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SIEMENS Servo I Ventilator Service Manual

1. On Off switch is set to Off Battery modules are disconnected The Servof System is cleaned according to instructions in the User s manual chapter Routine cleaning and chapter Regular maintenance section Extended cleaning of insp channel With power supply connected to the Servo 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 user interface and patient unit covers removed Siemens Elema AB E382 E407E 061 01 01 02 Servo Important Important Installation Only personnel trained and authorized by Siemens shall be permitted to install the Servo System The installation and handing over procedures are described in the Servo Ventilator System Installation Instructions Functional check e After any installation maintenance or service intervention in the Servo System perform a Pre use check according to instructions in the Servo Ventilator System User s manual Service e The Servo System must be serviced at regular intervals by personnel trained and authorized by Siemens Any maintenance or service must be noted in a log book provided e t is recommended that maintenance and service is done as a part of a service contract with Siemens e Preventive maintenance must be performed at least once every year as long as
2. total 9 e PA Polyamide e POM Polyoxymethylene e S Silicone e TPE Thermoplastic elastomer e PUR Polyurethane e ABS Acrylicnitrilebutadienstyrene EPDM Ethylenepropylenedienemonomer PTFE Polytetrafluoroethylene e FPM Fluororubber e NBR Nitrilerubber e PP Polypropylene e PVC Polyvinyl chloride e PS Polystyrene Electronics total 14 e Accumulators Nickel Metalhydride e Printed circuit boards cables etc Others very small amounts e Sterile filter paper of glass fibre 1 6 Siemens Elema AB E382 E407E 061 01 01 02 Servo Important Important Articles of consumption 1 Bacteria filter Filters for the gas modules Filter for the inspiration pressure transducer Filter for the O cell Nozzle units for the gas modules oa RO N Expiratory cassette Item 1 Consumption approximately 250 pcs year Items 2 5 Changed every 5000 hours Item 6 Changed when needed Power consumption Normal use no extra internal or external devices used e On 60 W e Stand By 42 W Noise level Less than 50 dBA Packing materials The amounts of packing materials will vary depending on customer adaptation Siemens Elema is a member of the Swedish REPA register No 5562378850 Materials for packing e Loading pallet Fulfils the USA requirements 7 CFR 319 40 May 25 th 1995 e Corrugated cardboard e Stretch film of Polyethylene PE e Shock ab
3. uuv cu1lssscsssrcii 7 3 Preventive maintenance Kit 7 3 Performing the Preventive maintenance 7 3 Only personnel trained and authorized by Siemens shall be permitted to perform installation service or maintenance of the Servo System 4 Make sure that the Servo System is properly cleaned before performing any service or maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual Any service or maintenance must be noted in a log book All disposable parts must be discarded according to localregulations and in an environmentally acceptable way After any service or maintenance of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s Manual for details E382 E407E 061 01 01 02 Siemens Elema AB 7 1 Preventive maintenance Servo 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 In some parts of the Preventive maintenance as described in this chapter the software Field Service System FSS is a requirement Some optional equipment used in the Servo System but not covered by this Service Manual may also demand maintenance actions Refertothe equipments documentation These uni
4. z the Biomed menu will be of main interest for the Leste alarms gt Dias Sano og hospital Biomed and for the Siemens CSE Test results Possible selections Latest logs Preventive Maintenance Selected timentem Service report history E Service Event Log L Report PM Enters Date for a performed Preventive Maint into the Service Log s v P lid Displays log lists Useful during troubleshooting View configuration mnl General gt Displays the default user configuration Service Log Units LI aramis Displays log lists Useful during troubleshooting Infant alarm limits E L Displayed values Report PM Service log H Edit configuration This button must be pressed when a Preventive Maintenance has been performed This will reset the L Aout alarm mts user deraut configuration setup timer that indicates operating hours until next infant alarm limits gt Preventive Maintenance L Displayed values 4 Set date and clock H Date and time setup Panel Locks all user input functions on the control unit lock Press Main screen fixed key to unlock Change pat Available only in Servo i Universal Switches between category Adult and Infant patient category only in running mode 5 8 Siemens Elema AB E382 E407E 061 01 01 02 Servo Service procedures View configuration Displa
