Giv
Aespire 7900 4.3.7 Test GIV To test the GIV (gas inlet valve) the software first closes the GIV. It reads the A/D channel for the GIV. If the A/D channel for the GIV does not read closed, the test fails; otherwise, the test continues.
Page 101: Test Flow Valve
4 Self Tests and Service Mode 4.3.8 Test Flow Valve To test the flow valve the software starts by closing the flow valve. It then opens the flow valve in increments until the flow valve is completely open. At each of the settings of the flow valve the A/D (Analog/Digital) channel for Flow DAC (Digital to Analog Converter) Feedback and Flow Current Sense will be read.
Page 102: Test Drive Pressure Limit Switch
Aespire 7900 4.3.9 Test Drive Pressure The software tests the pressure limit switch to make sure that it trips at the correct manifold over pressure. The software opens the flow valve to a value Limit Switch where pressure continues to increase. It then waits for the DPL (Drive Pressure Limit) switch to trip.
Page 103: Test 5V Fail Alarm
4 Self Tests and Service Mode 4.3.10 Test 5V Fail Alarm A 5-Volt supply (VDD) is used to power the digital circuits throughout the ventilator. The 5-Volt supply (VDD) is derived in the power section of the control board. It is used to power the digital circuits throughout the ventilator.
Page 104: Test Serial Ports
Aespire 7900 4.3.11 Test Serial Ports Two serial port tests may be done: • Public Port Test (Com 2) requires pins 6 and 13 of the external serial connector (located on the left side of the machine) to be jumpered.
Page 105: Breathing System Leak Test
4 Self Tests and Service Mode 4.3.12 Breathing System You can estimate how much of a leak there is in the ventilator portion of the breathing system by closing the patient circuit, inflating the bellows, and Leak Test observing how quickly they fall on their own weight (part of the machine checkout procedure).
Page 106: Display A/D Channels
Aespire 7900 4.3.13 Display A/D The software displays the A/D values for each of the A/D channels. Channels Figure 4-22 • Page 1 of Display A/D Channels menu Figure 4-23 • Page 2 of Display A/D Channels menu Remarks This selection displays a listing of A/D Channels which are at various values depending upon the set parameters.
Page 107 4 Self Tests and Service Mode Table 4-1 A/D Channels A/D Channel Displayed Range Special Instructions Counts Actual Range 1800-2300 Near Zero L/min -120 to 120 L/min Zero Offset Reading (nominal 2050 Inspiratory Flow Counts) 1800-2300 Near Zero L/min -120 to 120 L/min Zero Offset Reading (nominal 2050 Expiratory Flow Counts)
Page 108: Display Discrete I/O Signals
• O Sensor — Connected or Disconnected Breathing Circuit Switches (Circuit module ID) : In Aespire 7900 machines, the switch positions are hard-wired in the ESIB to ABS harness to indicate Circle patient circuit. • Breathing Circuit SW1 — On •...
Page 109: Display Battery Status
4 Self Tests and Service Mode 4.3.15 Display Battery The software displays the battery charge status. This checks the battery charge current. Status N N N N o o o o t t t t e e e e : : : : A negative current value means the battery is charging. B B B B a a a a t t t t t t t t e e e e r r r r y y y y S S S S t t t t a a a a t t t t u u u u s s s s V V V V a a a a l l l l u u u u e e e e s s s s D D D D i i i i s s s s p p p p l l l l a a a a y y y y e e e e d d d d On Battery...
Page 110: Test Panel Switches
Aespire 7900 4.3.16 Test Panel In the Test Panel Switches menu the software is set up to receive keyboard button presses and rotary encoder turns. Switches Press each button and turn the encoder one full turn in both directions. When a button is pressed and held, the icon on the screen next to the button will contain an “x”.
Page 111: Flow Valve Test Tool
4 Self Tests and Service Mode 4.3.17 Flow Valve Test The Flow Valve Test Tool is available for test and troubleshooting purposes only. It allows you to manually control the flow valve setting from 0 (closed) to Tool 120 LPM, in 1 LPM increments, and observe key pressure and flow measurements on the same screen.
Page 112: Adjust Drive Gas Regulator
Aespire 7900 4.3.18 Adjust Drive Gas The Adjust Drive Gas Regulator procedure establishes the required flow rate through the drive gas regulator for proper calibration. Regulator Figure 4-28 • Adjust Drive Gas Regulator menu Remarks The drive gas regulator should provide a constant gas input pressure of 172 kPa (25 psi).
Page 113: O2 Calibrations
4 Self Tests and Service Mode 4.3.19 O Calibrations The O Calibrations take into account the altitude setting. Before starting the calibrations, ensure that the altitude setting (in Calibrations/System Configuration) is set to the appropriate altitude for the machine location. Note: a circle module is required for all calibrations.
Page 114: Calibrate Flow Sensors
Aespire 7900 4.3.20 Calibrate Flow The software calibrates the inspiratory flow, expiratory flow, airway pressure and manifold pressure transducers for zero flow/pressure offset voltage. It Sensors does so by reading the A/D values for inspiratory flow, expiratory flow, airway pressure and manifold pressure when the flow sensor module has been disconnected from the bulkhead connector.
Page 115: Pressure Sensitivity
4 Self Tests and Service Mode 4.3.21 Pressure The software prompts the user to perform the procedure to calibrate the pressure sensitivity. This calibration is not an automated calibration. It Sensitivity prompts the user to follow a set of procedural steps to perform the calibration.
Page 116: Calibrate Flow Valve
Aespire 7900 3. Adjust the APL to read 20 cm H O on the gauge. The flows may jump briefly, but should stabilize to read between +0.5 and -0.5 LPM. 4. Adjust the APL to read 40 cm H O on the gauge. The flows may jump briefly, but should stabilize to read between +0.5 and -0.5 LPM.
Page 117: Bleed Resistor Calibration
4 Self Tests and Service Mode 4.3.23 Bleed Resistor The software calibrates the bleed resistor as described below. Other than the setup procedure, this calibration is completely automated. Calibration Figure 4-34 • Bleed Resistor Calibration menu Calibration procedure 1. Remove the ABS breathing system from the machine. 2.
Page 118: Service Calibrations Required
Aespire 7900 4.3.24 Service The Schedule Service Calibrations menu lists which setting or calibration must be performed when the “Service Calibration ” alarm appears in Calibrations Required normal operation. After the setting or calibration is properly completed, the text for that setting or calibration is removed from the list.
Page 119 4 Self Tests and Service Mode If you select “Yes” you will see the screen displayed in Figure 4-37. Follow the directions on the screen to complete the calibrations. Figure 4-37 • Service Calibration full menu 1009-0541-000 02/05 4-35...
Page 120 Notes 4-36 02/05 1009-0541-000...
Page 121: In This Section
5 Calibration WARNING After adjustments and calibration are completed, always perform the checkout procedure. Refer to Section 3 of this manual. In this section This section covers calibration procedures for components of the Aespire anesthesia machine. 5.1 Primary Regulators ............5-2 5.1.1 Test setup .
Page 122: Primary Regulators
Aespire 7900 5.1 Primary Regulators Follow the procedure in Section 5.1.1 to gain access to the regulators. Then, in Section 5.1.2, select the test that is appropriate for the regulator you are testing. w w w w WARNING When testing/adjusting N O regulators, nitrous oxide flows through the system.
Page 123 5 Calibration Under low flow conditions, the output pressure of a properly adjusted/ functioning regulator should fall within specifications listed in step 4. Under high flow conditions, the output pressure should not drop below the specifications in step 12. 1. Remove the bellows assembly. 2.
Page 124 Aespire 7900 10. High Flow Test: Rotate adjustment knob counterclockwise to obtain 65 (L/min): • While watching the test device press confirm. • After 2 seconds, Set Flow to 0 (L/min) and press confirm to stop the gas flow. • The minimum test device reading observed must be greater than:...
Page 125 5 Calibration 4. Low Flow Test: Set the flow of the gas being tested to 0.05 L/min (or minimum flow for O ). When checking a regulator on systems that have a single flowtube, open the needle valve 1/8 turn from the minimum stop to achieve a flow close to 0.05 L/min.
Page 126: Adjusting Primary Regulators
Aespire 7900 5.1.3 Adjusting Primary Important: Cylinder supplies in an Aespire machine must have all primary regulators set to the same pressure range: (50) Pin Indexed or (60) DIN. If a Regulators regulator is replaced, the replacement regulator must be set (as required) to the same specification as the one removed.
Page 127: Secondary Regulators
5 Calibration 5.2 Secondary Regulators w w w w WARNING When testing N O regulators, nitrous oxide flows through the system. Use a safe and approved procedure to collect and remove it. 5.2.1 Testing/Adjusting 1. Set the system switch to Standby. Secondary Regulators or 2.
Page 128: Flowmeter Needle Valve Calibration
Aespire 7900 5.3 Flowmeter Needle Valve Calibration You need to calibrate a needle valve: • if you install a new one, • if minimum and maximum flows are not within specifications. 5.3.1 O Needle Valve Calibration (Minimum Flow) w w w w CAUTION: Do not force the needle valve against the seat.
Page 129 5 Calibration 7. Turn the collar clockwise until the collar stop tab contacts the minimum stop tab on the valve body. Do not turn the valve stem. Collar Stop Valve Stop Collar Collar stop must be on CCW side of valve stop. 8.
Page 130: N 2 O Needle Valve Calibration (Minimum Flow)
Aespire 7900 5.3.2 N O Needle Valve Calibration (Minimum Flow) w w w w WARNING You must be in a well ventilated room or use a gas evacuation device at this time. Anesthetic vapors exhausted into the room air can be harmful to your health.
Page 131 5 Calibration 7. Slide a stop collar onto the valve stem with the stop tab toward the valve. Do not tighten setscrews. Stop Valve Stop Tab Stop Collar Valve Stem 8. Connect either an N O pipeline or cylinder supply. 9.
Page 132 Aespire 7900 15. Push the stop collar against the valve body. 16. Turn the collar clockwise until the collar stop tab contacts the minimum stop tab on the valve body. Do not turn the valve stem. Collar Stop Valve Stop...
