SERVO-U and SERVO-n Service Manual Rev 02 Dec 2013

NOTES

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CONTENTS

1. Important 2. Introduction 3. Description of functions 4. Disassembling and assembling 5. Service procedures 6. Troubleshooting 7. Preventive maintenance 8. Index 9. Service Manual revision history 10. Diagrams

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1. IMPORTANT General  The information in this Service Manual is valid for both the SERVO-U and the SERVO-n Ventilator System unless otherwise stated.  Service documentation for the SERVO-U/SERVO-n Ventilator System consists of:  User's Manual including Cleaning and Maintenance manual. The User's Manual is an indispensable complement to the Service Manual for proper servicing.  Service Manual  Installation Instructions  Spare Parts information  Documentation for all optional equipment included in the system is also available.  The SERVO-U/SERVO-n Ventilator System is referred to as the system throughout this manual.  The SERVO-U/SERVO-n User’s Manual is referred to as the User’s Manual throughout this manual.  There are two serial number labels on the unit:  One label is attached to the Patient Unit. The serial number stated on this label is the ID number of the Patient Unit. The serial number is also stored in the SW memory as the 'System ID'.  One label is attached to the rear side of the User Interface. The serial number stated on this label is the ID number of the User Interface.  System version number can be found in the Status window on the User Interface. Make sure that the version of the User's Manual corresponds to the System version.  In addition to the Important information given here and in the related documents (e.g. in the User's Manual), always pay attention to applicable local and national regulations.  Responsibility for the safe functioning of the equipment reverts to the owner or user in all cases in which service or repair has been done by a non-professional or by persons who are not employed by or authorized by MAQUET, and when the equipment is used for other than its intended purpose. WARNING! Do not modify this equipment without authorization of the manufacturer.

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1. IMPORTANT Symbols used in this manual ESD sensitive components. When handling ESD-sensitive devices, established procedures must be observed to prevent damage. Special waste. This product contains electronic and electrical components. Discard disposable, replaced and left-over parts in accordance with appropriate industrial and environmental standards.

Recycling. Worn-out batteries must be recycled or disposed of properly in accordance with appropriate industrial and environmental standards. WARNING! Indicates critical information about a potential serious outcome to the patient or the user. Technical training. Refers to the Technical training supplied by MAQUET.

Service contract. Refers to the Service contract supplied by MAQUET.

Hazard notices  Before disassembling or assembling of the system, make sure that the:  On/Off switch is set to Off.  Mains power cable is disconnected.  Gas supply is disconnected (wall and/or cylinder).  Battery modules are disconnected.  Regular cleaning and extended cleaning of the inspiratory channel are performed. Refer to instructions in the User's Manual. WARNING! With gas supply connected to the system, there are pressurized components inside the unit. All personnel must exercise extreme caution if fault tracing or adjustments are performed with gas supply connected and with covers removed. WARNING! With power supply connected to the system, there are energized electrical components inside the unit. All personnel must exercise extreme caution if fault tracing or adjustments are performed with power supply connected and with covers removed.

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1. IMPORTANT Installation Only personnel trained and authorized by MAQUET shall be permitted to install the system. The installation and handing-over procedures are described in the 'SERVO-U/SERVO-n Ventilator System – Installation Instructions'.

Functional check  After any installation, maintenance or service intervention in the system, perform a 'Pre-use check' according to instructions in the User's Manual.

Service The system must be serviced at regular intervals by personnel trained and authorized by MAQUET. Any maintenance or service must be noted in a log book provided.  It is recommended that maintenance and service is done as a part of a service contract with MAQUET.  For functionality enhancement, the latest released System SW version is always recommended.  Preventive maintenance of the system must be performed by personnel trained and authorized by MAQUET at least once a year, or every 5000 hours of operation, whichever comes first.  The Battery modules shall be replaced after two and a half years from their manufacturing date.  The Memory backup batteries (Lithium batteries on PC 1991 and PC 1992) shall be replaced every five years. Recycling. Worn-out batteries must be recycled or disposed of properly in accordance with appropriate industrial and environmental standards. Special waste. This system contains electronic and electrical components. Discard disposable, replaced and left-over parts in accordance with appropriate industrial and environmental standards.