5. 3 from PC 1784 e Disconnect the tubes 4 and 5 from PC 1784 e Disconnect the inspiratory pressure tube from the inspiratory pipe inside the inspiratory section not visible in this illustration e Remove the two screws 6 e Lift off the cassette compartment 1 x is o x a All parts behind the cassette compartment are now accessible e g the e PC 1780 Pneumatic back plane 7 e Safety valve pull magnet 8 4 6 Siemens Elema AB E382 E407E 061 01 01 02 Servo Disassembling and assembling To remove the inspiratory section cover 1 e Loosen the screw 2 e Lift off the cover 1 All parts in the inspiratory section are now accessible x 5 x n To remove the inspiratory pipe Lower the locking catch 1 and lift off the O cell e Disconnect the inspiratory pressure tube 2 e Depress the two catches 3 one at each side of the safety valve housing and lift off the inspiratory pipe 4 E382 E407E 061 01 01 02 Siemens Elema AB 4 7 Disassembling and assembling Servo To remove the gas modules e Loosen the screw 1 e Lift off the gas module bracket 2 x S o x 2 a e 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 The connector muff must not be pushed too far onto the nozzle units 2 Note 2 The gas modules used in Servo are factory
6. Before starting any software upgrade or update check the version of the installed Servo system software see System version in the Status window and the version of the Servoz system software stored on the PC Card It is not recommended to install Servo system software with lower version number than already installed in the Servoz e After any installation maintenance or service intervention in the Servo Ventilator System perform a Pre use check according to instructions in the Servo Ventilator System User s manual e To insert remove the PC Card 1 Open the slot cover Insert and gently push the PC Card in place Press the eject button and pull out the PC Card Software information There are two different intentions for software installation Option upgrade An option upgrade will change the function of the Servo Ventilator System e g change patient category configuration and or add new ventilation modes An option upgrade is individually created for each ventilator and can only be installed on this ventilator Serial number of the ventilator must be stated when ordering an option upgrade Option upgrade is distributed on an Option card As the option upgrade will change the functions of the ventilator a new Servo Ventilator System User s manual will be enclosed Option upgrades for several Servo can be distributed on one Option card If so a corresponding number of User s manuals wil
7. Each Gas MobuLe must not be disassembled further than described in chapter Preventive maintenance Gas inlet The gas inlet nipples are quick couplings where gas supply is connected to the ventilator The design of the inlet nipples and their color markings vary according to the standard chosen Gas is to be connected from hospital central gas supply or from gas cylinders The Air supply may be connected from a compressor for medical air Filter The FiLTER protects the ventilator from particles in the gas delivered to the Gas MopuLES The filter must be replaced during the Preventive maintenance The filter housing and the filter cover are provided with matching guide pins These guide pins prevent mounting of the filter cover with gas inlet nipple on the wrong module A non return valve for the gas inlet is located in the filter cover This valve will suppress short pressure drops in the gas supply The non return valve is also designed to slowly evacuate compressed gas from the module if the gas supply to the module is disconnected Inspiratory valve temperature sensor The temperature of the supplied gas is measured by the INsPIRATORY VALVE TEMPERATURE SENSOR This sensor is situated in the gas flow The output signal from this sensor is used to compensate for the gas density variations due to temperature Supply pressure transducer The pressure of the supplied gas is measured by the SUPPLY PRESSUR
8. Monitoring 34 Gas module O or PC 1772 Monitoring 35 PC1772 Monitoring 256 PC1771 Control 512 PC 1777 Panel 784 N A 1024 PC 1784 Expiratory channel 1025 PC 1786 Expiratory channel cassette N A 27 TECH ERR BUZZER FAILURE 1 Replace PC1772 Monitoring Note If the Patient Unit front cover is removed this error may be activated 6 8 Siemens Elema AB E382 E407E 061 01 01 02 Servo Troubleshooting 28 PANEL AUDIO FAIL 1 Replace loudspeaker 2 Replace PC1777 Panel Note If the User Interface rear cover is removed this error may be activated 29 LITHIUM_BATTERY_LOW 1 Replace battery on PC1772 Monitoring 30 BARO_PRESS_TOO_LOW 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 on a high altitude 31 BARO_PRESS_TOO_HIGH 1 Check calibrate barometer 2 Replace PC1772 Monitoring 32 ALARM_ID_MISMATCH N A 33 BRE_NODE_CONNECT_TIMEOUT 1 Replace PC1771 Control 34 PANEL_NODE_CONNECT_TIMEOUT 1 Check control cable 2 Replace PC1777 Panel 35 EXP_FLOW_MTR_NODE_CONNECT_ 1 Replace PC1784 Expiratory channel TIMEOUT 37 EXP_FLOW_MTR_RANGE_ERR N A 38 BARO_UPPER_LIMIT_EXCEEDED 1 Technical error code corresponding to error code 30 39 BARO_LOWER_LIMIT_EXCEEDED 1 Technical error code corresponding to error code 31 40 INVALID_METRIC N A 41 REAL_TIME_CLOCK_ERR 1 Replace PC1772
9. To remove the patient unit front cover 1 e Remove the screw covers and the screws 2 e Remove the two ventilation covers 3 e Remove the two screws 4 E x o o 2 3 Carefully lift off the patient unit front cover 1 4 4 Siemens Elema AB E382 E407E 061 01 01 02 Servo Disassembling and assembling e All parts behind the patient unit front cover are now accessible Note When replacing PC 1771 Control PC 1772 Monitoring and PC 1784 Expiratory Channel it can be necessary to re install the system software For further infor mation refer to section Replacing PC boards in this chapter With power supply connected to the Servo System there are energized electrical components inside the unit e g 150 V at the AC DC Converter All personnel must exercise extreme caution if fault tracing or adjustments are performed with power supply connected and with the patient unit covers removed x 5 5 XA n Note When replacing PC 1770 1 The ventilators ID Serial No configuration time stamp for preventive maintenance etc is stored in an EEPROM on PC 1770 Thus PC 1770 can only be replaced by a factory preset PC board For further information refer to chapter Description of functions TA E382 E407E 061 01 01 02 Siemens Elema AB 4 5 Disassembling and assembling Servo To remove the expiratory cassette compartment 1 e Disconnect the connectors 2 and
