Getinge Maquet Servo-i Service Manual
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Getinge Maquet Servo-i Service Manual

Ventilator system
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Servo-i Ventilator System
CRITICAL CARE
Service Manual

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Summary of Contents for Getinge Maquet Servo-i

  • Page 1 Servo-i Ventilator System CRITICAL CARE Service Manual...
  • Page 2 Servo-i Ventilator System Important Notes 1 - 2 Service Manual Revision 02...

  • Page 3: Table Of Contents

    Important Servo-i Ventilator System Contents 1. Important ................. 2. Introduction ..............3. Description of functions ..........4. Disassembling and assembling ........5. Service procedures ............6. Troubleshooting .............. 7. Preventive maintenance ..........8. Index................. 9. Diagrams ................. Revision 02 Service Manual 1 - 3...

  • Page 4: Important

    Servo-i Ventilator System Important Important General Symbols used in this manual • Service documentation for the Servo-i Ventilator • ESD sensitive components. When System consists of: handling ESD-sensitive devices, established procedures must be – User's manual. The User's manual is an observed to prevent damage.
  • Page 5 Important Servo-i Ventilator System Important Installation To the responsible service personnel • Only personnel trained and authorized • The contents of this document are not binding. by Maquet shall be permitted to install If any significant difference is found between the the Servo-i.
  • Page 6 Servo-i Ventilator System Important Important Environmental declaration Construction materials Purpose The construction materials used in Servo-i in % of This environmental declaration is for a Servo-i the total weight. basic unit including the carrier and one battery. Letters codes within brackets refers to the Functional Block Diagram in chapter Diagrams.
  • Page 7 Important Servo-i Ventilator System Important Articles of consumption Noise level 1. Bacteria filter Less than 50 dBA. 2. Filters for the gas modules 3. Filter for the inspiration pressure transducer Packing materials The amounts of packing materials will vary 4. Filter for the O cell depending on customer adaptation.
  • Page 8 Servo-i Ventilator System Important Notes 1 - 8 Service Manual Revision 02...

  • Page 9: Introduction

    Servo-i Ventilator System Introduction 2. Introduction Only personnel trained and authorized Main units ............2 - 2 by Maquet shall be permitted to perform installation, service or maintenance of User Interface ..........2 - 4 the Servo-i. Patient Unit ............. 2 - 6 Make sure to prepare the Servo-i properly before disassembling and assembling.
  • Page 10 Introduction Servo-i Ventilator System Main units The Servo-i is available in different main configurations: • Infant User Interface • Adult • Universal These main configurations are as standard equipped with a number of ventilation modes suitable for each patient category. Further ventilation modes can be installed via software Option Upgrades.
  • Page 11 Servo-i Ventilator System Introduction A number of optional equipment can be added to the Gas trolley Servo-i Ventilator System. For further information, • Servo-i – User's manual refer to the documents listed below. • Gas trolley – Installation Instructions Servo-i Mobile cart •...
  • Page 12 Introduction Servo-i Ventilator System 3. Main rotary dial. 4. Special function keys. 5. Direct access knobs. 6. Mains indicator (green). 7. Standby indicator (yellow). 8. Start/Stop (Standby) ventilation key. 9. Luminescence detector, adjusts display brightness automatically. 10. Loudspeaker grid. 11. Cable reel. 12.
  • Page 13 Servo-i Ventilator System Introduction < When the front panel section is removed from the rear cover, the following parts are accessible: 1. Touch screen assembly, front cover frame included. 2. TFT Display. 3. Backlight lamps. 4. PC board Backlight inverter. 5.
  • Page 14 Introduction Servo-i Ventilator System Patient Unit 10. Control cable connector. The Patient Unit can be rotated on and pulled out of the Servo-i Mobile cart. It can also be mounted onto 11. 9-pole serial port for data communication a Servo-i Holder or a Servo-i Shelf base. (RS- 232).
  • Page 15 Servo-i Ventilator System Introduction When the Patient Unit front cover is removed, the following parts are accessible: 1. PC 1772 Monitoring. 2. PC 1771 Control. 3. PC 1784 Expiratory channel with the two connected PC 1781 Inspiratory and Expiratory Pressure Transducers. 4.
  • Page 16 Introduction Servo-i Ventilator System The upper part of the Patient Unit contains the " inspiratory section and the expiratory section. The main parts of the inspiratory section are the: 14. Two gas modules, Air and O , for regulation of the inspiratory gas.
  • Page 17 Servo-i Ventilator System Introduction Servo-i software structure Breathing The Breathing SW controls the delivery of gases to the patient. This subsystem is responsible for the breathing system, that is: PC1777 PANEL • Ventilation control and regulation • Inspiratory channel PANEL S/W •...
  • Page 18 Introduction Servo-i Ventilator System Notes 2 - 10 Service Manual Revision 02...