Page 133 5 Calibration 20. Turn the valve clockwise to the minimum stop. 21. Verify there is no flow at the end of the tube. 22. Thoroughly clean the end of the nylon tube and reconnect it to the vaporizer manifold inlet. 23.
Page 134: Air Needle Valve Calibration (Minimum Flow)
Aespire 7900 5.3.3 Air Needle Valve Calibration (Minimum Flow) w w w w CAUTION: Do not force the needle valve against the seat. Overtightening the valve can cause the minimum flow setting to drift out of specifications. 1. Set the system switch to Standby.
Page 135 5 Calibration 10. Turn the needle valve clockwise until the bubble no longer inflates. Do not turn more than 10 degrees clockwise past this point. 10 degrees 11. Push the stop collar against the valve body. 12. Turn the collar clockwise until the collar stop tab contacts the minimum stop tab on the valve body.
Page 136 Aespire 7900 13. Carefully pull the collar back so there is a slight gap between collar and the valve body (but still engages the valve stop). Collar Setscrew (example) 14. Tighten the collar setscrews. Start with the one opposite the tab if possible.
Page 137: Link System Calibration
5 Calibration 5.4 Link system calibration Before you start, make sure that: • All parts are correctly installed. • Stops on needle valves are set correctly. • The machine meets leak check requirements. • Confirm that the O sensor measures 21% in room air and 100% in pure O If not, calibrate the O sensor.
Page 138 Aespire 7900 6. Install the chain and sprockets onto the needle valve stems as an assembly. Press the O knob/sprocket against the O minimum stop collar. Sprocket/Chain Assembly 7. Tighten the setscrews in the O knob. Do not tighten the N O sprocket setscrews.
Page 139 5 Calibration 11. Turn the sprocket on the O knob sprocket assembly counterclockwise until it stops against the tab on the O knob. Do not allow the N O or O valve stems to rotate. Turn counter- clockwise 12. Push the N O sprocket against the plastic spacer.
Page 140 Aespire 7900 16. Install the N O knob. Turn the knob so that the identification label is horizontal before tightening the setscrews. 17. Turn the N O needle valve counterclockwise, and check that the oxygen flow increases as N O flow increases.
Page 141 5 Calibration 20. Check the proportioning system concentration (decreasing O flow). Observe the following precautions: • Turn the N O needle valve to the maximum setting. • Adjust only the O needle valve. • Decrease the O flow as specified in the table and make sure the O concentration is in the allowed range.
Page 142: Airway Pressure Gauge
Aespire 7900 5.5 Airway pressure gauge 5.5.1 Zero the pressure 1. Attach a patient circuit to the Breathing System. Leave the patient end gauge open. 2. Set the Bag/Vent switch to Bag. 3. Adjust the APL valve to maximum. 4. Remove the lens from the pressure gauge: •...
Page 143: Checking The Pressure Gauge Accuracy
5 Calibration 5.5.2 Checking the The accuracy of the airway pressure gauge can be checked by using the following: pressure gauge accuracy • a low-pressure test device (digital manometer or test gauge) with an accuracy of ±2% of reading, • a low-pressure supply source (typically a syringe), •...
Page 144 Notes 5-24 02/05 1009-0541-000...
Page 145: Installation And Maintenance
6.2 Aespire 7900 Planned Maintenance ........
Page 146: Aespire 7900 Installation Checklist
Enter the site altitude in increments of 100 meters. b. Select the correct ventilator drive gas (O or Air). c. Make sure Heliox Mode is set to “Off”. Aespire 7900 machines cannot be configured to deliver Heliox. d. Select the desired V Alarm Limits (Automatic or User Adjustable).
Page 147 6 Installation and Maintenance 7. Complete the System Checkout by performing the following steps: a. Inspect the system (Section 3.2). b. Pipeline and cylinder tests (Section 3.3). c. Flow control tests (Section 3.4). d. Pressure relief test (Section 3.5). e. O supply alarm test (Section 3.6).
Page 148: Aespire 7900 Planned Maintenance
24 month ______________________ This section covers the regular maintenance procedures (minimum requirements) needed to make sure that the Aespire 7900 anesthesia machine — including the ventilator — operates to specifications. 6.2.1 Every twelve (12) Perform the following steps every 12 months.
Page 149: Every Twenty-Four (24) Months
6 Installation and Maintenance 3. From the Service Mode menu, perform the following: • Error Log (Section 4.3.2). If any error codes have been logged, follow the appropriate troubleshooting procedures. Clear the error log. • Display Discrete I/O Signals (Section 4.3.14). Verify proper operation of all switches.
Page 150: Free Breathing Valve Maintenance
Aespire 7900 6.3 Free breathing valve maintenance 1. Unscrew the valve seat ( ) from the side of the interface manifold. 2. Inspect the flapper ( ) and valve seat for nicks, debris and cleanliness. To replace the flapper valve 3.
Page 151: Mopv Pressure Relief Valve Test
6 Installation and Maintenance 6.4 MOPV pressure relief valve test WARNING Objects in the breathing system can stop gas flow to the patient. This can cause injury or death: • Do not use a test plug that is small enough to fall into the breathing system.
Page 152: Auxiliary O2 Flowmeter Tests
Aespire 7900 6.5 Auxiliary O flowmeter tests 1. Open the O cylinder valve or connect an O pipeline. 2. Rotate the flow control clockwise (decrease) to shut off the flow. The ball should rest at the bottom of the flow tube and not move.
Page 153: Integrated Suction Regulator Tests
6 Installation and Maintenance 6.6 Integrated Suction Regulator tests Note There are two types of integrated suction systems for the Avance anesthesia machine: • Continuous Vacuum Regulator, Three-Mode, Pipeline Vacuum • Continuous Vacuum Regulator, Three-Mode, Venturi Derived Vacuum For Pipeline Vacuum systems, a vacuum source of at least 500 mm Hg (67 kPa or 20 in Hg) is required for testing.
Page 154: Regulation Test
Aespire 7900 Regulation Test 1. Turn the mode selector switch to I (ON). 2. Occlude the patient port of the suction regulator. 3. Set the vacuum regulator gauge to 100 mm Hg/13 kPa. 4. Open and close the patient port several times.
Page 155: Troubleshooting
7 Troubleshooting In this section 7.1 General Troubleshooting ........... . .7-2 7.2 Breathing System Leak Test Guide .
Page 156: General Troubleshooting
Aespire 7900 7.1 General Troubleshooting WARNING Objects in the breathing system can stop gas flow to the patient. This can cause injury or death: • Do not use a test plug that is small enough to fall into the breathing system.
Page 157: Troubleshooting
7 Troubleshooting Problem Possible Cause Action Low Pressure Leak Leaking port valve on vaporizer manifold Use the Vaporizer Manifold Valve Tester to check for leak. (with or without vaporizer) See Section 9.9.2 for instructions. If test fails, tighten, repair, or replace as needed. Leak at flowmeter head If vaporizer manifold passed previous tests: Remove tubing from input side of head and occlude...
Page 158: Breathing System Leak Test Guide
Aespire 7900 7.2 Breathing System Leak Test Guide Note Always perform the low-pressure leak test (Section 3.9) on the machine before proceeding with these breathing system leak tests. The procedure in Section 7.2.1 helps you isolate the leak: to Bag Mode components, to Vent Mode components, or to components that are common to both modes.
Page 159: Breathing System Leak Test
7 Troubleshooting 7.2.1 Breathing system This test checks for leaks in Vent Mode and Bag Mode components. It is part of the overall checkout procedure, Section 3.11 “Breathing system tests.” It is leak test repeated here for testing convenience. w w w w WARNING Objects in the breathing system can stop gas flow to the patient.
Page 160 Aespire 7900 Bag Circuit 6. Test the Bag circuit for leaks: a. Set the system switch to On. b. Set the Bag/Ventilator switch to Bag. c. Plug the Bag port (use your hand or the approved test plug). d. Close the APL valve (70 cm H e.
Page 161: Breathing System Troubleshooting Flowcharts
7 Troubleshooting 7.2.2 Breathing System Troubleshooting Flowcharts Start Review Leak Test Guide (Section 7.2) • Do machine low-pressure leak test (Section 3.9) (Section 3.8) • Isolate breathing system leak to Bag Mode,Vent Mode, or Both (Section 7.2.1) Perform Leak Test 1 Verifying the integrity of test tools Perform Test 2...
Page 162 Aespire 7900 Leak in Bag Mode only Perform Test 4 Testing the bag port, Pass APL Valve, and Bag/Vent Switch, and Negative Pressure Relief Valve Re-Install all breathing circuit components and repeat Fail Breathing System Leak Test (Section 7.2.1) Check or Replace...
Page 163 7 Troubleshooting Leak in Vent Mode only Perform Test 6 Pass Testing the bellows assembly, and Bag/Vent Switch Perform Test 8 Inspect Exhalation Valve Testing the bellows and and Drive Circuit bellows Pop-off Fail Pass Re-Install all breathing circuit components and repeat Breathing System Leak Test (Section 7.2.1)
Page 164 Aespire 7900 Leak in both Bag and Vent Mode Common Areas: Flow Sensor Module, Circuit Module, Soda Lime Canister, Negative Pressure Relief Perform Test 9 Testing the Flow Sensor Fail Pass Module, Circuit Module, and Soda Lime Canister Perform Test 13...
Page 165 7 Troubleshooting Leak in Flow Sensor Module or Circuit Module Perform Tests 14 and 15 Testing the Flow Sensors Fail Pass using the low-pressure leak test device Check/Replace Check/Replace the seals Flow Sensors or on the Circuit Module and bulkhead connector the O-Ring on the O cell O-Rings...
Page 166: Leak Isolation Tests
Aespire 7900 7.2.3 Leak Isolation Tests The previous flowcharts refer you to the following tests. These tests require the use of the Low Pressure Leak Test Device and the Leak Test Tool Kit (refer to Section 10.1, "Service tools". The Leak Test Tool Kit includes: •...
