SERVO-s Service Manual rev 02

Important

SERVO-s Ventilator System

Notes

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Revision 02

Important Contents

SERVO-s Ventilator System

Contents 1. Important ...

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2. Introduction ...

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3. Description of functions ...

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4. Disassembling and assembling ...

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5. Service procedures...

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6. Troubleshooting ...

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7. Preventive maintenance ...

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8. Index ...

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9. Service Manual revision history ...

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10. Diagrams ...

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Important

SERVO-s Ventilator System

Important General

Symbols used in this manual

documentation for the SERVO-s 1 • Service Ventilator System consists of: – User's 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 SERVO-s System is also available. • The SERVO-s Ventilator System is referred to as the SERVO-s throughout this manual. • There are two serial number labels on the unit: – One label is attached to the Patient Unit close to the supply gas inlets. 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 close to the On/Off switch. 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.

• 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. • With power supply connected to the SERVO-s, there are energized electrical components inside the unit. Exercise extreme caution if power supply connected and covers are removed. • Technical training. Refers to the Technical training supplied by MAQUET. • Service contract. Refers to the Service contract supplied by MAQUET.

Installation Text inside a box is used to highlight important information. • 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.

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• Only personnel trained and authorized by MAQUET shall be permitted to install the SERVO-s. The installation and handing-over procedures are described in the 'SERVO-s Ventilator System – Installation Instructions'.

Functional check • After any installation, maintenance or service intervention in the SERVO-s, perform a 'Pre-use check' according to instructions in the 'SERVO-s Ventilator System – User's Manual'.

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SERVO-s Ventilator System

Important

Important Service

Hazard notices

• The SERVO-s 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.

• Before disassembling or assembling of the SERVO-s, make sure that the: – On/Off switch is set to Off.

• It is recommended that maintenance and service is done as a part of a service contract with MAQUET.

– Gas supply is disconnected (wall and/or cylinder).

1

– Mains power cable is disconnected.

• For functionality enhancement, the latest released System SW version is always recommended. • 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. Details are found in this Service Manual, chapter 'Preventive maintenance'. • The Battery modules shall be replaced after two and a half years from their manufacturing date.

– Regular cleaning and extended cleaning of the inspiratory channel are performed. Refer to instructions in the User's Manual. • With power supply connected to the SERVO-s, 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 user interface and patient unit covers removed.

• The internal Lithium batteries (on PC 1771 and PC 1772) shall be replaced every five years.

To the responsible service personnel

• Worn-out batteries must be recycled or disposed of properly in accordance with appropriate industrial and environmental standards.

• The contents of this document are not binding. If any significant difference is found between the product and this document, please contact MAQUET for further information.

• This product contains electronic and electrical components. Discard disposable, replaced and left-over parts in accordance with appropriate industrial and environmental standards.

• We reserve the right to modify products without amending this document or advising the user.

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

• Only personnel trained and authorized by MAQUET shall be permitted to perform installation, service or maintenance of the SERVO-s. Only MAQUET genuine spare parts must be used. 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. • The device complies to standards and requirements as stated in the 'SERVO-s Ventilator System – User's Manual'.

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Important

SERVO-s Ventilator System

Important Environmental declaration

Construction materials

1 Purpose This environmental declaration is for a SERVO-s

The construction materials used in SERVO-s in % of the total weight.

base unit. Letters codes within brackets refers to the Functional Block Diagram in chapter Diagrams.

Metal – total 72.5% • Aluminium 70% • Steel, zink, brass 2.5%

Components with special environmental concern Components listed below shall be disposed of in accordance with appropriate industrial and environmental standards.

Polymeric material – total 8% • PA (Polyamide) • POM (Polyoxymethylene)

Printed circuit boards

• SI (Silicone)

• PC 1771 Control, including a Lithium battery (C)

• TPE (Thermoplastic elastomer)

• PC 1772 Monitoring, including Lithium battery (M)

• PUR (Polyurethane)

• PC 1777 Panel including Backlight Inverter (U)

• ABS (Acrylicnitrilebutadienstyrene)

• PC 1781 Pressure transducer, 2 each (T)

• EPDM (Ethylenepropylenedienemonomer)

• PC 1784 Expiratory channel (F)

• PTFE (Polytetrafluoroethylene)

• PC 1785 Expiratory channel connector (E)

• FPM (Fluororubber)

• PC 1786 Expiratory channel cassette (E)

• NBR (Nitrilerubber)

• PC 1860 Main back-plane

• PP (Polypropylene)

• PC 1861 Pneumatic back-plane (I)

• PVC (Polyvinyl chloride)

• PC 1862 DC/DC & Standard connectors (P)

• PS (Polystyrene)

• PC 1863 Power control (P) Electronics – total 19.5% Other electronics

• Battery modules Nickel-Metal Hydride

• TFT assembly including backlight (U)

• Printed circuit boards, cables etc.