ESD sensitive components. When working with ESD sensitive components, always use a grounded wrist band and a grounded work surface. Adequate service tools must always be used.

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1. IMPORTANT To the responsible service personnel  The contents of this document are not binding. If any significant difference is found between the system and this document, please contact MAQUET for further information.  We reserve the right to modify the system without amending this document or advising the user.  The device complies with standards and requirements as stated in the User's Manual.  Only original spare parts from MAQUET must be used in the system. Only personnel trained and authorized by MAQUET shall be permitted to perform installation, service or maintenance of the system.

ESD sensitive components. PC boards (spare parts) must always be kept in a package for sensitive electronic devices. MAQUET will not otherwise assume responsibility for the materials used, the work performed or any possible consequences of same.

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1. IMPORTANT Environmental declaration Purpose This environmental declaration is for a SERVO-U/SERVO-n basic system including the Mobile cart and two batteries. Components with special environmental concern Components listed below shall be disposed of in accordance with appropriate industrial and environmental standards. Printed circuit boards  PC 1781 Pressure transducer, 2 pcs  PC 1785 Expiratory channel connector  PC 1988 Nebulizer connect  PC 1990 Main back-plane  PC 1991 Control, including battery  PC 1992 Monitoring, including battery  PC 1993 Ethernet switch  PC 1994 Nebulizer  PC 1995 Plug & Play back-plane  PC 1998 DC/DC & Standard connectors  PC 1999 LED board  PC 2000 Pneumatic back-plane  PC 2004 Expiratory channel  B732 I/O (User Interface)  B733 Touch button (User Interface)  B734 Light bar (User Interface)  B735 Touch controller (User Interface)  B739 Ambient light sensor (User Interface)  B740 CPU (User Interface) Other electronics  LCD display  Touch panel (glass)  O2 cell, containing caustic lime and lead (Pb)  O2 Sensor, containing PC boards  Gas module Air, containing multiple PC boards  Gas module O2, containing multiple PC boards  AC/DC Converter, containing PC boards  Expiratory cassette  Expiratory valve coil  Safety valve pull magnet

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1. IMPORTANT  Battery modules Nickel-Metal Hydride  CO2 Analyzer Module, containing PC boards  Edi Module, containing PC boards  Y Sensor Module, containing PC boards Construction materials The construction materials used in system in % of the total weight. Metal – total 76%  Aluminium 68%  Steel, zink, brass 8% Polymeric material – total 10%  PA (Polyamide)  POM (Polyoxymethylene)  SI (Silicone)  TPE (Thermoplastic elastomer)  PUR (Polyurethane)  ABS (Acrylicnitrilebutadienstyrene)  EPDM (Ethylenepropylenedienemonomer)  PTFE (Polytetrafluoroethylene)  FPM (Fluororubber)  NBR (Nitrilerubber)  PP (Polypropylene)  PVC (Polyvinyl chloride)  PS (Polystyrene) Electronics – total 14%  Battery modules Nickel-Metal Hydride  Printed circuit boards, cables etc. Others – very small amounts  Filter paper of fiber glass Parts and accessories containing phthalates  Some internal electronic cables contain DEHP classified as SVHC (Substance of Very High Concern) according to REACH (European Union Regulation EC/2006/1907). When the ventilator system is used as intended, no phthalates will be transferred to the environment.