10. e Pressure transducer connection incl bacteria filter to connect the expiratory pressure transducer e Expiratory valve incl valve membrane e Expiratory one way valve The expiratory valve coil mounted under the expiratory cassette compartment controls the valve membrane in the cassette 2 6 Siemens Elema AB E382 E407E 061 01 01 02 Servo Introduction Servo software structure PC1777 PANEL PANEL S W PC1784 BREATHING S W PC1772 MONITOR S W SYSTEM ID PC1770 S W SVX9143X General The Servo software installed in the ventilator will contain all available system functionality The soft ware 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 Servo software is divided into the following software subsystems e Breathing e Monitor e Panel e System ID Breathing The Breathing S W controls the delivery of gases to the patient This subsystem Is responsible for the breathing system that is e Ventilation control and regulation e Inspiratory channel e Expiratory channel e Nebulizer control software option The Breathing S W is stored on PC 1771 Contro and PC 1784 ExPIRATORY CHANNEL New software can be installed via a System software update The system software must be re installed if PC 1771 or PC 1784 is replaced The Breathing S W is executed by microprocessors on PC 1771 an
11. must always be concidered during troubleshooting General Before starting troubleshooting try to eliminate all possibilities of operational errors If the malfunction remains use the troubleshooting guides below as well as the information in chapter Description of functions to locate the faulty part Perform actions step by step and check that the malfunction is eliminated When the fault is corrected carry out a complete Pre use check as described in the Servo Ventilator System User s manual The troubleshooting guides below are focused only on technical problems Information about clinical related problems can be found in the Servo Ventilator System User s manual 6 2 Siemens Elema AB E382 E407E 061 01 01 02 Servo Troubleshooting Pre use check The Servo System demands the user to start the automatic Pre use check at every start up of the system It is also possible to select the Pre use check via the Standby menu Test The Servo Ventilator System User s Manual describes how to perform this Pre use check The Pre use check description on the following pages gives a more detailed information about the Pre use check This information can be used e g during troubleshooting of the Servo System Test description Recommended action if the test fails During system startup Start Pre use check Internal technical tests e S W download e S W check e Reading
12. power supply ODN O OI FWD Optional connector 10 11 12 13 14 15 16 17 18 Connection to the User Interface control cable 9 pole serial port for data communication RS 232 Expiratory outlet Inspiratory section cover Expiratory inlet Module unit for connecting optional modules e g up to six Battery modules Servo Connector for Servo Ultra Nebulizer Servot Inspiratory outlet Serial number label The serial number stated on this label is the ID number of the unit This serial number must always be refered to when ordering service spare parts software updates upgrades etc 2 4 Siemens Elema AB E382 E407E 061 01 01 02 Servo Introduction PC 1772 PC 1784 Expiratory Monitoring Expiratory valve PC 1781 PC1771 channel PC 1781 coil Insp press Control Exp press transducer transducer SVX9101X Plug amp Play AC DC Internal Mains PC 1778 Module incl Converter fan supply Standard PC 1775 inlet Connectors Plug and Play amp DC DC back plane PC 1780 PC 1770 Pneumatic back plane Main back plane x o gt x gt When the Patient Unit front cover is removed the following parts are accessible e PC 1772 Monitoring e PC 1771 Control e PC 1784 Expiratory channel with the two connected PC 1781 Inspiratory and Expiratory Pressure Transducers e Expiratory valve coil Plug and Play Module incl PC 1775 Plug and Play ba
13. pressure transducer C Bacteria filter for the O cell D Nozzle units for the gas modules SVX9004X Performing the Preventive maintenance Prepare the unit as described in section Preparations in this chapter Inspiratory section e Loosen the screw 1 and lift off the inspiratory section cover 2 x 5 E a E382 E407E 061 01 01 02 Siemens Elema AB 7 3 Preventive maintenance Servo Disconnectand lift off the inspiratory pressure Lower the locking catch 1 and lift off the O cell 4 tube 2 x o e o x a e Press the two latches 3 one at each side of the safety valve housing and lift off the inspiratory pipe 4 including the connector muff 5 e Replace the filter 6 for the inspiratory pressure transducer Make sure that the filter is correctly seated into the rubber ring Note This filter may already be replaced as a part of the Extended cleaning of Inspiratory channel performed prior to the Preventive maintenance SVX9140X gt 7 4 Siemens Elema AB E382 E407E 061 01 01 02 Servoz Preventive maintenance Replace the bacteria filter 1 for the O cell SVX9141X e Loosen the screw 1 e Lift off the gas module bracket 2 x Ur 5 X CD e Pull out and lift off both gas modules 15X E382 E407E 061 01 01 02 Siemens Elema AB 7 5 Preventive maintenance Servo SVX9124X SVX9005X