• Touch screen (glass) (U) • O2 cell, containing caustic lime and lead (Pb) (I)

Others – very small amounts

• O2 Sensor, containing PC boards (I)

• Filter paper of fibre glass

• Gas module Air, containing multiple PC boards (I) • Gas module O2, containing multiple PC boards (I) • AC/DC Converter, containing PC boards (P) • Expiratory cassette (E) • Expiratory valve coil (E) • Safety valve pull magnet (I) • Battery modules Nickel-Metal Hydride (P)

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SERVO-s Ventilator System

Important

Important Articles of consumption

Noise level

1. Bacteria filter

Less than 50 dBA.

1

2. Filters for the gas modules 3. Filter for the inspiration pressure transducer

Packing materials

4. Filter for the O2 cell (if applicable)

The amounts of packing materials will vary depending on customer adaptation.

5. Nozzle units for the gas modules 6. Battery modules

Materials for packing:

7. Lithium batteries

• Loading pallet. Fulfils the USA requirements 7 CFR 319.40 May 25’th 1995.

8. Expiratory cassette 9. Expiratory cassette membrane

• Corrugated cardboard

10. O2 cell (if applicable) 11. Backlight lamps.

• Shock-absorbing material of expanded polyethylene, EPE, or expanded polypropylene, EPP.

Item 1: Consumption approximately 250 pcs/year.

Product End-of-Life

Items 2 – 5: Changed approx. every 5.000 hours.

For scrapping information, refer to the document 'SERVO-s Ventilator System – Product End-of-Life Disassembly Instructions.

Items 6: Changed approx. every 12.500 hours. Items 7: Changed approx. every 25.000 hours. Items 8 – 11: Changed when needed. Power consumption The power consumption depends on the operating mode and whether the internal batteries are being fast or trickle charged. Mode

Fast charging

Trickle charging

In operation

70 W

38 W

Standby

65 W

33 W

Off

35 W

6W

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Service Manual

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SERVO-s Ventilator System

Introduction

2. Introduction

Only personnel trained and authorized by MAQUET shall be permitted to perform installation, service or maintenance of the SERVO-s.

Main units ... 2 - 2 User Interface ... 2 - 4

Make sure to prepare the SERVO-s properly before disassembling and assembling. Refer to section 'Hazard notices' in chapter 'Important'. Any service or maintenance must be noted in a log book. After any installation, maintenance or service intervention in the SERVO-s, perform a 'Pre-use check'. Refer to the 'SERVO-s Ventilator System – User's Manual' for details.

Patient Unit ... 2 - 6 SERVO-s software structure ... 2 - 9 General ... 2 - 9 Breathing ... 2 - 9 Monitoring ... 2 - 9 Panel ... 2 - 9 System ID ... 2 - 9

This product contains electronic and electrical components. Discard disposable, replaced and left-over parts in accordance with appropriate industrial and environmental standards.

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Introduction

SERVO-s Ventilator System

Main units The SERVO-s is configured for adults and pediatrics with a number of ventilation modes suitable for these patient categories. The SERVO-s 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 back-up is also contained in the Patient Unit. The Control cable connects the User Interface and the Patient Unit.

User Interface

ServoS-9000

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• 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.