Page 167 7 Troubleshooting Test 1 Verifying the integrity of the test tools Machine Test Tool Front View Bulb Thru Port (not connected to airway path) Pressure Sense Port Fresh Gas Port Alignment Post Back View Bulb Thru Port 1. Verify integrity of low-pressure leak test device. •...
Page 168 Aespire 7900 Test 2 Low-pressure leak testing the machine 1. Remove the breathing system from the machine. 2. Attach the Machine Test Tool (using only the Thru Port) and the low- pressure leak test device to Port 3 of the breathing system interface as shown above.
Page 169 7 Troubleshooting Test 3 Testing the airway pressure gauge, and Port 1 and Port 3 u-cup seals Alignment Post 1. Attach the Machine Test Tool to the breathing system interface ports (using the alignment post) as shown above. 2. Turn all of the flow controls fully clockwise (minimum flow). 3.
Page 170 Aespire 7900 Test 4 Testing the bag port cover, the APL valve, the Bag/Vent switch, and the negative pressure relief valve Plug Bag Port 1. Separate the Bellows Module from the Circuit Module and re-install the Bellows Module. 2. Occlude the Bag Port connector.
Page 171 7 Troubleshooting Test 5 Testing the APL diaphram Plug Scavenging Port Plug Bag Port Note If required, set up the Machine Test Tool and breathing system as shown in Test 4. 1. Slide the Bellows Module away from the machine. 2.
Page 172 Aespire 7900 Test 6 Testing the bellows module and the Bag/Vent switch 1. Separate the Bellows Module from the Circuit Module and re-install the Bellows Module. 2. Enter the Service Mode: Push and hold the adjustment knob on the ventilator’s display and set the system switch to On.
Page 173 7 Troubleshooting Test 7 Testing the bellows, the bellows pop-off valve, the bellows base manifold, and the Bag/Vent switch 1. Separate the Bellows Module from the Circuit Module. 2. Insert appropriate test plugs into the bellows base manifold as shown to the left.
Page 174 Aespire 7900 Test 8 Testing the bellows assembly Note If required, set up the Machine Test Tool and breathing system as shown in Test 7. 1. Remove the bellows base manifold from the Bellows Module. 2. Insert appropriate test plugs into the bellows base manifold as shown to the left.
Page 175 7 Troubleshooting Test 9 Testing the flow sensor module, the circuit module, and the soda lime canister Plug 1. Separate the Bellows Module from the Circuit Module and re-install the Circuit/Flow Sensor Module. 2. Connect short tubing between the inhalation and exhalation ports of the breathing system.
Page 176 Aespire 7900 Test 10 Testing the circuit module and the canister 1. Remove the Flow Sensor module. 2. Connect the Circuit Test Tool to the Circuit Module as shown above. 3. Slowly increase the O flow to achieve 30cmH O. The leak rate is equal to the flow required to maintain 30 cmH •...
Page 177 7 Troubleshooting Test 12 Testing the inspiratory side of the circuit module Plug Loop Note: If required, set up the machine as in Test 10 and 11. 1. Connect the Circuit Test Tool to the Circuit Module as shown above. 2.
Page 178 Aespire 7900 Test 13 Testing the negative pressure relief valve 1. Separate the Bellows Module from the Circuit Module. 2. Remove the Bellows Interface Manifold. 3. Insert test plug (recessed end) into the rear Bag/Vent switch port as shown. Plug 4.
Page 179 7 Troubleshooting Test 14 Testing the flow sensors only 1. Remove the Flow Sensor Module. 2. Plug each Flow Sensor as shown above. 3. Connect the low-pressure leak test device to the open end of the Flow Sensor. 4. Block the connector end of the Flow Sensor with your hand. 5.
Page 180 Aespire 7900 Test 15 Testing a flow sensor including the Ventilator Monitoring Assembly and interfacing components 1. Remove Flow Sensors from the Flow Sensor Module. 2. Attach the Flow Sensor to the bulkhead connector. 3. Plug each Flow Sensor as shown.
Page 181: Ventilator Troubleshooting Instructions
7 Troubleshooting 7.3 Ventilator Troubleshooting instructions For ventilator problems that do not generate any error or alarm messages, even though the ventilator may not be functioning correctly: • Refer to section 7.6, Mechanical/electrical troubleshooting guide. For ventilator problems that result in an Alarm or Error message: •...
Page 182: System Error Log
Aespire 7900 7.4 System Error Log The Error Log (Section 4.3.2) displays up to 10 of the most current error messages that have been logged. Error messages include: • Minimum Monitoring alarms that stop mechanical ventilation; • Minimum System Shutdown alarms that stop mechanical ventilation and monitoring.
Page 183: Alarm Messages
7 Troubleshooting 7.5 Alarm messages The Service Mode includes a log of the most recent Alarm messages (Section 4.3.1) experienced by the ventilator system. If a User Alarm persists after the recommended action has been performed, the Service Repair column indicates the probable component and related circuit that needs repair.
Page 184 Aespire 7900 Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Adjust Low User Alarm The audible circuit leak Ve Limit alarm is Off (Alarm menu) but the low VE alarm limit is not set within 50% of measured Ve alarm limit is Off in SIMV or PSVPro modes.
Page 185 Canister User Alarm This alarm should not If occurs, check: open occur in Aespire 7900. • harness to ESIB The open connector sets the canister switch signal • cable from ESIB to CPU board to “closed” by default. Cannot Drive...
Page 186 Aespire 7900 Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Circuit Leak User Alarm Control setting on the This message tells you Audio Off Alarm limit menu. that the audio alarm for circuit leaks was turned off.
Page 187 7 Troubleshooting Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Flow Valve Minimum Incorrect feedback Perform the flow valve test. Failure Monitoring Check the flow current sense from the service (DAC) (*7) (*8) mode Display A/D channels. Should be near zero counts.
Page 188 Aespire 7900 Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria High O2 medium In-range O data > high limit Check O limit. Is actual O higher than limit available and alarm setting? limit not = off Verify O calibration has been done correctly.
Page 189 Monitoring is not Clock Too reliable. (*5) Slow (*6) Invalid User Alarm In the Aespire 7900, the Check: Circuit input to the ESIB is • harness to ESIB Module hard-wired to indicate a • cable from ESIB to CPU board...
Page 190 Aespire 7900 Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Low Paw high In-range Paw data Peak airway pressure < Check the breathing circuit for leaks. available | + 4 for 20 Check flow sensors hoses for leaks.
Page 191 If persists, replace: • CPU board No Circuit User Alarm In the Aespire 7900, the Check: Module input to the ESIB is • harness to ESIB hard-wired to indicate a • cable from ESIB to CPU board...
Page 192 Aespire 7900 Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Paw < -10 high In-range Paw data Paw < -10 cm H Check the breathing circuit. cm H available Perform flow sensor calibration (*9). Alarm condition becomes false.
Page 193 7 Troubleshooting Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Pres/Vol User Alarm Outlet selection switch Mon Inactive is set to auxiliary gas outlet. Connect the patient circuit to the auxiliary gas outlet or set the switch to the common gas outlet for normal operation.
Page 194 Aespire 7900 Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria Sustained high In-range Paw data Paw >= sustained limit Check absorber gage to see if the indicated available for 15 seconds (*10). sustained Paw is present.
Page 195 7 Troubleshooting Message Alarm type/ Enabling Criteria Alarm Condition Service Repair Priority Removal Criteria In-range flow data < V - (bigger of (0.1⋅ Check ventilator settings, is P set too low limit Achieved available or 5 mL)) for 6 for volume setting? mechanical breaths in a Check drive gas.
Page 196: Mechanical/Electrical Troubleshooting Guide
Aespire 7900 7.6 Mechanical/electrical troubleshooting guide The power supply circuits are located on two modules: the AC to DC converters are on a universal power supply (PS), the regulated power circuits are integrated into the CPU board (IntCPU). For power supply test point, refer to Section 7.8.
Page 197 7 Troubleshooting Bellows does not descend 1. Normal 1. If the fresh gas flow is greater than tidal volume, during inspiration. the bellows may not descend. 2. Leak in breathing system. 2. Check for leaks in drive gas circuit. Are twin tube assemblies on the pneumatic engine lifted all the way into the interface cuff? Ventilator will not turn on...
Page 198: Troubleshooting Flowcharts
Aespire 7900 7.7 Troubleshooting Flowcharts 7.7.1 Ventilator assessment process Start Turn on System Is Display w orking? Proceed Review Active Alarms, to “No Display” Troubleshooting Error Log and Alarm Log Section 7.7.2 Diagnosis there achieved? alarms? Use Alarm Troubleshooting Done Section 7.5...
Page 199: No Display Troubleshooting
7 Troubleshooting 7.7.2 No display troubleshooting Start Turn on System Is display dim Was there single but information audio tone on can be seen? power-up? Check Contrast Adjustment Service Mode Is there a continuous or cycling audio tone? Problem continues? Check Display Cable to CPU Connections...
Page 200: Inaccurate Volume Ventilation Troubleshooting
Aespire 7900 7.7.3 Inaccurate volume ventilation troubleshooting Start Verify pass? Calibrate Flow Sensors Section 4.3.20 Section 4 Problem continues? Perform All Calibrations and Re-evaluate Sensor Problem: Problem Examine for defect or water plug continues? in lines. Ensure customer is Done periodically depressing drain button to empty water trap.
Page 201: No Ventilation Troubleshooting
7 Troubleshooting 7.7.4 No ventilation troubleshooting Start Does bellows Does bellows return to top of move? Verify pass? canister? Calibrate Flow Proceed to Sensors "Breathing System Leak" Troubleshooting Section 4.3.20 Section 4 Perform All Check the output Calibrations and of the Drive Gas Regulator Re-evaluate Proceed to Section 4.3.18...
Page 202: High Intrinsic Peep Troubleshooting
Aespire 7900 7.7.5 High intrinsic PEEP troubleshooting Start Problem continues? Verify pass? Calibrate Flow Transducer was out of Sensors calibration Section 4.3.20 Section 4 Proceed to "Inaccurate Volume Ventilation" Troubleshooting Section 7.7.3 Flow from bleed orifice with Intrinsic PEEP Bag/Vent...