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1. IMPORTANT Articles of consumption 1. Bacteria filter 2. Filters for the gas modules 3. Filter for the inspiration pressure transducer 4. Filter for the O2 cell (if applicable) 5. Nozzle units for the gas modules 6. Battery modules 7. Memory backup batteries 8. Expiratory cassette 9. Expiratory cassette membrane 10. O2 cell (if applicable) Item 1: Consumption approx. 250 pcs/year. Items 2 – 5: Changed approx. every 5.000 hours. Items 6: Changed approx. every 10.000 hours. Items 7: Changed approx. every 25.000 hours. Items 8 – 10: Changed when needed. Articles related to clinical applications, e.g. patient tubing, Y Sensors, nebulizer medication cups and NAVA catheters, not included in the list above. Power consumption The power consumption depends on the operating mode and whether the internal batteries are being fast or trickle charged.  Typical minimum power consumption (no optional modules, no ongoing battery charging, normal panel backlight): 100 VA, 40 W at 230 V or 75 VA, 40 W at 110 V.  Typical maximum power consumption (with CO2, Edi and Y sensor modules, ongoing battery charging, maximum panel backlight): 200 VA, 80 W at 230 V or 170 VA, 80 W at 110 V. Noise level A-weighted sound pressure level (LpA): <40 dB, measured at a distance of 1 m. A-weighted sound power level (LWA): <51 dB. Packaging material Materials for packing:  Loading pallet.  Corrugated cardboard  Shock-absorbing material of expanded polypropylene, EPP. The packaging material complies with the demands stated by the International Plant Protection Convention (IPPC).

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2. INTRODUCTION  Only personnel trained and authorized by MAQUET shall be permitted to perform installation, service or maintenance of the system.

2. Introduction Main units ...

2-2

Patient Unit ...

2-4

User Interface ...

2-8

 Make sure to prepare the system properly before disassembling and assembling. Refer to section 'Hazard notices' in chapter 'Important'.

Software structure ... 2 - 11

 Any service or maintenance must be noted in a log book.

Breathing BRE ... 2 - 11

 After any installation, maintenance or service intervention in the system, perform a 'Pre-use check’ according to instructions in the User's Manual.  This product contains electronic and electrical components. Discard disposable, replaced and left-over parts in accordance with appropriate industrial and environmental standards.

General ... 2 - 11 Monitoring MON ... 2 - 11 Panel PAN ... 2 - 12 Power ... 2 - 12 System ID ... 2 - 12 Edi ... 2 - 12 Y Sensor ... 2 - 12 Internal communication ... 2 - 13 General ... 2 - 13 ETHERNET bus ... 2 - 13 CAN bus ... 2 - 14 I2C bus ... 2 - 15 Other digital and analogue signals ... 2 - 16

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2. INTRODUCTION

Main units The system is configured for different patient categories:  Neonatal  Pediatric  Adult (SERVO-U only). These patient categories are as standard equipped with a number of ventilation modes suitable for each category. Additional ventilation modes can be installed via SW Upgrades. The system can be divided into the following main units:  Patient Unit. The Patient Unit contains pneumatics and electronics for gas supply to the patient. Power supply and battery backup is also contained in the Patient Unit.  User Interface. The User Interface contains all controls used to set the ventilation and monitoring parameters. Ventilation parameters as well as other important information are shown on the User Interface display. The Control cable connects the User Interface and the Patient Unit. The system shown in the illustration is mounted onto the optional Mobile cart.

1. User interface

7. Patient circuit

2. Patient unit

8. Module compartment

3. Moisture trap

9. User interface control cable

4. Expiratory inlet

10. Air and O2 supply

5. Inspiratory outlet

11. Wheel lock

6. Emergency air intake

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2. INTRODUCTION Optional modules and accessories A number of optional modules can be added to the system:  Edi module (NAVA)  Y sensor module  CO2 analyzer module  Battery module (extra) There are also several accessories to be used with the system, e.g.:  Compressor Mini  Mounting kit for Compressor Mini on Mobile cart  Mobile cart  Drawer for Mobile cart  Pendant/bed holder  Shelf base  Handle  User Interface holder  Gas cylinder restrainer kit  Support Arm 178  Y piece holder and hook  Cable holder  Humidifier holder  Waterbag/IV pole  Servo DuoGuard and Servo Guard filters  Expiratory heater, Servo DuoGuard For further information regarding accessories, contact your MAQUET representative.

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2. INTRODUCTION Patient Unit Items accessible from the outside of the Patient Unit are shown in this illustration.