14. within the Menu all users have access to all Pressure alarm Upper functions However the Biomed submenu is Minute Volume alarm Lower and Upper K 3 Respiratory Pate alarm Lower and Upper intended only for Technical Personnel End Expiratory Pressure alarm Lower Alarm sound level 20 100 HE History Displays a date and time stamped Alarm history log M enu flowchart Tt Silence or pre silence alarms for two minutes M a A 5 Same function as the fixed key 4 Pressing the fixed key Menu will open the Menu EPA AAA a window on the User Interface Possible selections in li The calculation of the circuit Compliance value is z O gt performed during Pre use check this window as described in the flowchart are The calculated value is displayed in the window To activate or to deactivate select the appropriate soft key e Al arm Copy Copy data to PC Card data The following data is copied e Complience compensation Event log Trends Pre use check log o Copy data e Biomed I Biomed Service e Panel lock Event log e Change patient category available only in ventilation Al gt pi arms Displays Event logs mode Ventilator settings gt Possible selections Latest logs P Selected time interval Apnea periods Immediate functions gt Biomed Of the possible selections in the Menu window
15. 01 01 02 Siemens Elema AB 3 5 Description of functions Servo Expiratory section Functional Main Blocks diagram marking E The main block EXPIRATORY SECTION conveys the breathing gas from the patient breathing system to the ExPIRATORY OUTLET It comprises e Measurement of expiratory flow e Connection for measurement of expiratory pressure e Controlling element for the regulation of expiratory pressure Expiratory cassette The expiratory gas conveying parts and PC 1786 EXPIRATORY CHANNEL CASSETTE are integrated into one part the EXPIRATORY CASSETTE which can be easily removed for cleaning or exchange See Servo Ventilator System User s manual The expiratory cassette can be interchanged between different Servo systems Always perform a Pre use check after exchanging the expiratory cassette An ID PROM is integrated into each expiratory cassette Its ID information and remaining lifetime can be read by the Servo System PC 1786 Ultrasonic Expiratory Ultrasonic transducer channel cassette transducer Inlet SVX9121X ow mn Bacteria foil filter Expiratory pressure tube connector Heating Expiratory inlet 22 mm 10 mm tube connector for the expiratory tube of the patient breathing system The inlet is designed to make condensed water drip out and allow use of a water trap for such water to be collected Expiratory inlet bacteria filter can be connected to protect the
16. 4 EXT 12V DC PCT No P9 SUPPLY INPUT U E FUSE MONITORING N22 CC N3 lt SSS oo AGDG pyu muummumuumumum ja nun umumumummummummmu PC1775 mumuumumummum R P7 ID PROM I NTERNA PI FAN AC DC CONVERTER CONVERTER FUNCTIONAL MAIN BLOCKS CONTROL EXPIRATORY SECTION EXPIRATORY CHANNEL INSPIRATORY SECTION MONITORING POWER SUPPLY PRESSURE TRANSDUCERS USER INTERFACE OPTIONAL PC BOARD SLOT GQ Q Q o CONNECTOR CONNECTOR INCLUDING CAN BUS XX z z XK E382 E407E 061 01 01 02 Siemens Elema AB 9 3 Servo Service Manual Order No 65 43 230 E407E E382 E407E 061 01 01 02 O Siemens Elema AB Electromedical Systems Division 2001 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 Subject to alterations without prior notice Issued by Siemens Elema AB Electromedical Systems Division SE 171 95 Solna Sweden Printed in Sweden Price group 7 0501 0 5 1st English edition May 2001
17. 82 E407E 061 01 01 02 Servo Description of functions Power supply Functional Main Blocks diagram marking P The main block Power SuPPLY comprises conversion of mains power to internal power supply as well as the Module unit connections for optional Battery modules and or other optional modules The power modes in the Servo System are e At Power up i e when the On Off switch is turned On all internal voltages will be enabled e At Power down the Power supply system will deactivate the hardware signal Power_Goob H and at the same time keep the internal voltages 5 V and 3 3 V for at least 1 ms in order to let the different subsystems save their current settings in non volatile memory Power down can be caused by Turning the On Off switch Off Mains failure and no back up battery connected The system is powered from a battery but the battery voltage is too low for proper operation of the system In this Off mode only charging of Battery modules is enabled if the system is connected to mains All other circuitry is un powered In Standby all circuitry is powered from the Power supply but no breathing will be active The operator can set all parameters including breathing mode during Standby Mains inlet Appliance inlet for mains power supply including grounding connection The Servo System will automatically adjust to the connected mains power if the mains power is within spe