  • Page 19: Description Of Functions

    Servo-i Ventilator System Description of functions 3. Description of functions Only personnel trained and authorized About this chapter ..........3 - 2 by Maquet shall be permitted to perform installation, service or maintenance of Memory types used in the Servo-i ....3 - 2 the Servo-i.
  • Page 20 Description of functions Servo-i Ventilator System About this chapter • ID-PROM: The ID information can be read by the Servo-i. This text refers to the Functional Main Blocks • On/Off switch: Switch to Power up or Power down diagram in chapter 'Diagrams'. the Servo-i.
  • Page 21 Servo-i Ventilator System Description of functions Patient unit Gas inlet Gas supply is connected to the ventilators gas inlet Inspiratory section nipples. The design of the gas inlet nipples and their color markings vary according to the standard Functional Main Blocks diagram marking: 'I' chosen.
  • Page 22 Description of functions Servo-i Ventilator System Nozzle unit cell The plastic Nozzle Unit contains a valve diaphragm. The O Cell is mounted in a housing on the The valve diaphragm, controlled by the Inspiratory Inspiratory Pipe and is protected by a bacteria filter. Solenoid, regulates the gas flow through the Gas Module.
  • Page 23 Servo-i Ventilator System Description of functions Temperature sensor • The pressure inside the inspiratory pipe is above 117 ±7 cm H O. This is an extra safety function and A Temperature Sensor is integrated into the this situation will normally not occur. connector on top of the O Cell.
  • Page 24 Description of functions Servo-i Ventilator System Expiratory section Ultrasonic flowmeter The Ultrasonic Flowmeter is a measuring device for Functional Main Blocks diagram marking: 'E' the expiratory gas flow, using ultrasound technique The main block Expiratory Section conveys the with two ultrasonic transducers/recievers. breathing gas from the patient breathing system to The measuring process is controlled from the main the Expiratory Outlet.
  • Page 25 Servo-i Ventilator System Description of functions Bacteria filter and expiratory pressure tube PC 1785 Expiratory channel connector Via a Bacteria Filter inside the cassette, the The PC 1785 Expiratory Channel Connector is a Expiratory Pressure Tube connects the cassette to connector board including signal filters that is the Expiratory Pressure Transducer.
  • Page 26 Description of functions Servo-i Ventilator System PC 1784 Expiratory channel Regulation of a constant Inspiratory flow during expiration time: The desired constant Inspiratory flow Functional Main Blocks diagram marking: 'F' value is the default or preset Bias flow value (see User’s manual).
  • Page 27 Servo-i Ventilator System Description of functions The buzzer on PC 1772 Monitoring generates the Mains inlet alarm signal in case of +5 V or +3.3 V power failure. Inlet for mains power supply including grounding The buzzer and +5 V / +3.3 V failure logic is powered connection.
  • Page 28 Description of functions Servo-i Ventilator System Module unit Battery modules (optional) Connection slots for 6 optional modules, e. g. Battery The Battery module is rated 12 V, 3.5 Ah. Battery modules or CO Analyzer module. backup time is approx. 0.5 hour/battery. Up to six backup Battery modules can be connected to the Module unit.