Patient Unit

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Control cable

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SERVO-s Ventilator System

Introduction

A number of optional equipment can be added to the SERVO-s Ventilator System. For further information, refer to the documents listed below. Mobile cart SERVO-s

User Interface panel cover

• SERVO-s – User's manual

• SERVO-s – User's Manual

• Mobile cart, SERVO-s – Installation Instructions

• User Interface panel cover – Installation Instructions

2

Shelf base SERVO-s Loudspeaker booster kit

• SERVO-s – User's Manual • Shelf base, SERVO-s – Installation Instructions

• Loudspeaker booster kit – Installation Instructions

Support Arm 176/177

Isolation shield with drip guard

• SERVO-s – User's Manual

• Isolation shield with drip guard – Installation Instructions

• Support Arm 176/177 – Installation Instructions Gas cylinder restrainer SERVO-s • SERVO-s – User's manual • Gas cylinder restrainer, SERVO-s – Installation Instructions Aeroneb Pro • Aeroneb Pro – Instruction Manual • Aeroneb Pro – Installation Instructions Compressor Mini • SERVO-s – User's Manual • Compressor Mini – Operating Manual • Compressor Mini – Service Manual • Compressor Mini – Installation Instructions Alarm output connector • SERVO-s – User's Manual • Alarm output connector – Reference Manual Humidifier, Humidifier Holder and Humidifier Holder for rail • SERVO-s – User's Manual • Humidifier – Operating Manual • Humidifier Holder – Installation Instructions Waterbag pole • Instructions mounted on the pole. Revision 02

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Introduction

SERVO-s Ventilator System

ServoS-9002

2

User Interface 10. Loudspeaker grid.

Items accessible from the outside of the User Interface are shown in the above illustration.

11. Cable reel.

1. Display with touch screen.

12. PC card slot with slot cover.

2. Fixed keys for immediate access to special windows.

13. Control cable between User Interface and Patient Unit.

3. Main rotary dial.

14. Service connector, for PC.

4. Special function keys.

15. On/Off switch and switch cover, version discontinued in production Q2 2007.

5. Direct access knobs.

16. On/Off switch and switch cover, version introduced in production Q2 2007.

6. Mains indicator (green). 7. Standby indicator (yellow).

17. Locking arm, tilting.

8. Start/Stop (Standby) ventilation key. 9. Luminescence detector, adjusts display brightness automatically. On User Interface of Type 1, the detector is placed in the upper left corner. On User Interface of Type 2, the detector is placed above the Fixed keys in the upper right corner.

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18. Serial number label. The serial number stated on this label is the ID number of the User Interface. This serial number must always be refered to when ordering service, spare parts, etc for the User Interface. For further information regarding operation of the User Interface, refer to the User's manual.

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SERVO-s Ventilator System

Introduction

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ServoS-9003

ServoS-9004

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When the front panel section is removed from the rear cover, the following parts are accessible: 1. Touch screen incl. frame. 2. TFT Display. 3. Backlight lamp. 4. PC board Backlight inverter. 5. PC 1777 Panel including PC Card slot. 6. Loudspeaker. 7. Main rotary dial (rotary encoder with switch). 8. Direct access controls (rotary encoder). The illustration above shows User Interface of Type 2.

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Introduction

SERVO-s Ventilator System

ServoS-9005

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Patient Unit Items accessible from the outside of the Patient Unit are shown in the illustration above. All labels attached to the rear side of the Patient Unit are described in the User's Manual.

8. Connector for external +12V DC power supply.

1. Expiratory outlet.

11. Equipotentiality terminal.

2. Gas module for Air.

12. Inspiratory outlet.

3. Gas module for O2.

13. Expiratory inlet.

4. Internal fan with filter.

14. Serial number label. 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'. This serial number must always be refered to when ordering service, spare parts, software updates/upgrades, etc.

5. Control cable connector. 6. Serial port for data communication (RS 232). 7. Alarm output connector (optional).

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9. Fuse F1 for external +12V DC power supply. 10. Mains supply connector incl. fuses F11 and F12.

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Introduction

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When the Patient Unit main cover is opened, the following parts are accessible: 1. The inner part of the two gas modules including their nozzle units. 2. Connector muff. 3. Inspiratory pressure transducer tube, incl. bacteria filter, to connect the inspiratory pressure transducer. 4. Inspiratory pipe with housings for the O2 Sensor/ cell and for the safety valve. 5. O2 cell incl. bacteria filter. 6. O2 Sensor. Alternative to the O2 cell for oxygen concentration measurement.

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ServoS-9108

ServoS-9012

7. PC 1861 Pneumatic back-plane (covered by the metal plate). The gas modules, the O2 Sensor/cell and the safety valve pull magnet are connected to PC 1861.