18. C 2 4 Gas inlet for Air 2 4 Gas inlet for O 2 4 Gas modules 2 6 3 3 4 8 Gas supply pressure transducers 7 8 Handling PC boards 4 2 nspiratory outlet 2 4 3 5 nspiratory pipe 2 6 3 4 4 7 nspiratory pressure transducer tube 2 6 3 4 nspiratory section 3 3 nspiratory section cover 2 4 4 7 nternal fan 2 4 2 5 3 9 7 7 nternal fan filter 7 7 Lithium batteries 5 5 7 9 Lithium batteries Locking arm 2 3 Locking screw 2 3 Loudspeaker 2 3 3 2 Main rotary dial 2 3 Main units 2 2 Mains inlet 2 5 3 9 Mains supply connector incl fuses F11 and F12 2 4 Memory types 3 2 Menu flowchart 5 9 Menu key 5 9 Module unit 2 4 3 9 Monitor 2 7 Non volatile memory 3 2 Nozzle units for the gas modules 7 3 O cell 2 6 3 4 On Off switch 2 3 Option upgrade 5 2 Optional connector 2 4 Optional equipment 2 2 Optional PC board slots 3 10 Panel 2 7 Patient Unit 2 2 2 4 3 3 4 4 PC 1770 Main back plane 2 5 3 7 4 5 PC 1771 Control 2 5 3 8 4 5 PC 1772 Monitoring 2 5 3 8 4 5 PC 1775 Plug and Play back plane 2 5 3 9 PC 1777 Panel 2 3 3 2 4 3 PC 1778 Standard connectors DC DC 2 5 3 9 PC 1780 Pneumatic back plane 2 5 3 5 4 6 PC 1781 Expiratory pressure transducer 2 5 3 7 PC 1781 Inspiratory pressure transducer 2 5 3 7 PC 1784 Expiratory channel 2 5 3 8 4 5 PC 1785 Expiratory channel connector 3 7 PC Card slot 2 3 Power supply 3 9 Preparations disassembling and assembling 4 2 Pressur
19. E TRANSDUCER The output signal from this transducer is amplified It is then used to calculate the absolute pressure of the gas to compensate for gas density variations due to pressure Flow transducer The gas flows through a net resistance which causes a pressure drop The pressure is measured on both sides of this net and the differential pressure value is then amplified E382 E407E 061 01 01 02 Siemens Elema AB 3 3 Description of functions Servo Nozzle unit The plastic Nozzle Unit contains a valve diaphragm The valve diaphragm controlled by the INSPIRATORY SOLENOID regulates the gas flow through the Gas MoDULE The complete plastic nozzle unit must be replaced during the Preventive maintenance After replacement allow the diaphragm to settle during approx 10 minutes before gas pressure is connected to the GAs MODULE Inspiratory solenoid The gas flow through the Gas Mopure is regulated by the INSPIRATORY SOLENOID via the NozzLe UNIT The current supplied to the solenoid is regulated so that the gas module will deliver a gas flow according to the settings on the User Interface Gas module key The Gas MobuLes are provided with a mechanical key to prevent that the module is mounted in the wrong slot The key consists of a plastic guide mounted under neath the module and a corresponding guide mounted in the patient unit Connector muff The Connector Murr connects the Gas Mopute outlet
20. EEPROM e Checksum EEPROM 1 Restart the Servo 2 Reinstall the system software Internal tests Barometer test Audio test PAN MON Checks that the barometric pressure measured by the internal barometer is within 630 1080 hPa Checks that the measured barometric pressure values differs less than 8 hPa between MON and BRE BRE MON Make sure that the Patient Unit front cover and the User Interface rear cover are correctly mounted otherwise these tests may fail Check in the Test log if it is the Panel or the Monitoring test that have failed requires FSS card f Monitoring test fails replace PC1772 Monitoring f Panel test fails replace loudspeaker or PC1777 Panel Check the Barometric pressure value in the Status window 1 If that value is within 630 1080 hPa replaced the PC 1771 Control 2 If that value is outside 630 1080 hPa replaced the PC 1772 Monitoring Gas supply pressure test Checks that the gas supply pressures Air and O measured by the internal gas supply pressure transducers are within 2 6 5 kPa x 100 2 0 6 5 bar Checks that the measured supply gas pressure values differs less than 20 mbar between MON and BRE BRE MON 1 Check that the connected gas supply pressure Air and O is within the specified range 2 Start the Servo i in a ventilation mode and check the alarms If an Air supply pressure alarm is ac
21. Main Blocks diagram Mm INSPIRATORY PIP SAFETY VALVE SAFETY VALVE OJ PULL MAGNET kb FH EXP CHANNEL CASSETT CASSETTE LB N46 ID PROM P46 EXPIRATORY I CHANNEL EXPIRATORY EXP VALVE ONE WAY U HEATNGFOIL d amp SSEB Od VALVE xiC PC1777 CO PANEL EXPIRATORY T P72 PC CARD OUTLET z amp SLOT P75 o G lt EY Sw2 D PROM o o e INSPIRATORY TEMP AE eee al SECTION I dais CONNECTION PCT780 PANEL VIEW A i INSP PRESS 1D els FROM REAR FOR PC SF O2 CELL SERVICE OUTLET p GONNECTOR MUFF N16 P NEBULIZER _ N11 l N8 P8 MODULE UNIT OPTIONAL MODULES e g BATTERY and Future options SVX9000X 01 05 09 PNEUMATI M BACK PLANE 2 ac Solo z P1 3 AIR Qo amp E GAS INLET o EXP PRESSURE TRANSDUCER PC 1781 P PC1778 P50 STANDARD MOD2 na Noor P4 CONNECTORS PC1780 up SL PC1784 amp DC DC 8 N29 ch EXPIRATORY CHANNEL dans 2 PATIENT UNIT CONTROL UNIT Bei ID PROM gt M PC1770 OPTIONAL PC1781 PC1781 PC178
22. Memory types used in the Servo 3 2 User lriterfaee s kaba fee 3 2 User Interface controls ee 3 2 PC X777 Panelza un t NE 3 2 l oudspeaker utei rade Rise 3 2 Backlight Inverter uus reete nete 3 2 Front panel screen pt 3 2 Patient unit nnee eenen ee 3 3 INSpiTatoySECtON wasz da 3 3 Expiratory section isi ninn a 3 6 PC 1770 Main back plane nnn 3 7 Pressure transducers cossen reii inen die PC 1784 Expiratory Channel 3 8 PC TZ71 Gontrol i etes 3 8 PC 19 72 MOnItOFIDIg d eternet t ds 3 8 Power supply Nt 3 9 Modules tii 3 9 Internal fan warner a te deren 3 9 Optional PC board slots pp 3 10 Control cables ee Rep 3 10 Only personnel trained and authorized by Siemens shall be permitted to perform V installation service or maintenance of the Servoi System 14 Make sure that the Servo System is properly cleaned before performing any service or maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual Any service or maintenance must be noted in a log book All disposable parts must be discarded according to local regulations and in an environmentally acceptable way After any service or maintenance of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s Manual for details E382 E407E 061 01 01 02 Siemen