  • Page 29: Disassembling And Assembling

    Servo-i Ventilator System Disassembling and assembling 4. Disassembling and Only personnel trained and authorized assembling by Maquet shall be permitted to perform installation, service or maintenance of General .............. 4 - 2 the Servo-i. Preparations ............4 - 2 Make sure to prepare the Servo-i properly before disassembling and assembling.
  • Page 30 Disassembling and assembling Servo-i Ventilator System General Replacing PC boards Disassembling of the main units in the Servo-i The Servo-i software is distributed on different System is described in this chapter. If not stated subsystems, located on the following PC boards: otherwise, the assembling procedure is the reverse •...
  • Page 31 Servo-i Ventilator System Disassembling and assembling User Interface To separate the front panel section from the rear cover: • Disconnect the control cable (1). • Remove the screws (2). • Lift off the rear cover from the front panel section. All parts inside the front panel section are now accessible.
  • Page 32 Disassembling and assembling Servo-i Ventilator System PC 1777 Panel To remove PC 1777 Panel (1): • Carefully disconnect all cable connectors from PC 1777. • Remove the screws (2) holding PC 1777. • Lift off PC 1777. Note: When replacing PC 1777 Panel, it can be necessary to re-install the System SW.
  • Page 33 Servo-i Ventilator System Disassembling and assembling • Remove the screws (12) holding the TFT Display to the support plate. • Carefully disconnect the cable (13) from PC 1777 as shown in the illustration and/or from the TFT Display connector. Backlight lamps To access the Backlight lamps: •...
  • Page 34 Disassembling and assembling Servo-i Ventilator System Touch screen assembly To remove the Touch screen assembly (1): • Lift off the TFT Display. Refer to section 'TFT Display'. • Remove the Main rotary dial (2): – Pull off the Main rotary dial-knob. –...
  • Page 35 Servo-i Ventilator System Disassembling and assembling • While holding the label strip in correct position, remove the protective foils (3 and 4). • Press the label strip against the adhesive area. < • Remove the protective foil (5). • Press the front panel film (6) firmly against the front panel to ensure proper adhesion.
  • Page 36 Disassembling and assembling Servo-i Ventilator System Patient Unit Front cover To remove the Patient Unit front cover (1): • Remove the screw covers and the screws (2). • Remove the two ventilation covers (3). • Remove the two screws (4). •...
  • Page 37 Servo-i Ventilator System Disassembling and assembling PC 1771, PC 1772 and PC 1784 < • Remove the Patient Unit front cover. • PC 1771 Control (1): – Release the locks on the PC board guides. – Carefully pull out the PC board. •...
  • Page 38 Disassembling and assembling Servo-i Ventilator System Module unit including PC 1775 Plug-and- < play back-plane • Remove the Patient Unit front cover. • Remove the AC/DC Converter. • Disconnect the nebulizer cable connector (1). • Remove the screw (2). • Remove the screws (3). •...
  • Page 39 Servo-i Ventilator System Disassembling and assembling PC 1778 DC/DC & Standard connectors • Remove the Patient Unit front cover. • Remove the screws (1). • Carefully pull out PC 1778 (2). Internal fan • Remove the AC/DC Converter. • Remove PC 1789 Remote alarm connector if mounted.
  • Page 40 Disassembling and assembling Servo-i Ventilator System PC 1789 Remote alarm connector PC 1789 Remote alarm connector is part of the optional Alarm output connector. • Disconnect the cable (1). • Remove the screws (2). • Carefully lift out PC 1789 (3). PC 1770 Main back-plane •...
  • Page 41 Servo-i Ventilator System Disassembling and assembling Inspiratory channel Removal of the inspiratory channel, as well as replacement of O cell/filter, is described in the User's manual, chapter 'Maintenance'. Safety valve membrane To remove the safety valve membrane: • Remove the inspiratory channel. •...
  • Page 42 Disassembling and assembling Servo-i Ventilator System Gas modules To remove the gas modules: • Remove the inspiratory section cover. • Loosen the screw (1). • Lift off the gas module bracket (2). • Pull out and lift off both gas modules. Note 1: When assembling, make sure that the connector muff properly seals around the inspiratory pipe (1).
  • Page 43 Servo-i Ventilator System Disassembling and assembling PC 1785 Expiratory channel connector To remove PC 1785: • Remove the Patient Unit front cover. • Disconnect the PC 1785 cable connector (1). • Remove the screws (2). • Pull down and lift off PC 1785 (3). Note: When assembling, make sure that the rubber seal (4) is correctly seated around PC 1785.
  • Page 44 Disassembling and assembling Servo-i Ventilator System Expiratory cassette membrane The expiratory cassette is a complete unit and must not be disassembled. The only part that can be replaced is the valve membrane. Operating capacity for the membrane is estimated to 10.000.000 breathing cycles.
  • Page 45 Servo-i Ventilator System Disassembling and assembling • Squeeze the retaining ring pliers and carefully press the membrane in place into the cassette as shown in the illustration. • Carefully release and remove the retaining ring pliers. • Check that the membrane is not deformed by the retaining ring.
  • Page 46 Disassembling and assembling Servo-i Ventilator System Fixed battery module If the upper slot in the Module unit is equipped with a latch, a tool and two-hand operation is required to remove the Battery module. To release the fixed battery module: 1.