Page 203: Power Supply Test Points
7 Troubleshooting 7.8 Power supply test points Black J202 TP214 Integrated TP213 J203 J201 TP209 TP202 TP207 J200 TP201 TP200 +16 V Power +12.5 V Supply +12.5 V Battery Name Typical Value Description +15V +15V Analog +15V supply -15V -15V Analog -15V supply VCHGR +16V...
Page 204 Notes 7-50 02/05 1009-0541-000...
Page 205: Software Installation
8 Software Installation System software resides on two EPROMS (U14 and U23) on the CPU board. To upgrade the software, you must install new EPROMs. • To order software, refer to Section 10.1.1 • To access the CPU board, refer to Section 9.23.1. •...
Page 206 Notes 02/05 1009-0541-000...
Page 207: Repair Procedures
This section covers the repair and replacement procedures for components of the Aespire 7900 anesthesia machine. 9.1 How to bleed gas pressure from the machine ........9-3 9.2 How to remove the rear panels .
Page 208 9.22 Aespire 7900 Control/Display module ........
Page 209: How To Bleed Gas Pressure From The Machine
9 Repair Procedures WARNING To prevent fires: • Use lubricants approved for anesthesia or O equipment, such as Krytox. • Do not use lubricants that contain oil or grease; they burn or explode in high concentrations. • All covers used on the system must be made from antistatic (conductive) materials.
Page 210: How To Remove The Rear Panels
Aespire 7900 9.2 How to remove the rear panels You must remove the rear upper panel to repair or replace many of the machine’s components. To access the 3rd cylinder supply (if equipped) you must remove the lower access panels.
Page 211: How To Remove The Tabletop
9 Repair Procedures 9.3 How to remove the tabletop The tabletop is held in place with five captive screws along the periphery of the pan assembly (accessed from below the rim of the tabletop). • One screw (A) is in a deep recess at the right-rear corner of the tabletop. •...
Page 212: Replace Pipeline Inlet Filter
Aespire 7900 9.4 Replace pipeline inlet filter 1. Remove the pipeline inlet fitting. 2. Pull the pipeline inlet filter out of the fitting. The o-ring should come out with the filter. 3. Install the new pipeline inlet filter in the pipeline inlet fitting. The new filter comes with an o-ring.
Page 213: Change Drive Gas
9 Repair Procedures 9.5 Change drive gas CAUTION If you change the drive gas, you must also change the drive gas selection on the service mode System Configuration setup screen (Section 4.3.3). • If the drive gas selection and the actual drive gas do not agree, volumes will not be correct.
Page 214: Service The Cylinder Supply Modules
Aespire 7900 9.6 Service the cylinder supply modules w WARNING Be careful not to expose internal components to grease or oil (except Krytox or equivalent). 9.6.1 Tightening The cylinder pressure gauge is connected to the cylinder supply through a copper tube with fittings at both ends.
Page 215: Replace Cylinder Inlet Filter
9 Repair Procedures 9.6.3 Replace 1. Open the cylinder yokes. cylinder inlet filter 2. Remove the inlet adapter from the cylinder yoke, using a 4 mm hex wrench. Note: A brass retaining ring keeps the filter inside the inlet adapter. 3.
Page 216: Replace System Switch Assembly
Aespire 7900 9.7 Replace system switch assembly 1. Bleed all gas pressure from the machine (Section 9.1). 2. Ensure that all cylinder and pipeline gauges read zero before proceeding. 3. Remove the tabletop (Section 9.3). 4. Remove the gauge panel mounting screws and move the panel forward to access the system switch.
Page 217 9 Repair Procedures 9. Install the replacement switch assembly: a. Loosen the two outside screws on the electrical module. b. Insert the wires in the electrical module and tighten the screws. c. Pull the wires on the electrical module to ensure that there is a good connection. d.
Page 218: Service The Flowmeter Module
Aespire 7900 9.8 Service the flowmeter module 9.8.1 Remove 1. Bleed all gas pressure from the machine (Section 9.1). front flowmeter 2. Ensure that all cylinder and pipeline gauges read zero before proceeding. panel shield 3. The flowmeter panel is held in place with two latching tabs at the right side. To remove the panel, release each latch by pushing it toward the center of the panel with a thin rod (3-mm hex wrench) through the access hole in the shroud.
Page 219 9 Repair Procedures w w w w WARNING Floats are calibrated to a specific tube. Keep each float with its tube. Replace tube and floats together. Interchanging floats can cause incorrect readings. Disassemble the flowtube assemblies only when service is required. Excessive cleaning can remove the antistatic coating from inside the tube.
Page 220: Remove Complete Flowmeter Head
Aespire 7900 9.8.3 Remove 1. Remove the rear panel (Section 9.2). complete 2. Disconnect the tubing at the rear of each gas module. The following example is a flowmeter head back view of the flowmeter head. Fresh gas out O in...
Page 221: Replace Flowmeter Modules
9 Repair Procedures 9.8.4 Replace 1. Remove the complete flowmeter head (Section 9.8.3). flowmeter 2. Refer to the following illustrations. Note that these illustrations show ANSI flowmeter modules module positions. The order is reversed in ISO machines. /Air modules /Air flowmeter modules are connected at the bottom with a long screw (A) and nut (B) that is recessed.
Page 222 Aespire 7900 Single-tube flowhead The outlet fitting for a single-tube flowhead is not an integral component of the O flowmeter. The outlet fitting is a separate component that includes an o-ring seal and is held in place with two u-clips.
Page 223 9 Repair Procedures Remove g. The O and N O flowmeter modules are held together by a single screw. Remove the screw located on the side of the O flowmeter module. h. Hold the flowmeter modules with the flowtubes facing you. i.
Page 224 Aespire 7900 Sprocket/Chain Assembly 13. Install the N O knob. Snug one set screw to hold the knob in place. 14. Perform the link system calibration (Section 5.4). 15. Install the flowmeter panel shield. 16. Perform the checkout procedure (Section 3).
Page 225: Replace Flowmeter Frame
9 Repair Procedures 9.8.5 Replace 1. Remove the front flowmeter panel shield (Section 9.8.1). flowmeter frame 2. Remove the complete flowmeter head (Section 9.8.3). 3. Separate the flowmeter modules as required (Section 9.8.4). 4. Remove the flowtubes (Section 9.8.2). Keep all the parts for reassembly. 5.
Page 226: Replace O 2 Supply Switch
Aespire 7900 9.8.6 Replace O The O supply switch is located on the O flowmeter’s regulator module. supply switch 1. Remove the upper rear panel (Section 9.2). 2. Remove the two mounting screws from the O supply switch. Adjustment screw 4-mm hex 3.
Page 227: Replace Secondary Regulator Manifold Or Balance Regulator Manifold
9 Repair Procedures 9.8.8 Replace 1. Remove the front flowmeter panel shield (Section 9.8.1). secondary 2. Remove the complete flowmeter head (Section 9.8.3). regulator manifold 3. Separate the flowmeter modules (Section 9.8.4). or balance 4. Remove the flowmeter frame from the regulator manifold by removing the four regulator manifold screws at the rear of the regulator manifold (no need to remove flowtubes).
Page 228: Replace O Or N O Needle Valves (On Machines With N O)
Aespire 7900 9.8.9 Replace O For machines without N O, refer to Section 9.8.10 for replacing the O needle valve. or N O needle 1. Bleed all gas pressure from the machine (Section 9.1). valves (on 2. Ensure that all cylinder and pipeline gauges read zero before proceeding.
Page 229 9 Repair Procedures 15. After calibrating the needle valve, put the spacer the N O needle valve spindle. Spacer 16. Put the chain on the O knob/sprocket assembly and the N O sprocket. 17. Install the chain and sprockets on the needle valve spindles as an assembly. Do not tighten the set screws.
Page 230: Needle Valve On Machines
Aespire 7900 9.8.10 Replace an For machines with N O, refer to Section 9.8.9 for replacing the O needle valve. Air needle valve on 1. Bleed all gas pressure from the machine (Section 9.1). all machines or an 2. Ensure that all cylinder and pipeline gauges read zero before proceeding.
Page 231: Service Vaporizer Manifold Parts
9 Repair Procedures 9.9 Service vaporizer manifold parts 9.9.1 Repair 1. Set the system switch to Standby. manifold port 2. Remove the vaporizers from the vaporizer manifold. valve 3. Using a 14-mm wrench, carefully remove the valve nipple (threaded). 4. Disassemble as necessary to replace parts. The following illustration shows the parts.
Page 232: Checkout Procedure For Manifold Port Valve
Aespire 7900 9.9.2 Checkout Use the Vaporizer Manifold Valve Test Tool to perform the checkout procedure for the manifold port valve. This tool and test procedure are intended for use only when the procedure for valve cartridge assembly is replaced.
Page 233: Replace Vaporizer Manifold Check Valve
9 Repair Procedures 9.9.3 Replace 1. Set the system switch to Standby. vaporizer manifold 2. Remove the vaporizers from the vaporizer manifold. check valve 3. Remove the upper rear panel. 4. Disconnect the tubing from the valve block. 5. Remove the valve block. •...
Page 234 Aespire 7900 Note The valve body, o-ring, and flapper do not come out with the block. They stay intact at the bottom of the vaporizer manifold. 6. Pull the flapper out of the valve body. O-ring Valve body Flapper Valve body...
Page 235: Replace Vaporizer Pressure Relief Valve
9 Repair Procedures 9.9.4 Replace 1. Set the system switch to Standby. vaporizer pressure 2. Remove the vaporizers from the vaporizer manifold. relief valve 3. Remove the upper rear panel (Section 9.2). 4. Using a 13mm open ended wrench, remove the vaporizer pressure relief valve by turning counterclockwise.
Page 236: Replace Vaporizer Manifold
Aespire 7900 9.9.5 Replace 1. Remove the upper rear panel (Section 9.2). vaporizer manifold 2. Remove the front flowmeter shield (Section 9.8.1). 3. Remove the right side panel (A). 4. From the front of the machine, remove the screw (B) at the right upright of the flowhead bezel.