23. Monitoring 42 PERSISTENT_CHECKSUM_ERR 1 Restart the Servor 2 Replace 1772 Monitoring if not LITHIUM BATTERY LOW 43 POWER COMM ERR 1 Check battery modules if connected 2 Replace PC1778 Standard connectors amp DC DC 44 ALARM LIM XOR ERR 1 Restart the Servor 2 Replace 1772 Monitoring if not LITHIUM BATTERY LOW E382 E407E 061 01 01 02 Siemens Elema AB 6 9 Troubleshooting Servo Breathing 10001 BATTERY MIN VOLTAGE 1 Replace battery on PC1771 Control 10002 BRE I2C ERROR 1 Replace PC1771 Control 10003 BRE FATAL MEMORY ERROR 1 Restart the Servol 2 Replace PC1771 Control Panel 20001 PANEL DEVICE ERROR 1 Replace PC1777 Panel 20002 PANEL BACKLIGHT BROKEN 1 Replace backlight lamps 2 Replace PC board Backlight Inverter 20003 PANEL BUTTON STUCK 1 Check user interface membrane buttons 2 Replace the touch screen 3 Replace PC1777 Panel 20004 PANEL AUDIO FAILED 1 Replace the loudspeaker 2 Replace PC1777 Panel Exp Flow Meter 40001 Technical error in Exp flow meter 1 Replace the expiratory cassette More details in the log 2 Replace PC1784 Expiratory channel 6 10 Siemens Elema AB E382 E407E 061 01 01 02 Servo Preventive maintenance 7 Preventive maintenance erc Emm 7 2 Preparations eesssssse neneneneneesensereens 7 2 EQUIP MEN 7 2 Preventive maintenance 2 1 11 1
24. NSPIRATORY SECTION The fan will start with half effect at approx 33 C and with full effect at approx 43 C E382 E407E 061 01 01 02 Siemens Elema AB 3 9 Description of functions Servo Optional PC board slots Functional Main Blocks diagram marking X For future options the Servo System is equipped with two optional PC board slots Control cable This ConTROL CABLE connects the PATIENT Unit and the User INTERFACE The cable can be partly winded up under a rubber cover on the rear of the User INTERFACE 3 10 Siemens Elema AB E382 E407E 061 01 01 02 Servo Disassembling and assembling 4 Disassembling and assembling al a r 4 2 A olali erde do 4 2 Handling PC boards nnee enen 4 2 Replacing PC boards pp 4 2 Assembling guidelines 4 2 4 3 Patient Ort isa abit 4 4 Only personnel trained and authorized by Siemens shall be permitted to perform V installation service or maintenance of the t Servoi System 14 Make sure that the Servo System is properly cleaned before performing any service or maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual Any service or maintenance must be noted in a log book All disposable parts must be discarded according to local regulations and in an environmentally acceptable way After any service o
25. On each one of the two gas modules e Unscrew the two screws 1 and lift off the cover 2 Remove the rubber sealing 3 from the old filter 4 and discard the old filter Mountthe rubber sealing on the new filter and put the new filter into the cover 2 e Mount the cover on the gas module On each one of the two gas modules Open the hatch and pull out the nozzle unit Carefully put the new plastic nozzle unit in position into the gas module and close the hatch Discard the old nozzle unit Wait 10 minutes before connecting pressure to the gas modules e Re assemble all parts inside the inspiratory section Do not mount the inspiratory section cover Note When assembling make sure that the connector muff seals around the inspiratory pipe 1 The connector muff must not be pushed too far onto the nozzle units 2 All disposable parts must be discarded according to local regulations and in an environmentally safe way 7 6 Siemens Elema AB E382 E407E 061 01 01 02 Servoz Preventive maintenance Internal fan filter Remove the internal fan filter 1 e Checkifthe filteris damaged Replace damaged filter e f 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 e Mount the new cleaned filter e Connect the mains power cable e Set the On Off switch to Standby x A Ur gt X gt CD Internalfa
26. SIEMENS Servo Service Manual E382 E407E 061 01 01 02 Important Servo Notes 1 2 Siemens Elema AB E382 E407E 061 01 01 02 Servo Contents Contents A eee renner EE EE eer chia aie sie 3 Description of functions esse aaa aaa aaa aaa aaa aaa aaa aaa aaa 4 Disassembling and assembling sss OENE DIOCECUIES sico bd A aaa dk A A uds OK AC dE GA 7 Preventive maintenance Ne E382 E407E 061 01 01 02 Siemens Elema AB 1 3 Important Servo Important General e Service documentation for the Servo Ventilator System consists of User s manual Service Manual Spare Parts List Documentation for all optional equipment included in the Servo System is also available The User s manual is an indispensable comple ment to the Service Manual for proper servicing Serial number of the unit is found on a label attached to the Patient Unit close to the supply gas inlets 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 this system version 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 nat