  • Page 47: Service Procedures

    Servo-i Ventilator System Service procedures 5. Service procedures Only personnel trained and authorized Checking the Battery modules ......5 - 2 by Maquet shall be permitted to perform installation, service or maintenance of Replacing the lithium batteries on the Servo-i. PC 1771 and PC 1772 ........
  • Page 48 Service procedures Servo-i Ventilator System Checking the Battery modules Check the manufacturing date of the Battery module. Manufacturing date (year-week) is printed on the battery label. The batteries must be replaced after 3 years. • Allow the Battery modules to charge until it is fully charged.
  • Page 49 Servo-i Ventilator System Service procedures Replacing the lithium batteries on PC 1771 and PC 1772 The lithium batteries must be replaced after 5 years. A Technical error message will appear on the screen if the battery voltage level is too low. Always replace booth batteries at the same time to keep the same replacement date for both batteries.
  • Page 50 Service procedures Servo-i Ventilator System Using the Menu and Biomed key The 'Menu' and 'Biomed' functions are useful tools during service. The adjacent flowchart shows the 'Biomed' functions in System version 2.0. A complete set of flowcharts showing all 'Keys' and 'Screen touch pad' functions can be found in the 'Servo-i Ventilator System –...
  • Page 51 Servo-i Ventilator System Service procedures Edit configuration cell adaptation Available only in Standby mode. Available only during ventilation. Default Alarm limits can be changed in this window: Adjustment of the O concentration reading. Refer to the 'Servo-i Ventilator System – User's Adult alarm limits and Infant alarm limits Manual', chapter Operating your Servo-i / Operating •...
  • Page 52 Service procedures Servo-i Ventilator System Software installation Field Service System General General • Before starting any software upgrade or update, • The Field Service System (FSS) is a software check the version of the: provided to facilitate troubleshooting, service and maintenance of the Servo-i Ventilator System.