Page 237: Replace Acgo Selector Switch
9 Repair Procedures 9.10 Replace ACGO selector switch Removal 1. Remove the tabletop (Section 9.3). 2. Clip the tie wraps ( ) from the outlet barb fittings at the side of the switch. 3. Disconnect the fresh gas ( ) and flush ( ) tubes at the back of the switch.
Page 238 Aespire 7900 5. Place the shroud over the knob and guide the assembly into the pan opening. 6. Ensure that the indicators on the shroud align with label on the pan and the alignment tab mates with the alignment hole in the pan.
Page 239: Clean Or Replace Acgo Port Flapper Valve
9 Repair Procedures 9.11 Clean or replace ACGO port flapper valve 1. Remove the tabletop (Section 9.3). 2. Remove the ACGO cap mounting screws. 3. Remove the cap. 4. Examine the flapper and disk for obstructions or debris. Clean with isopropyl alcohol if necessary;...
Page 240: Reconfigure Sample Gas Return Line
Aespire 7900 9.12 Reconfigure sample gas return line Sample gas return is directed to the scavenging system as a factory default. Perform the following to reroute the sample gas back to the breathing system. Refer to “Tubing” on page 11-7.
Page 241: Replace The Apl Valve
9 Repair Procedures 9.13 Replace the APL valve 1. Remove the ABS breathing system. 2. The APL valve is held in place with a spring and a retainer (A) that snaps into a recess in the lower body of the APL valve.
Page 242: Replace The Bag Support Arm
Aespire 7900 9.14 Replace the bag support arm 1. Remove the ABS breathing system from the machine. 2. From the underside of the casting, remove the two screws/ lockwashers (A) that hold the arm in place. • If either of the pins (see below) remain in the casting, remove them from the casting.
Page 243: Servicing The Bag Support Arm
9 Repair Procedures 9.14.1 Servicing Service parts for the bag support arm include the upper and lower assemblies. the bag support To replace either assembly: 1. Remove the bag support arm from the machine (Section 9.14). 2. To separate the upper assembly from the lower assembly, use a small (2.5-mm) pin punch from the bottom to drive the dowel pin up and...
Page 244: Replace Friction Pad In Lower Bag Arm Assembly
Aespire 7900 9.14.2 Replace 1. Remove the ABS breathing system from the machine. friction pad in 2. Using an 8-mm socket, remove the lower bag arm nut (A), shoulder washer, and spring assembly from the lower assembly. 3. Lift the bag support arm off of the swivel post.
Page 245: Replace Bag Port Housing
9 Repair Procedures 9.14.3 Replace 1. Remove the bag support arm bag port housing cover (A) — screw and lockwasher from below. 2. Remove nut (B) to remove the release lever (C). 3. Remove the retaining ring (D). 4. Slide the bag port housing (E) off the end of the bag support arm.
Page 246: Replace Auxiliary O
Aespire 7900 9.15 Replace auxiliary O flowmeter 1. Bleed all gas pressure from the machine (Section 9.1). 2. Ensure that all cylinder and pipeline gauges read zero before proceeding. 3. Remove the tabletop (Section 9.3). 4. Remove the adjustment knob from the flowmeter; pull forward.
Page 247: Replace The Suction Control Module
9 Repair Procedures 9.16 Replace the suction control module The suction control module can be replaced by removing the front panel, along with the ABS and the tabletop, to gain access. Alternatively, if the situation warrants, the suction control module can be accessed by removing the rear panel. 9.16.1 Front panel 1.
Page 248 Aespire 7900 9.16.2 Rear panel 1. Lower the upper rear panel (Section 9.2). method 2. Disconnect the white (A) vacuum and black (B) suction fittings from the rear panel. Do not remove the tubing from the regulator. 3. If you are replacing a venturi drive suction control module, disconnect the tube (C) from the pilot valve adapter.
Page 249: Replace Abs Breathing System Components
9 Repair Procedures 9.17 Replace ABS breathing system components 9.17.1 Replace 1. Remove the ABS breathing system. Bag/Vent switch 2. From the underside, remove the bellows base manifold (A) and fully loosen the two assembly captive screws (B) at the bag port side of the APL/BTV manifold. 3.
Page 250: Replace Bellows Base Latch Assembly
Aespire 7900 9.17.2 Replace To replace the latch assembly, you must disassemble the bellows base assembly to the point where you can remove the guide (A) and latch assembly (B) as a unit. bellows base latch assembly 1. Remove the Bag/Vent switch cartridge (Section 9.17.1).
Page 251: Replace Casters
9 Repair Procedures 9.18 Replace casters WARNING Replacing a caster requires at least two people to maneuver and tip the machine. Personal injury and/or machine damage is possible if one person attempts this procedure alone. 1. Disconnect all pipeline hoses from the wall and the machine, close all gas cylinders, unplug the power cord, and set the system switch to standby.
Page 252: Replace Task Light And Switch
Aespire 7900 9.19 Replace task light and switch Remove the four screws (A) that hold the task-light lens to the upper shelf. 9.19.1 To replace 1. Using a small needle-nose pliers, disconnect the switch harness from the task-light the task-light circuit board connector (B).
Page 253: Replace The Display Cable (Long Arm)
9 Repair Procedures 9.20 Replace the display cable (long arm) Display cable replacement requires that you first remove the display arm from the dovetail extrusion. Before replacing the display arm, note the routing of the cable. After replacing the display arm, ensure that the cable is dressed properly and does not interfere with the motion of the display arm.
Page 254: Installing The Long Arm
Aespire 7900 9.20.3 Installing 1. Place the arm into the extrusion. the long arm 2. Use a rubber mallet to tap the arm into place. Leave a 12-mm gap between the lower edge of the arm mounting plate and the end of the dovetail.
Page 255: Replace The Display Cable (Folding Mount)
9 Repair Procedures 9.21 Replace the display cable (folding mount) Display cable replacement requires that you first remove the folding mount from the dovetail extrusion. Before replacing the folding mount, note the routing of the cable. After replacing the folding mount, ensure that the cable is dressed properly and does not interfere with the motion of the display arm.
Page 256: Installing The Folding Mount
Aespire 7900 9.21.3 Installing 1. Place the folding mount into the extrusion. the folding mount 2. Slide the bracket down until the Flush plate is flush with the top of the dovetail. 3. Tighten the mounting screws to secure the display arm.
Page 257: Aespire 7900 Control/Display Module
9 Repair Procedures 9.22 Aespire 7900 Control/Display module To remove the control module: 1. Disconnect the cable. 2. Remove the screws that attach the control module to the mounting brackets. 3. Remove the control module and place it on a static control workstation.
Page 258: Encoder Switch
Aespire 7900 9.22.2 Encoder switch 1. Encoder switch with harness 2. Locking washer 3. Flat washer 4. Mounting nut 5. Control knob To replace the encoder switch: 1. To access the encoder switch, follow the disassembly instructions in Section 9.22.1.
Page 259: Alarm Speaker
9 Repair Procedures 9.22.3 Alarm speaker To replace the alarm speaker: 1. To access the speaker, follow the disassembly instructions in Section 9.22.1. 2. Remove the two screws holding the alarm speaker to the housing. 3. Install the new alarm speaker using the previously removed screws. 4.
Page 260: Electrical Enclosure Components
Aespire 7900 9.23 Electrical enclosure components w WARNING Disconnect the power cord from the outlet receptacle before attempting to remove or repair any circuit board to avoid shock hazard. w CAUTION Disconnect the internal battery before attempting to remove or repair any circuit board.
Page 261 9 Repair Procedures 9.23.1 CPU Board w CAUTION The circuit boards are electrostatic sensitive. Use an anti-static workstation and wear a wrist grounding strap when handling a circuit board. 1. Disconnect the four cable connectors from the bottom of the CPU board. 2.
Page 262: Firmware Replacement Procedure
Aespire 7900 9.23.2 Firmware replacement procedure w CAUTION The circuit board and EEPROMs are electrostatic sensitive. Use an approved static control workstation and wrist grounding strap. 1. Place the CPU board on an approved static control workstation. 2. Note the label and orientation of each EEPROM to ensure they are properly transferred to the replacement board.
Page 263: Power Supply
9 Repair Procedures 9.23.3 Power supply CAUTION The circuit boards are electrostatic sensitive. Use an anti-static workstation and wear a wrist grounding strap when handling a circuit board. 1. Line power 2. Chassis ground 3. Power output 4. Disconnect the line power inlet connector (1) and the ground wire (2). 5.
Page 264: Battery
Aespire 7900 9.23.4 Battery The battery is mounted on the back plate of the lower electrical enclosure. 1. Battery cable 2. Battery 3. Battery retainer 4. Disconnect the battery cable by pressing the lock tabs on either side of the connector and gently pulling on the connector.
Page 265: Replace Cpu Cables
9 Repair Procedures 9.23.5 Replace The four cables from the top edge connectors of the CPU board pass into the pan area through a cable raceway: CPU cables • Display cable • Vent engine cable • ESIB cable • Machine switches cable (splits into three segments). To replace these cables, you must remove the tabletop (Section 9.3).
Page 266: Servicing The Vent Engine
Aespire 7900 9.24 Servicing the Vent Engine The Vent Engine is found in a housing located below the breathing system bellows assembly. The Vent Engine includes the following subassemblies. • Vent Engine Connector board (1) • Gas Inlet Valve Assembly (2) •...
Page 267: To Remove The Vent Engine
9 Repair Procedures 9.24.1 To remove 1. Disconnect pipeline supplies; close cylinder valves; bleed off pressure. the Vent Engine 2. Remove the ABS breathing system. 3. Remove the Exhalation valve. 4. Remove the scavenging downtube. 5. Loosen the five captive screws ( ) that hold the Vent Engine cover to the housing.
Page 268: Replacing Vent Engine Components
Aespire 7900 9.24.2 Replacing Refer to Section 6 for Vent Engine components that are to be serviced under regular maintenance. Most of the components on the Vent Engine can be replace by removing Vent Engine the mounting screws and remounting the replacement part in place.