27. able reel PC Card slot with slot cover Locking arm rotation Locking screw alternative mounting Panel holder Control cable H OI R gt N Connection for PC service port 9 On Off switch 10 Locking arm tilting For further information regarding the User Interface controls refer to the User s manual When the front panel section is removed from the rear cover the following parts are accessible e Touch screen assembly front cover frame included e TFT Display including lamps e PC board Backlight inverter e PC 1777 Panel including PC Card slot e Loudspeaker e Main rotary dial rotary encoder with switch e Direct access controls rotary encoder PC 1777 PC Card Loudspeaker TFT Display Panel slot Touch screen assembly Direct access controls Main rotary Backlight dial inverter E382 E407E 061 01 01 02 Siemens Elema AB 2 3 Introduction Servo SVX 081Xa Patient Unit The Patient Unit can be rotated on and pulled out of the Servo Mobile cart It can also be removed from the Mobile cart and mounted onto a Servo Holder Items accessible from the outside of the Patient Unit are shown in the illustration above Handle Gas inlet for Air Gas inlet for O Equipotentiality terminal Mains supply connector incl fuses F11 and F12 Internal fan with filter Connector for external 12V DC power supply Fuse F1 for external 12V DC
28. ad software into the different flash memories situated on PC boards marked uP and into the EEPROM on PC 1770 MAIN BACK PLANE Transfer patient and system data for further transfer to a computer Service purpose e Microprocessor on this board includes control of the functions of the USER INTERFACE e D PROM The ID information can be read by the Servo System e On Off switch Switch to Power up or Power down the Servo System Refer to section Power supply e Connection for PC P86 Ethernet port intended for test and service purpose Connected via a service cable For future options e Microphone used to monitor of sounds from the Loudspeaker Loudspeaker For generation of sound e g alarm Connected to P72 on PC 1777 PANEL The loudspeaker generates different tones with overtones at different sound volume The loudspeaker is continuously supervised by the microphone on PC 1777 PANEL Backlight Inverter PC board with driving stage for backlight lamps mounted behind the TFT Display The supply voltage delivered by the Backlight Inverter is 660 V The Backlight Inverter is connected to P73 on PC 1777 PANEL Front panel screen The front panel screen comprises e Touch screen assembly e TFT Display e Backlight The Touch screen implies the touch function of the front panel screen and is interactive with information displayed on the TFT Display The front panel frame with the touch screen m
29. adjusted for this purpose When replacing gas modules make sure to use only Servo gas modules Similar gas modules intended for the Siemens SV 300 300A or Kion Systems must not be used SVX9145X 4 8 Siemens Elema AB E382 E407E 061 01 01 02 Servo Service procedures 5 Service procedures Software installation oonnnnnncocccccnnnoooocnnccnncnon os 5 2 Checking the Battery modules 5 4 Replacing the lithium batteries on PC 177 tand PG 1772 ilicet ree teens 5 5 Replacing the membrane in the expiratory cassette Nt 5 6 MENUKCY iore te dE O tas t Re DE Rab 5 9 Only personnel trained and authorized by Siemens shall be permitted to perform B 4 installation service or maintenance of the 7 Servo System 14 Make sure that the Servo System is properly cleaned before performing any service or maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual Any service or maintenance must be noted in a log book All disposable parts must be discarded according to local regulations and in an environmentally acceptable way After any service or maintenance of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s Manual for details E382 E407E 061 01 01 02 Siemens Elema AB 5 1 Service procedures Servo Software installation General e
30. alled in the Servo This check is done to detect If a new system software installation is required and or If the update must be terminated due to hardware incompatibility see Note 1 below e f a system software update is required this installation will start The installation may take up to 15 minutes However if an update is not required the installation is terminated A message will occur on the screen e When the installation is completed or found not required press the Main Rotary Dial to restart the Servo as instructed on the screen Do not remove the S W version update card The system will start up in standby mode Remove the S W version update card and close the slot cover when the Do you want to start Pre use check window appears on the screen Perform a Pre use check according to instructions in the Servo Ventilator System User s manual Note 2 The option upgrade is possible only if the new configuration on the Option card matches the serial number of the Servo If not the option upgrade will not be installed and the system will start up in standby mode Remove the Option card when the Do you wantto start Pre use check window appears on the screen Such installation is equal to a system software update E382 E407E 061 01 01 02 Siemens Elema AB 5 3 Service procedures Servo Checking the Battery modules Check the manufacturing date of the Battery module Manu