When the Patient Unit main cover is removed, the following parts are accessible: 8. AC/DC Converter. 9. PC 1772 Monitoring. 10. PC 1771 Control. 11. PC 1863 Power control. 12. PC 1862 DC/DC & Standard connectors. 13. PC 1860 Main back-plane. The PC boards listed above are connected to PC 1860 Main backplane. 14. Battery modules.

ServoS-9013

15. Internal fan.

.

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Introduction

SERVO-s Ventilator System

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When the Patient Unit side cover is removed, the following parts are accessible: 16. PC 1784 Expiratory channel with the two connected PC 1781 Inspiratory and Expiratory Pressure Transducers. 17. PC 1785 Expiratory channel connector. 18. Expiratory valve coil.

ServoS-9014

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The expiratory cassette (19) is a complete unit. It contains the following parts: • Expiratory inlet with moisture trap. • PC 1786 Expiratory channel cassette. • Ultrasonic flowmeter. • Heating foil to keep a stable temperature in the expiratory gas. • Pressure transducer connection, incl. bacteria filter, to connect the expiratory pressure transducer. • Expiratory valve incl. valve membrane. • Expiratory one-way valve.

ServoS-9015

The expiratory valve coil, mounted under the expiratory cassette compartment, controls the valve membrane in the cassette.

ServoS-9016

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PC 1786 Expiratory channel cassette inside the expiratory cassette is electrically connected to PC 1784 Expiratory channel via PC 1785 Expiratory channel connector (17).

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SERVO-s Ventilator System

Introduction

SERVO-s software structure General

Breathing

The SERVO-s software installed in the ventilator will contain all available system functionality. The software is separated into different subsystems and stored on some of the PC boards. The separation of the software is handled by the installation program.

The Breathing SW controls the delivery of gases to the patient. This subsystem is responsible for the breathing system, that is:

The SERVO-s software is divided into the following software subsystems:

• Ventilation control and regulation • Inspiratory channel

2

• Expiratory channel The Breathing SW is stored on PC 1771 Control and PC 1784 Expiratory Channel. The software must be re-installed if PC 1771 or PC 1784 is replaced. New software can be installed via a SW Service Release.

• Breathing • Monitoring • Panel

The Breathing SW is executed by microprocessors on PC 1771 and PC 1784.

• System ID

Monitoring The Monitoring SW controls all monitoring and alarm functions in the system, including trends of measured values (trend data not available in SERVO-s v1.0). Events, such as alarms and change of settings will also be logged. PC 1777

The Monitoring SW is stored on PC 1772 Monitoring. The software must be re-installed if PC 1772 is replaced. SW related to Monitoring is also stored in the O2 Sensor. New software can be installed via a SW Service Release.

PANEL SW

The Monitoring SW is executed by the microprocessor on PC 1772.

PC 1862

MONITORING SW PC 1772

ServoS-9017

BREATHING SW PC 1771 PC 1863 BATTERY BATTERY

INSP. OUTLET

EXP. INLET PC 1785

AC/DC CONVERTER

PC 1860 SYSTEM ID SW

Panel

PC 1861 PC 1781 PC 1781

BREATHING SW PC 1784

The Panel SW controls all user interaction, as well as software updating to all subsystems via the PC Card interface. The Panel SW is stored on PC 1777 Panel. The software must be re-installed if PC 1777 is replaced. New software can be installed via a SW Service Release. The Panel SW is executed by the microprocessor on PC 1777.

System ID The System ID SW is a configuration file, stored on PC 1860 Main Back-Plane, that is unique for each ventilator. The System ID SW will enable the functions selected for this ventilator. To change the functions of the ventilator, a new System ID SW can be installed via an Option Upgrade. When replacing PC 1860 Main Back-Plane, a spare part that is factory programmed for the concerned ventilator must be used. Revision 02

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Introduction

SERVO-s Ventilator System

Notes

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Service Manual

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SERVO-s Ventilator System

Description of functions

3. Description of functions

Only personnel trained and authorized by MAQUET shall be permitted to perform installation, service or maintenance of the SERVO-s.

About this chapter ... 3 - 2 Memory types used in the SERVO-s ... 3 - 2

Make sure to prepare the SERVO-s properly before disassembling and assembling. Refer to section 'Hazard notices' in chapter 'Important'. Any service or maintenance must be noted in a log book. After any installation, maintenance or service intervention in the SERVO-s, perform a 'Pre-use check'. Refer to the 'SERVO-s Ventilator System – User's Manual' for details. This product contains electronic and electrical components. Discard disposable, replaced and left-over parts in accordance with appropriate industrial and environmental standards.