Page 269: Replacing Giv Components
9 Repair Procedures 9.24.3 Replacing Lubricate items marked with and asterisk (*) sparingly with Krytox. GIV components 1. Remove the retaining ring (A) and the GIV cap (B). 2. Use pneumatic pressure to remove the shuttle. Cover the shuttle with a cloth and briefly apply pressure (connect the drive gas hose or use pipeline pressure) through the drive gas inlet.
Page 270 Notes 9-64 02/05 1009-0541-000...
Page 271 10 Illustrated Parts In this section 10.1 Service tools ............10-3 10.1.1 Software .
Page 272 Aespire 7900 10.19 Breathing System ........... . . 10-31 10.19.1 APL Valve .
Page 273: Illustrated Parts
10.1 Service tools 10.1.1 Software Item Description Stock Number U14/U23 Aespire 7900 Rev 4.6 Basic 1009-8435-000 Aespire 7900 Rev 4.6 PSVPro 1009-8437-000 10.1.2 Secondary Assemble the secondary regulator pilot pressure tool using a 4-mm tee and tubing as shown. This tool is used with N O needle valve calibration.
Page 274: Test Devices
Aespire 7900 10.1.3 Test Devices Item Tool Stock Number Test flowmeter, 6–50 L/min (Suction Flow Test) 1006-8431-000 Not Shown Low-pressure Leak Test Device (negative pressure) 0309-1319-800 Low-pressure Leak Test Device (positive pressure - ISO) 1001-8976-000 Low-pressure Leak Test Device (positive pressure - BSI) 1001-8975-000 Flow test device capable of measuring 0–15 L/min...
Page 275: Test Tools
10 Illustrated Parts 10.1.5 Test Tools Item Tool Stock Number Leak Test Tool Kit, ABS breathing system 1407-7013-000 Test Tool, bulkhead 1407-8500-000 Plug, tapered 27x12 mm 1407-8505-000 Plug, tapered 24x18 mm 1407-8506-000 Test Tool, circle module (2 each) 1407-8502-000 Plug, service B/S 11 mm (2 each) 1407-8504-000 Plug, service BTV 18 mm (2 each) 1407-8503-000...
Page 276: External Components - Front View
Aespire 7900 10.2 External components - front view 4 (5, 6) 16, 17 18, 19 12 (13) 10 (15, 13) 14 (13) Item Description Stock Number Caster, 125-mm with brake (front) 1006-3070-000 Caster, 125-mm no brake (rear) 1006-3071-000 Cover, cable channel...
Page 277: External Components - Front View References
10 Illustrated Parts 10.3 External components - front view references Item Description Section number “Serial board” Refer to section 10.31 “AGSS gauge, and sample return” Refer to section 10.31 “Vent Engine Housing” Refer to section 10.22 “Anesthetic Gas Scavenging System — AGSS” Refer to section 10.28 “Breathing System”...
Page 278: External Components - Rear View
Aespire 7900 10.4 External Components - rear view Item Description Stock Number AC Inlet Refer to section 10.11 Pipeline Inlets Refer to section 10.13 Cylinder Gas Supplies Refer to section 10.14 Electrical Power Outlet Refer to section 10.12 Suction items Refer to section 10.29...
Page 279: Front Panel, Gauges And System Switch
10 Illustrated Parts 10.5 Front panel, gauges and system switch Item Description Stock Number Stock Number Stock Number (pipeline) (cylinder) Panel, gauge front 1009-3018-000 Switch, D-O system 1006-8452-000 Gauge, low pressure (includes mounting hardware) 1009-3079-000 Connector, 1/8 inch Legris to 10-32 1006-3711-000 Gauge, high pressure (includes mounting 1009-3080-000...
Page 280: Rear Panel Components
Aespire 7900 10.6 Rear panel components 2 (3) 8 (9) 14 (15, 16) 6 (7) 13 (15, 16) 10 (9) 12 (9) 11 (9) Item Description Stock Number Cover, rear upper 1009-3073-000 Cap, hose reel 1009-3075-000 Screw, M5.5x20 1009-3384-000 Strap, hook/loop 1009-3233-000 Screw, M6x1.0 captive...
Page 281: Tabletop Components
10 Illustrated Parts 10.7 Tabletop components 10 (11, 12) 4 (3) 2 (3) Item Description Stock Number Tabletop, work surface 1009-3029-000 Screw, relieved M4x12 1504-3001-000 Washer, retainer 1009-3178-000 Screw, relieved M4x16 1011-3980-000 Clip (used with bag arm) 1009-3142-000 Clip (used with bag on hose) 1009-3139-000 Window, check-valve 1009-3088-000...
Page 282: Right-Side Components
Aespire 7900 10.8 Right-side Components 2 (3) Item Description Stock Number Extrusion cover 1009-3021-000 Screw, M6x20 0144-2131-921 Lockwasher, M6 internal 0144-1118-130 Dovetail, RH upright 1009-3129-000 Screw, M4x10 self-tapping 1009-5534-000 Cover, pipeline inlet 1009-3091-000 Screw, M4x8 1006-3178-000 10-12 02/05 1009-0541-000...
Page 283: External Components - Lower Assembly
10 Illustrated Parts 10.9 External components - lower assembly 1 (3) 10 (11, 12) 13 (8, 9) 2 (3) 7 (8, 9) 4 (5) Item Description Stock Number Panel, access 1009-3059-000 Panel, service 1009-3141-000 Screw, M4x8 1006-3178-000 Thumbscrew 1406-3304-000 Ring, retaining 1406-3319-000 Cover, scavenger reservoir 1009-3027-000...
Page 284: Drawer
Aespire 7900 10.10 Drawer 5 (6) 4 (6) Item Description Stock Number Slide, drawer 1009-3084-000 Screw, M4x8 Nyloc 1009-3183-000 Drawer, body 1009-3078-000 Drawer Front, lower (down arrow) 1009-3032-000 Drawer Front, upper (up arrow) 1009-3031-000 Screw, M4x12 1009-3109-000 10-14 02/05 1009-0541-000...
Page 285: Ac Power Cords
10 Illustrated Parts 10.11 AC Power cords Item Description Stock Number Power Cord Australia and China, 220-240 VAC AS 3112 outlets 1006-3888-000 EURO and France, 220 VAC with CEE 7/7 1001-3380-000 India and South Africa, 220-240 VAC BS546 1006-3885-000 Japan and US, 100-120 VAC NEMA 1006-3907-000 Peru, 220-240 VAC NEMA 1006-3889-000...
Page 286: Ac Inlet/Outlet Components
Aespire 7900 10.12 AC Inlet/Outlet Components Item Description Stock Number Inlet, 100/120 AC, with line filter and 15 A circuit breaker 1009-5698-000 Inlet, 220/240 AC, with line filter and 8 A circuit breaker 1009-5757-000 Fuse, 5A - 5x20mm 1009-5779-000 Fuse holder...
Page 287 10 Illustrated Parts (12, 13) 14, 15 AS 3112 Australia/China Nema 5-15 Japanese CEE 7/7 SEV 1011 EURO Swiss, CEE 7/4 BS1363 France BS 546 Nema 5-15 India and South Africa 1009-0541-000 02/05 10-17...
Page 288: Pipeline Inlet Fittings
Aespire 7900 10.13 Pipeline inlet fittings Item Description Stock Number Pipeline inlet - O fittings -------------------- Body, O DISS 1006-5149-000 Body, O NIST 1006-5158-000 Body, O 1006-5161-000 Body, O G 3/8 BSPP 1006-5170-000 Pipeline inlet assembly O France 1006-8363-000 Pipeline inlet assembly O...
Page 289: Cylinder Gas Supplies
10 Illustrated Parts 10.14 Cylinder Gas Supplies Item Description Pin Index (Inboard) DIN (Inboard) DIN, Large Cylinder (Inboard) Gas supply O 1006-3201-000 1006-3207-000 1006-3880-000 Gas supply N 1006-3202-000 1006-3208-000 1006-3881-000 Gas supply Air 1006-3203-000 1006-3209-000 - - - - - Item Description Stock Number...
Page 290 Aespire 7900 10.14.1 Cylinder inlet fittings 2 DIN (external cylinder) 1 Pin Index Item Description Stock Number Cylinder inlets (Pin Index) --------------------- Gasket 0210-5022-300 O-ring 9221-3013-116 Adapter, inlet 1001-4075-000 Filter, sintered bronze 9914-6380-000 Retaining ring, filter 1001-5954-000 Cylinder inlets (DIN)
Page 291: Vaporizer Manifold
10 Illustrated Parts 10.15 Vaporizer manifold Item Description Stock Number Manifold assembly, complete, two position 1006-8355-000 Manifold assembly, complete, one position 1009-8065-000 O-ring, 0.687 inch ID 0.812 inch OD 0210-0544-300 Spring, compression 1006-3736-000 Valve kit, includes seal 1006-8373-000 Seal 1006-3690-000 O-ring, 14.3 mm ID 1102-3043-000 (Package of 6 o-rings)
Page 292: Flowmeter Components
Aespire 7900 10.16 Flowmeter components Single-tube Flowhead Outlet 10 (5*) 9*** Item Description Stock Number Flowhead Module: includes regulator (O and N O), flowtube module, ------------------- flowtubes, needle valve, intermodule tube and associated o-ring, and label plate; does not include labels, link-25, or knobs (order separately).
Page 293 10 Illustrated Parts Item Description Stock Number Flowtube Module: includes housing, o-rings, and plug ball; does not include, --------------------- flowtubes, label or label panel (order separately). Flowtube module, O - dual 1006-8338-000 Flowtube module, O - single 1009-8234-000 Flowtube module, N O - dual 1006-8337-000 Flowtube module, N...
Page 294: Flowtube Parts
Aespire 7900 10.16.1 Flowtube parts Item Description Stock Number Large flowtube kits (includes float, filter, o-rings, tube) --------------------- Flowtube kit, Air, large 1006-8325-000 Flowtube kit, N O, large 1006-8329-000 Flowtube kit, O , large 1006-8331-000 Small flowtube kits (includes float, filter, o-rings, tube)
Page 295 10 Illustrated Parts 1009-0541-000 02/05 10-25...