  • Page 53: Troubleshooting

    Servo-i Ventilator System Troubleshooting 6. Troubleshooting Only personnel trained and authorized by Maquet shall be permitted to perform General .............. 6 - 2 installation, service or maintenance of Pre-use check ........... 6 - 3 the Servo-i. Technical error codes ........6 - 11 Make sure to prepare the Servo-i properly before disassembling and assembling.
  • Page 54 Troubleshooting Servo-i Ventilator System Possible causes to malfunction not mentioned in the following troubleshooting guides are: • The system has not been correctly assembled after cleaning, maintenance or service. • Disconnection or bad connection in cable connectors, PC board connectors, and interconnection boards.
  • Page 55 Servo-i Ventilator System Troubleshooting Pre-use check Some of the recommended actions described below The Servo-i demands the user to start the automatic refer to the Field Service System (FSS). The Service Pre-use check at every start-up of the unit. It is also card is required to access the FSS.
  • Page 56 Troubleshooting Servo-i Ventilator System Test Test description * Recommended action if the test fails If the Alarm output connector test Internal tests failed: (continued) 1. Replace PC 1789 Remote alarm connector. 2. Replace PC 1772 Monitoring If the power test failed: 1.
  • Page 57 Servo-i Ventilator System Troubleshooting Test Test description * Recommended action if the test fails If message ‘Leakage’ or ‘Excessive Internal leakage test Checks the internal leakage, with test tube connected, using the inspiratory leakage’ appears: and expiratory pressure transducers. 1. Check that the test tube is Checks that the leakage at 80 cm H correctly connected.
  • Page 58 Troubleshooting Servo-i Ventilator System Test Test description * Recommended action if the test fails Internal leakage test If message ‘Pressure Transducer (continued) difference > 5 cm H O’ appears: 1. Check that the pressure transducer tubes and the inspiratory filter are correctly mounted.
  • Page 59 Servo-i Ventilator System Troubleshooting Test Test description * Recommended action if the test fails Pressure transducer Calibrates and checks the inspiratory Check that System SW V1.03.01 (or test and expiratory pressure transducers. later) is installed. Update System SW if required. The new zero value for the pressure transducers may not differ more than Check the ‘Test results’-log in the...
  • Page 60 Troubleshooting Servo-i Ventilator System Test Test description * Recommended action if the test fails 1. Check the inspiratory section: Safety valve test Checks and if necessary adjusts the opening pressure for the safety valve to • Check that the inspiratory pipe 117 ±3 cm H is correctly mounted in Checks the hardware signals related to...
  • Page 61 Servo-i Ventilator System Troubleshooting Test Test description * Recommended action if the test fails Checks the inspiratory flow transducer. 1. Check that the connected gas Flow transducer test Calibrates and checks the expiratory supply pressure (Air and O ) is flow transducer.
  • Page 62 Troubleshooting Servo-i Ventilator System Test Test description * Recommended action if the test fails Checks the patient circuit leakage, with If the internal leakage test (see above) Patient circuit leakage patient tubing connected, using the test has passed, the leakage is to be inspiratory and expiratory pressure located to the patient circuit.
  • Page 63 Servo-i Ventilator System Troubleshooting Technical error codes Some of the Error codes are intended only for The table below shows recommended actions in R&D, not for field service. If so, the text ‘N/A’ is case of Technical error alarms. stated in the ‘Recommended action’-column. Error Error message / Possible cause Recommended action...
  • Page 64 Troubleshooting Servo-i Ventilator System Error Error message / Possible cause Recommended action code VALVES_DISABLED 1. Replace PC 1784 Expiratory channel. 2. Replace PC 1771 Control. 3. Replace PC 1778 DC/DC & Standard Connectors. 4. Replace PC 1772 Monitoring. SAFETY_VALVE_OPEN 1. Check inspiratory channel. 2.
  • Page 65 Servo-i Ventilator System Troubleshooting Error Error message / Possible cause Recommended action code TECH_MON_DEVICE_COMM_ERR Depending on ID #. If repeated, replace parts as follows: Report to MCC HSC for further information. PC 1772 Monitoring. PC 1775 Plug-and-play back-plane. PC 1778 DC/DC & Standard Connectors. PC 1781 Inspiratory pressure transducer.
  • Page 66 Troubleshooting Servo-i Ventilator System Error Error message / Possible cause Recommended action code EXP_FLOW_MTR_NODE_CONNECT_TIME- 1. Replace PC 1784 Expiratory channel. EXP_FLOW_MTR_RANGE_ERR BARO_UPPER_LIMIT_EXCEEDED 1. Check/calibrate barometer. 2. Replace PC 1772 Monitoring. BARO_LOWER_LIMIT_EXCEEDED 1. Check/calibrate barometer. 2. Replace PC 1772 Monitoring. Note: This alarm will be activated if the ambient pressure is below 650 hPa, e.g.
  • Page 67 Servo-i Ventilator System Troubleshooting Error Error message / Possible cause Recommended action code Breathing 10001 BATTERY_MIN_VOLTAGE 1. Replace battery on PC 1771 Control. 10002 BRE_I2C_ERROR 1. Replace PC 1771 Control. 10003 BRE_FATAL_MEMORY_ERROR 1. Restart the unit. 2. Replace PC 1771 Control. Panel 20001 PANEL_DEVICE_ERROR 1.
  • Page 68 Troubleshooting Servo-i Ventilator System Error Error message / Possible cause Recommended action code 20004 PANEL_AUDIO_FAILED 1. Restart the unit. Do not touch the User Interface during system start-up. Interfering the knobs, keys, touch screen, loudspeaker grid, etc, may affect the internal technical tests.
  • Page 69 Servo-i Ventilator System Troubleshooting Error Error message / Possible cause Recommended action code Expiratory Flow Meter 40001 Technical error in Exp flow meter. 1. Replace the expiratory cassette. If the technical alarm ‘Expiration flow meter 2. Replace PC 1784 Expiratory channel. PC 1784 60 V underrange’...
  • Page 70 Troubleshooting Servo-i Ventilator System Notes 6 - 4 6 - 18 Service Manual Service Manual Revision 02 Revision 02...