1. Expiratory outlet

12. Fan 1 with filter

2. AC mains power LED, blue

13. Lock for inspiratory channel cover

3. Power On LED, green

14. Gas inlet for air

4. On/Off switch

15. Gas inlet for O2

5. RS-232 connectors (#1 upper and #2 lower)

16. Inspiratory channel cover

6. Fuse for external DC power

18. Emergency air intake

7. External +12V DC inlet 8. User interface control cable connector

25. Fuse, power label: Fuse label AC mains power voltage Potential equalization terminal information

19. Module compartment

26. Gases and gas inlet pressure label: Air O2 Allowed gas inlet pressures

20. Expiratory inlet

27. Serial number label

17. Inspiratory outlet

21. Nebulizer connector

9. AC mains power supply connector with fuse

22. Module release levers

10. Potential equalization terminal

24. Expiratory inlet with moisture trap

23. Expiratory cassette

11. Alarm output connector

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2. INTRODUCTION When the Patient Unit front cover is removed, the following parts are accessible: 1. PC 1993 Ethernet switch 2. PC 1992 Monitoring 3. PC 1991 Control 4. PC 2004 Expiratory channel with the two connected PC 1781 Inspiratory and Expiratory Pressure Transducers 5. Fan 2 (behind funnel) 6. PC 1785 Expiratory channel connector 7. Expiratory valve coil 8. PC 1999 LED board and Power On/Off switch 9. PC 1998 DC/DC & Standard connectors 10. Module compartment including PC 1995 Plug & Play back-plane 11. AC/DC Converter 12. Fan 1 13. Mains power supply inlet

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2. INTRODUCTION 14. PC 1990 Main back-plane. The PC boards, as listed above are directly or indirectly connected to the PC 1990 Main back-plane.

The upper part of the Patient Unit contains the inspiratory section and the expiratory section. The main parts of the inspiratory section are the: 15. PC 2000 Pneumatic back-plane (behind metal plate). The gas modules, the O2 Sensor/cell and the safety valve pull magnet are connected to the PC 2000 Pneumatic back-plane. 16. Two gas modules, Air and O2, for regulation of the inspiratory gas. 17. Connector muff. 18. O2 Sensor. The O2 cell (incl. bacteria filter) is an alternative to the O2 Sensor for oxygen concentration measurement. The O2 cell is not shown in the illustration. 19. Temperature sensor (inside the connector). 20. Inspiratory pressure transducer tube incl. bacteria filter, to connect the inspiratory pressure transducer. 21. Inspiratory pipe with housings for the O2 Sensor/cell and for the safety valve. 22. Safety valve.

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2. INTRODUCTION

The expiratory cassette (23) is a complete unit. It contains the following parts:  Expiratory inlet with moisture trap.  PC 1786 Expiratory channel cassette.  Ultrasonic flowmeter.  Heating foil to avoid condensation in the ultrasonic flowmeter.  Pressure transducer connection, incl. bacteria filter, to connect the expiratory pressure transducer.  Expiratory valve incl. valve membrane. The expiratory valve coil, mounted under the expiratory cassette compartment, controls the valve membrane in the cassette. PC 1786 Expiratory channel cassette inside the expiratory cassette is electrically connected to PC 2004 Expiratory channel via PC 1785 Expiratory channel connector (6).

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2. INTRODUCTION User Interface The User Interface can be mounted onto the Patient Unit but can also easily be mounted on a rail, table or shelf. The User Interface can be rotated and tilted into a suitable position. Items accessible from the outside of the User Interface are shown in this illustration.

1. Alarm indicator, light bar 2. Luminescence detector for automatic adjustment of screen brightness 3. User interface lock to prevent accidental changes during cleaning or transport 4. Extended menu/quick menu toggle 5. Cable reel for the control cable 6. Control cable (2.9 m) 7. User interface stand 8. Loudspeaker 9. Network cable port (Ethernet) 10. Control cable port 11. VGA port 12. USB port 13. Serial number label For information regarding operation of the User Interface, refer to the User's Manual.

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