Page 296: Secondary Regulator Components
Aespire 7900 10.16.2 Secondary regulator components Item Description Stock Number Knob (N O) (Air) without label 1006-3633-000 Proportioning assembly 1006-8339-000 (includes knob, sprocket, set screws, without knob label) Set screw 0141-4227-105 Proportioner chain 1006-3610-000 Sprocket, N 1006-3625-000 Spacer, link system, N...
Page 297 10 Illustrated Parts 1009-0541-000 02/05 10-27...
Page 298: Abs To Machine Interface Components
Aespire 7900 10.17 ABS to machine Interface Components 17 (9) 10 (11) Item Description Stock Number Enhanced Sensor Interface board (ESIB) 1503-7014-000 Cables and harnesses Refer to section 10.27 Screw, M4x8 POZI-DR PAN SST TYPE 316 1006-3178-000 Flush Valve Refer to section 10.17.1 ACGO Selector Valve Refer to section 10.17.1...
Page 299: Flush Valve And Acgo Selector Switch
10 Illustrated Parts 10.17.1 Flush Valve and ACGO Selector Switch (9b) 7 (8) 2 (3, 4) Item Description Stock Number Flush valve, without button 1006-8357-000 Flush Button with rod 1011-3354-000 Spring 1006-3186-000 E-clip 0203-5225-300 Bracket 1011-3355-000 Screw, M4x8 1006-3178-000 Screw, M4x12 0140-6226-111 Lockwasher, M4 9213-0540-003...
Page 300: Breathing System Interface
Aespire 7900 10.18 Breathing system interface (21, 22) 13 (11, 12) 9 (11*, 12) 13 (11*, 12) 6 (7, 8) 3 (4) 10 (11*, 12) 14 (15) Item Description Stock Number Assembly, main support casting 1407-7010-000 Bolt, M6x16 flange 1009-3125-000...
Page 301: Breathing System
10 Illustrated Parts 10.19 Breathing System 10.19.1 APL Valve 20 (21) 20 (21) 16 (17) 4, 5, 6 (19) 11 (12) Item Description Stock Number APL Valve Assy (includes items 2 through 6) 1009-8200-000 SPRING CPRSN 53.14 OD 36.8 L 1.48 N/MM 1406-3328-000 RETAINER SPRING APL 1407-3404-000...
Page 302: Bag/Vent Switch
Aespire 7900 10.19.2 Bag/Vent Switch Item Description Stock Number BTV Switch Cartridge 1407-7003-000 COVER BTV 1407-3500-000 SCR SEMS M4X8 BT SKT HD W/EXT L/W SST 316 0144-2436-108 O-RING 44.02 ID 51.1 OD 3.53 W SI 70 DURO 1407-3507-000 SEAL, BTV...
Page 303: Absorber Canister
10 Illustrated Parts 10.19.3 Absorber canister Item Description Stock Number Absorber Canister, Reusable 1407-7004-000 Canister, CO 1407-3200-000 O-RING 110.72 ID 117.78 OD 3.53 W EPR 50 DURO 1407-3204-000 Foam, CO Canister (PKG 40) 1407-3201-000 Cover assembly, CO canister 1009-8240-000 1009-0541-000 02/05 10-33...
Page 304: Flow Sensor Module
Aespire 7900 10.19.4 Flow Sensor Module Item Description Stock Number Flow Sensor Module (does not include Item 1) 1407-7001-000 Flow Sensor (plastic) 1503-3856-000 Flow Sensor (metal - autoclavable) 1503-3244-000 COVER FLOW SNSR 1407-3000-000 HOLDER FLOW SNSR UPPER 1407-3002-000 HOLDER FLOW SNSR LOWER...
Page 305: Breathing Circuit Module
10 Illustrated Parts 10.19.5 Breathing Circuit Module 4, 5 6 (11) 13, 11 Item Description Stock Number Breathing Circuit Module (*) 1407-7002-000 LENS CIRCUIT CHK VALVES 1407-3101-000 O-RING 44.02 ID 51.1 OD 3.53 W SI 70 DURO 1407-3507-000 Check Valve Assembly 1406-8219-000 3a RETAINER DISK 26.97D 12.7H 0.76T 1400-3017-000...
Page 306: Exhalation Valve
Aespire 7900 10.19.6 Exhalation valve 5 (6) Item Description Stock Number Exhalation Valve Assy 1407-7005-000 BASE EXHALATION VALVE 1407-3700-000 DIAPHRAGM ASSY EXH VALVE 1503-8121-000 SEAT EXHALATION VLV ABS 1407-3704-000 COVER EXHALATION VALVE 1407-3701-000 SCR M4X16 PH PAN HD SST TYPE 316 9211-0440-163 O-RING 2.9 ID 6.46 OD 1.78 W EP 70 DURO...
Page 307: Bellows
10 Illustrated Parts 10.19.7 Bellows Item Description Stock Number Bellows housing 1500-3117-000 Bellows 1500-3378-000 1500-3351-000 Pressure relief valve assy 1500-3377-000 Latch, base 1500-3352-000 Seal, base 1500-3359-000 Base, bellows Refer to section 10.19.8 Manifold, bellows base 1407-3702-000 1009-0541-000 02/05 10-37...
Page 308: Bellow Base
Aespire 7900 10.19.8 Bellow base Item Description Stock Number Bellows Base Assy 1407-7006-000 1a Latch Assy 1407-7007-000 HOOK LATCH 1407-3604-000 E-Ring 0203-5225-300 10-38 02/05 1009-0541-000...
Page 309: Bag Arms
10 Illustrated Parts 10.19.9 Bag Arms Item Description Stock Number Bag Arm Assembly (complete) 1009-8159-000 Bag Arm Upper Assembly 1407-7011-000 Cover, bag port housing 1407-3807-000 Screw, M3x20 0140-6719-103 Lockwasher, M3 internal 9213-0430-003 Housing, bag port 1407-3806-000 Lever, lock release 1407-3808-000 Ring, retaining 1406-3577-000 Nut, M3 Nyloc...
Page 310: Electrical Enclosure (Lower) Parts
10.20 Electrical enclosure (lower) parts Item Description Stock Number PCB, CPU (integrated), Service (without EPROMS) 1006-8285-000 EPROM Kit, U14 and U23, Aespire 7900 Refer to section 10.1.1 Battery pack 1503-3045-000 Fuse, battery, 4A 5x20 time delay 1503-3074-000 Power supply, Service...
Page 311 10 Illustrated Parts 10 (11) 1009-0541-000 02/05 10-41...
Page 312: Display Module
Aespire 7900 10.21 Display Module 10.21.1 Rear housing parts Item Description Stock Number Speaker assembly, with leads 1503-3106-000 Connector board 1006-3682-000 Harness, connector board to front panel board (50 pin) 1503-3052-000 Rear housing, vent control display 1006-1242-000 Bracket, connector board mount...
Page 313: Front Housing Parts
10 Illustrated Parts 10.21.2 Front housing parts Item Description Stock Number Harness, connector board to front panel board (50 pin) 1503-3052-000 Harness, display-keyboard with ferrite (20 pin) 1605-3072-000 Knob, soft touch, teal green 1006-4622-000 Rotary encoder, with cable and mounting hardware 1503-3012-000 Keyboard, front panel vent control display 1006-1325-000...
Page 314: Vent Engine Housing
Aespire 7900 10.22 Vent Engine Housing 13 (14, 15) Item Description Stock Number Vent Engine Cover Plate Assy 1407-7009-000 TAB GUIDE BELLOWS BASE 1407-3313-000 SCR M3X16 POSI DR PAN HD A4 SST 1504-3003-000 Cap, Plug 1406-3524-000 FITTING PNL MOUNT 3.18 HOSE BARB UNION 1504-3014-000 PLUG HOLE 15.9 DIA NYLON MICRO PLASTICS...
Page 315: Vent Engine
10 Illustrated Parts 10.23 Vent Engine Item Description Stock Number Vent Engine Assembly, Service (Aespire 7900) 1009-8423-000 Gas Inlet Valve (GIV) components Refer to section 9.24.3 Solenoid, 3-way NO (5 Volt) 1503-3088-000 2-pin Screw, M1.6x14 1006-4730-000 connector Retaining ring, 34.9 mm...
Page 316: Vent Engine - Under Side
Aespire 7900 10.23.1 Vent Engine - under side Item Description Stock Number Interface Manifold, pneumatic engine 1504-8505-000 (with free breathing valve and mechanical overpressure valve) O-ring, 12.42 ID x 15.98 OD (2) 1006-3615-000 Seat, free breathing valve 1503-3204-000 Valve, flapper...
Page 317: Legris Quick-Release Fittings
10 Illustrated Parts 10.24 Legris quick-release fittings Item Description Stock Number Tees — (tube/tube/tube) 4 mm (N 1202-3653-000 6 mm (O 1006-3544-000 8 mm (Air) 1006-3545-000 8 mm/6 mm/8 mm (SCGO pilot) 1009-3297-000 Tees — (tube/tube/standpipe) 6 mm (O 1006-3862-000 8 mm (Air - Drive gas) 1009-3370-000 Elbow —...
Page 318: Vent Drive And Low-Pressure Tubing
Aespire 7900 10.25 Vent Drive and low-pressure tubing Item Description Length — Size Stock Number Coupler, female - black 1503-3128-000 Coupler, male - black 1503-3237-000 Coupler, female - white 1503-3119-000 Coupler, male - white 1503-3236-000 Coupler, female - yellow 1503-3132-000...
Page 319 10 Illustrated Parts From Supply From Flowhead Venturi Drive Suction 1009-0541-000 02/05 10-49...
Page 320: Tubing For Use With Legris Fittings
Aespire 7900 10.26 Tubing for use with Legris fittings Except for the Tygon tubing (Items 147 and 150), this tubing is a flexible, Nylon-type tubing for use with quick-release fittings. Item Description Length — Size Stock Number 106* N20 PLINE - N2O FLWMOD...