  • Page 71: Preventive Maintenance

    Servo-i Ventilator System Preventive maintenance 7. Preventive maintenance Only personnel trained and authorized by Maquet shall be permitted to perform General .............. 7 - 2 installation, service or maintenance of Preparations ............7 - 2 the Servo-i. Equipment ............7 - 2 Make sure to prepare the Servo-i properly before disassembling and assembling.
  • Page 72 Preventive maintenance Servo-i Ventilator System General • A 'Preventive maintenance' must be performed at least once every year as long as the unit is not used more than normal. Normal operation is estimated to correspond to approx. 5,000 hours of operation.
  • Page 73 Servo-i Ventilator System Preventive maintenance Preventive maintenance Maintenance kit, 5,000 hours Only original parts from the manufacturer must be used. Spare parts and maintenance kits can be ordered from your local Maquet representative. When performing this maintenance, a 'Maintenance kit, 5,000 hours' should be used. The following parts shall be replaced and they are included in the 'Maintenance kit, 5,000 hours': A.
  • Page 74 Preventive maintenance Servo-i Ventilator System B. Replace plastic nozzle units in the gas modules. After replacement of plastic nozzle units, wait 10 minutes before connecting pressure to the gas modules. Inspiratory pressure transducer filter C. Replace the filter for the inspiratory pressure transducer.
  • Page 75 Servo-i Ventilator System Preventive maintenance Internal fan filter • Remove the internal fan filter (1). • Check if the filter is damaged. Replace damaged filter. • If not damaged, clean the filter. The filter can be rinsed in water. Shake out and make sure that the filter is free from excess water.
  • Page 76 Preventive maintenance Servo-i Ventilator System User Interface Battery modules • Check the touch screen readability: • Check the status of the Battery modules used: – Transparency – Check the manufacturing date of the Battery modules. Manufacturing date (year-week) is – Surface printed on the battery label.

  • Page 77: Index

    Servo-i Ventilator System Index 8. Index Only personnel trained and authorized by Maquet shall be permitted to perform Alfabetic index ........... 8 - 2 installation, service or maintenance of the Servo-i. Make sure to prepare the Servo-i properly before disassembling and assembling. Refer to section 'Hazard notices' in chapter 'Important'.
  • Page 78 Index Servo-i Ventilator System Expiratory valve 2-8 Expiratory valve coil 2-7, 2-8, 4-15 AC/DC Converter 2-7, 3-9, 4-9 External +12V DC power supply connector 2-6, 9-2 Alarm output connector 2-3, 2-6, 3-10, 9-2 Assembling guidelines 4-2 Field Service System 5-6 Fixed key 2-4 Backlight inverter 2-5, 3-2, 4-3, 4-4 Fixed keys label 4-6...
  • Page 79 Servo-i Ventilator System Index Installation Instructions 1-4 Internal fan 2-6, 2-7, 3-10, 4-11, 7-5 cell 2-8, 3-4 Internal fan filter 7-5 On/Off switch 2-4 IV Pole 2-3 Option Upgrade 5-6 Optional equipment connector 2-6, 9-2 Optional PC board slots 3-10 Label strips 4-6 Lithium battery 1-5, 5-3, 7-2, 7-6 Locking arm, rotation 2-4...
  • Page 80 Index Servo-i Ventilator System Safety inspection 7-6 Ultrasonic flowmeter 2-8 Safety valve 2-8, 3-5 User Interface 2-2, 2-4, 4-3, 7-6 Safety valve membrane 4-13 User Interface controls 3-2 Safety valve pull magnet 4-13 User Interface panel cover 2-3 Serial number label 1-4, 2-4, 2-6 User’s manual 1-4 Serial port 2-6 Service card 5-6...

  • Page 81: Diagrams

    Servo-i Ventilator System Diagrams 9. Diagrams Only personnel trained and authorized by Maquet shall be permitted to perform Standard and optional connectors ....9 - 2 installation, service or maintenance of Functional Main Blocks diagram ...... 9 - 3 the Servo-i. Make sure to prepare the Servo-i properly before disassembling and assembling.
  • Page 82 Diagrams Servo-i Ventilator System Standard and optional connectors N26 – External +12 V DC supply input N28 / N70 – Control cable 1. +12V_UNREG_EXT_DC 1. +12V_UNREG_PANEL 2. +12V_UNREG_EXT_DC 2. GND 3. – 3. LED_CONTROL 4. GND 4. ON_OFF_CONTROL 5. GND 5.
  • Page 83 Servo-i Ventilator System Diagrams Functional Main Blocks diagram EXPIRATORY SECTION EXPIRATORY CASSETTE PC1786 EXP. CHANNEL CASSETTE EXPIRATORY CHANNEL CHANNEL EXPIRATORY EXP. CONNECTOR PC1777 VALVE ONE-WAY PC1785 HEATING FOIL PANEL VALVE PC CARD SLOT EXPIRATORY ULTRASONIC FLOWMETER OUTLET PC1785 EXP. EXP. µP PRESS.
  • Page 84 MAQUET Critical Care AB SE-171 95 Solna, Sweden Phone: +46 8 730 70 00 www.maquet.com © MAQUET Critical Care AB, 2004. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the copyright owner in writing.

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