User Interface ... 3 - 2 User Interface controls ... 3 - 2 PC 1777 Panel ... 3 - 2 Loudspeaker ... 3 - 2 Backlight Inverter ... 3 - 3 Touch screen including frame ... 3 - 3 TFT Display with Backlight ... 3 - 3 Patient unit ... 3 - 3 Inspiratory section ... 3 - 3 Expiratory section ... 3 - 6 PC 1860 Main back-plane ... 3 - 8 Pressure transducers ... 3 - 8 PC 1771 Control ... 3 - 8 PC 1772 Monitoring ... 3 - 9 PC 1784 Expiratory Channel ... 3 - 9 Power supply ... 3 - 9 Control cable ... 3 - 11 Optional equipment ... 3 - 12 Alarm output connector ... 3 - 12 Loudspeaker booster kit ... 3 - 12 Isolation shield with drip guard ... 3 - 12

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Description of functions

SERVO-s Ventilator System

About this chapter

PC 1777 Panel

This text refers to the Functional Main Blocks diagram in chapter 'Diagrams'.

Some features included on PC 1777 Panel are:

Memory types used in the SERVO-s

• PC Card Slot intended for connection/insert of a PC Card. PC Cards are used to:

• SIMM (Single In-line Memory Module) mounted on its connector P77. Memory type: SDRAM

There are four different types of memories used in the SERVO-s: • Flash memory. For System SW storage. Present on PC 1771, PC 1772, PC 1777, PC 1784 and in the O2 Sensor. The System SW can be re-installed/ updated using a SW Service Release. RAM. For temporary storage of software and data. 3 • Present on PC 1771, PC 1772 and PC 1777. • Non-volatile memory. RAM with battery backup. For settings, trends and logs. Present on PC 1771 and PC 1772.

– Download software into the different flash memories situated on PC-boards marked μP and into the EEPROM on PC 1860 Main back-plane. – Transfer patient and system data for further transfer to a computer. – Service purpose. • Microprocessor μP on this board includes control of the functions of the User Interface. • ID-PROM: The ID information can be read by the SERVO-s.

• EEPROM. For PC board information, configuration, calibration data, etc. Present on almost all PC boards and in the O2 cell. In the O2 Sensor, an EEPROM is emulated by the Flash memory.

• On/Off switch: Switch to Power up or Power down the SERVO-s . Refer to section 'Power supply'. A new design of the On/Off switch and the switch cover was introduced Q2 2007. Refer to chapter 'Disassembling and assembling' for further information.

User Interface

• Connection for PC (P86): Ethernet port intended for test and service purpose. Connected via a service cable. For future options.

Functional Main Blocks diagram marking: 'U'. There are two different versions of the User Interface. In this manual, they are described as: • Type 1 – Up to User Interface S/N 201200 (SERVO-s S/N 02000).

There are two different versions of PC 1777, Type 1 and Type 2. The PC 1777 spare part is not compatible between the two versions.

• Type 2 – User Interface S/N 201201 (SERVO-s S/N 02001) and higher. There is no difference in the clinical operation between the two versions, but the electronics inside the User Interface differs. As a consequence, some of the spare parts are not compatible between the two versions. Further information can be found below and also in the SERVO-s Spare Parts List.

Setting of different parameter input values is made with the help of the following different interface devices: • Main Rotary Dial (rotary encoder with switch). • Direct Access Knob, 4 each (rotary encoders). • Membrane buttons. Integrated parts of the Touch screen assembly.

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For PC 1777 of Type 2, System SW version V2.00.04 or higher is required. Note: The System SW must be re-installed if PC 1777 is replaced.

Loudspeaker For generation of sound, e.g. alarm. Connected to P72 on PC 1777 Panel.

User Interface controls

• Touch screen.

• Microphone used to monitor sounds from the Loudspeaker.

The loudspeaker generates different tones with individual sound volumes. At startup and during Preuse check the function of the loudspeaker is monitored by the microphone on PC 1777. During operation it is continuously monitored through current sensing. With the optional accessory 'Loudspeaker booster kit', the alarm sound is amplified. Refer to section Optional equipment.

Service Manual

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