Page 321 10 Illustrated Parts 1009-0541-000 02/05 10-51...
Page 322: Cables And Harnesses
Aespire 7900 10.27 Cables and harnesses Item Description Stock Number Cable, CPU Board to 7900 Vent display 1006-3701-000 Cable, CPU Board to machine switches 1009-6070-000 Cable, CPU Board to ESIB 1006-3700-000 Cable, CPU Board to Vent Engine connector plate 1006-3706-000...
Page 323 10 Illustrated Parts Integrated Power Supply Battery 1009-0541-000 02/05 10-53...
Page 324: Anesthetic Gas Scavenging System - Agss
Aespire 7900 10.28 Anesthetic Gas Scavenging System — AGSS 10.28.1 Passive AGSS Items 1 through 12 are included in all AGSS kits. Item Description, Common Parts Stock Number Seal, Receiver Body 1407-3901-000 Reservoir 1407-3903-000 Seal and scavenging down-tube 1407-3904-000 Thumbscrew, M6x28.5 1406-3305-000 O-ring, 4.42 ID, 9.65 OD...
Page 325 10 Illustrated Parts 6 (5) 4 (5) (10, 9) 1009-0541-000 02/05 10-55...
Page 326: Adjustable Agss
Aespire 7900 10.28.2 Adjustable AGSS Items 1 through 12 are included in all AGSS kits. Item Description, Common Parts Stock Number Seal, Receiver Body 1407-3901-000 Reservoir 1407-3903-000 Seal and scavenging down-tube 1407-3904-000 Thumbscrew, M6x28.5 1406-3305-000 O-ring, 4.42 ID, 9.65 OD...
Page 327 10 Illustrated Parts 6 (5) 4 (5) (10, 9) 1009-0541-000 02/05 10-57...
Page 328: Active Agss
Aespire 7900 10.28.3 Active AGSS Items 1 through 12 are included in all AGSS kits. Item Description, Common Parts Stock Number Seal, Receiver Body 1407-3901-000 Reservoir 1407-3903-000 Seal and scavenging down-tube 1407-3904-000 Thumbscrew, M6x28.5 1406-3305-000 O-ring, 4.42 ID, 9.65 OD...
Page 329 10 Illustrated Parts 6 (5) 4 (5) (10, 9) 15, 18 1009-0541-000 02/05 10-59...
Page 330: Integrated Suction Regulator
Aespire 7900 10.29 Integrated Suction Regulator 10.29.1 Major Components (Continuous and Venturi suction) 8 (d) (a,b,c) suction vacuum suction only with Venturi vacuum vacuum 6 (7) suction Item Description Stock Number Suction Control Module Refer to section 10.29.2 Venturi Assembly Refer to section 10.29.3...
Page 331: Suction Control Module
10 Illustrated Parts 10.29.2 Suction Control Module only with Venturi Item Description Stock Number Gauge, 760 mmHg 1009-3227-000 Gauge, 1 Bar 1009-3228-000 O-ring, Gauge (included with gauge assy, 2ea. required) 6700-0133-500 Control panel assembly, with suction regulator knob and mode control knob 1009-3213-000 Regulator Module (plugs into manifold assembly) 6700-1225-800...
Page 332: Venturi Assembly
Aespire 7900 10.29.3 Venturi assembly 6, 7 Item Description Stock Number C-clip retainer, Truarc 1500-3158-000 Elbow fitting, 4-mm Legris 1006-3663-000 1011-5002-000 Spoppet 1011-5001-000 Seal, u-cup large 1503-3090-000 Orifice 1011-3508-000 Screen, 150 mesh monel 1001-3808-000 Seal, u-cup small 1503-3089-000 Body 1011-5000-000...
Page 333: Auxiliary O 2 Flowmeter
10 Illustrated Parts 10.30 Auxiliary O Flowmeter 2 (3) Item Description Stock Number Flowmeter, 1-10 L/min, Complete with fittings installed 1006-8424-000 Flowmeter, 1-10 L/min, without fittings 1006-3841-000 Knob, gray 1011-3471-000 Set Screw 9211-0830-053 Nipple, Panel-Mount, Auxiliary O Outlet 1006-5177-000 Label, blank (if no Auxiliary O 1009-3243-000 Nut, M12x1.75, SST 0144-3132-140...
Page 334: Serial And Task Light Cable, Agss Flowtube, And Sample Return
Aespire 7900 10.31 Serial and task light cable, AGSS flowtube, and sample return Item Description Stock Number Cable, serial, Integrated CPU to side panel 1009-6072-000 Standoff 1202-3092-000 Lockwasher 0144-1104-331 Harness, Integrated CPU to task light harness 1009-6076-000 Label, flow indicator AGSS...
Page 335: Display Mounts
10 Illustrated Parts 10.32 Display mounts 10.32.1 Long arm Item Description Stock Number GCX Arm Kit, long 1009-3262-000 Spacer 1009-8419-000 GCX Bracket Kit 1009-3263-000 includes display mount (3a), cable guard (3b), and mounting hardware Cable, Integrated CPU to 7900 Display 1006-3701-000 Extrusion, upper dovetail 1009-3113-000...
Page 336: Folding Mount
Aespire 7900 10.32.2 Folding mount 11 (12) Item Description Stock Number Dovetail insert 1009-3408-000 Screw, M8x16 SKT HD 1009-3435-000 Screw, M6x12 SKT HD 0144-2436-101 Extrusion, Vent bracket mount 1504-3514-000 Bolt, carriage 1006-1433-000 Casting, Vent Bracket, 20 degree (2) 1504-3526-000 Bearing, white plastic (2)
Page 337: Cable Management Arm
10 Illustrated Parts 10.33 Cable management arm 4 (5) 7 (2, 3, 8) 1 (2, 3) Item Description Stock Number Cable management arm, complete assembly 1009-8181-000 Bracket, cable management 1009-3261-000 Screw, M4x12 0140-6226-111 Lockwasher, M4 external 9213-0540-003 Extrusion, cable arm, front loading 1009-3247-000 Screw, M4x6 Nyloc 1009-3283-000...
Page 338: Display Arm Mounting Kits For Optional Equipment
Aespire 7900 10.34 Display arm mounting kits for optional equipment Item Description Stock Number Cardiocap 5 mount 1009-3265-000 S/5 Flat Panel mount 1009-3266-000 Spacelabs Flat Panel mount 1009-3267-000 Spacelabs PC Scout mount 1009-3268-000 10-68 02/05 1009-0541-000...
Page 339: Schematics And Diagrams
11 Schematics and Diagrams In this section Schematics are subject to change without notice. Circuit boards are available only as complete assemblies. Figure 11-1 System connection block diagram ..........11-2 Figure 11-2 Gas scavenging circuits .
Page 340 Aespire 7900 CO2 Bypass and Condenser Option Vent Engine Atmosphere APL valve 0-70 cm H2O Free Absorber Breathing Canister Check Valve Drain Button Popoff Valve Mechanical Over Pressure Valve Exhalation Valve (110 cm H2O) (2.0 cm H2O bias) Atmosphere Condenser...
Page 341 11 Schematics and Diagrams Scavenging* Scavenging* Scavenging* From System From System From System +10 cm H2O +10 cm H2O +10 cm H2O Relief Valve Relief Valve Relief Valve 0.3 cm H2O 0.3 cm H2O 0.3 cm H2O Entrainment Entrainment Entrainment Room High or Low Filter...
Page 342 Aespire 7900 Control Module Upper Chassis Ventilator Display AC Power EL Display Outlets Task Light Membrane Switches Connector Board Optical Encoder Speaker Supply Switch RS232 Download Vent Engine Board Flow Inlet Control Valve Valve Vent Engine 68340 Microcontroller Memory and I/O Decoding...
Page 343 11 Schematics and Diagrams Key to Numbered Components 1. Pipeline pressure gauge 2. Pipeline inlet 3. Cylinder pressure gauge 4. Cylinder inlet 5. Primary regulator (cylinder pressure) 6. High-pressure relief valve (758 kPa / 110 psi)* 7. Supply connections for the ventilator a.
Page 344 Aespire 7900 Control/Display Module Task Light RS-232 Bag/Vent white black Integrated white ABS ON black orange Canister white Bypass Fuse Line Filter Fuse Power Supply Inlet Battery Key to Symbols ESIB VEB = Vent Engine Board ESIB = Enhanced Sensor Interface Board...
Page 345 11 Schematics and Diagrams Auxiliary O Flowmeter From Scavenging Downtube Supply Vaporizer Manifold Sample Return From Flowmeter Vent Engine Enhanced Sensor Interface Board ACGO ACGO Selector Switch The Sample Gas Return is directed to the scavenging system as a factory default. A qualified service representative can reroute the sample gas back to the breathing system.
Page 346 Aespire 7900 OUTLET BREAKERS COUNTRY SPECIFIC OUTLETS INRUSH PCA 100-120V ISOLATION TRANSFORMER AC INLET MODULE FUSIBLE SYSTEM BREAKER (BRN) LINE IN LINE OUT LINE THERMAL FUSE 130C FILTER 1.5KE250C 150V 250V (ROCKER) CONNECTOR D6521ZOV151RA20 SOLID 1500W AC INLET STATE JH1A-W-AC120V-Q...
Page 347 11 Schematics and Diagrams OUTLET BREAKERS COUNTRY SPECIFIC OUTLETS INRUSH PCA 220-240V AC INLET MODULE SYSTEM BREAKER LINE OUT (BRN) LINE IN FUSIBLE LINE ISOLATION TRANSFORMER FILTER 1.5KE440CA D65ZOV271RA140 KH115 440V (ROCKER) 275V 240V AC INLET 1500W Differential JH1A-W-AC240V-Q IEC 320 SOLID Mode STATE...
Page 348 Notes 11-10 02/05 1009-0541-000...

Datex-Ohmeda Aespire 7900 Technical Reference Manual

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Datex-Ohmeda Aespire 7900

Summary of Contents for Datex-Ohmeda Aespire 7900