31. ance must be performed Refer to chapter Pre ventive maintenance Pressure transducers Functional Main Blocks diagram marking T PC 1781 Inspiratory pressure transducer The pressure conveyed via the pressure tube connected to this block is led to and measured by its differential pressure transducer With differential reference to the ambient pressure the output signal is proportional to the measured pressure thus giving a linear measurement in the range 40 cm H O to 160 cm H O Technical limitation Pressure exceeding 200 cm H O must be avoided PC 1781 Expiratory pressure transducer Function identical to PC 1781 INSPIRATORY PRESSURE TRANSDUCER E382 E407E 061 01 01 02 Siemens Elema AB 3 7 Description of functions Servo PC 1784 Expiratory Channel Functional Main Blocks diagram marking F The main block ExPIRATORY CHANNEL comprises microprocessor control to achieve measurement of expiratory flow The output signal Exe FLow is used in the main block CONTROL Electronics including microprocessor uP for handling of e All electronic connections to and from the EXPIRATORY SECTION functions e Measurement of airway pressures in both INSPIRATORY SECTION and EXPIRATORY SECTION e Control of the SAFETY Valve functions in the INSPIRATORY SECTION Includes also an ID PROM The ID information can be read by the Servo System PC 1771 Control Functional Main Blocks diagram markin
32. ards This actuates the SAFETY VALVE to be opened and the inspiratory gas is let out from the INSPIRATORY Pipe via the SAFETY OurTLET thus enabling a decrease in the inspiratory pressure The SAFETY OuTLET is covered by a plastic grid This is normal safety pop off function The opening conditions for the safety valve are e The ventilator is switched Off or Standby e The pressure inside the inspiratory pipe is 5 cm H O above the preset Upper Pressure Alarm limit This condition is controlled by the Monitor subsystem e The pressure inside the inspiratory pipe is 7 cm H O above the preset Upper Pressure Alarm limit This condition is controlled by the Breathing subsystem e The pressure inside the inspiratory pipe is above 117 cm H O This is an extra safety function and this situation will normally not occur e The safety valve will also be opened by some other alarms e g the Out of gas alarm During startup the pull magnet is electrically activated so that the pull magnet axis is pushed up with a clicking sound This is the normal operational position of the pull magnet the SAFETY VALVE is normally kept closed Inspiratory outlet 22 mm 15 mm tube connector for the inspiratory tube of the patient breathing system PC 1780 Pneumatic back plane Interconnecting board including connectors for cables to the Gas Mopures as well as to the SAFETY VALVE and to the O CELL and the TEMPERATURE SENSOR E382 E407E 061
33. cassette from contamination Heating foil An electrical HEATING Foil applied on the outside of the expiratory pipe where the ULTRASONIC FLOWMETER IS situated The purpose of the HEATING FoiL to reduce condensation and maintain a stable temperature in the expiratory gas SVX9143X Ultrasonic flowmeter The ULTRASONIC FLOWMETER iS a measuring device for the expiratory gas flow using ultrasound technique with two ultrasonic transducers recievers The measuring process is controlled from the main block PC 1784 ExPIRATORY CHANNEL The left hand side transducer is sending out ultrasonic sound that is reflected against the inner wall of the expiratory channel The ultrasonic sound is recieved by the right hand side transducer now acting as a reciever The time from sending to recieving ultrasonic sound in downstream expiratory gas flow is measured Then the right hand side transducer earlier recieving is sending out ultrasonic sound upstream the expiratory gas flow The ultrasonic sound is recieved by the left hand side transducer now acting as a reciever The time from sending to recieving ultrasonic sound in upstream expiratory gas flow is measured The time difference between the downstream and the upstream time measurements provides flow information A temperature sensor inside the cassette measures the expiratory gas temperature This temperature measurement is also used when calculating the e
34. cified range No voltage or frequence setting is required The mains inlet is equipped with two mains power fuses F11 and F12 rated 2 5 A AC DC Converter Converts the connected AC Power to the internal DC supply voltage 12 V_Unrec PC 1778 Standard connectors amp DC DC Converts the internal DC supply voltage 12 V_UNREG into the following internal DC supply voltages e 43 3 V e 45V e 12 V e 24 V All standard connectors are located on this board The connectors are the following e N26 External 12 V DC supply input The connectors is equipped with a fuse F1 rated 10 A N27 Optional equipment N28 Control cable e N29 RS232 Pin configuration and signal names can be found in chapter Diagrams Includes also an ID PROM The ID information can be read by the Servo System PC 1775 Plug and play back plane Connects the Optional Modules that are inserted in the Module Unit Controls charging of the Battery modules Includes also an ID PROM The ID information can be read by the Servo System Module unit Connection slots for 6 optional modules e g Battery modules Internal fan The InTERNAL Fan forces cooling air through the patient unit The air inlet is protected by a filter that must be cleaned or replaced during the Preventive maintenance The cooling air outlets are located in the expiratory section The INTERNAL Fan is controlled by the TEMPERATURE SENSOR in the I
35. ck plane e AC DC Converter e Internal fan e Mains supply inlet e PC 1778 Standard connectors amp DC DC e The PC boards as listed above are connected to the PC 1770 Main back plane The gas modules the O cell and the safety valve pull magnet are connected to the PC 1780 Pneu matic back plane E382 E407E 061 01 01 02 Siemens Elema AB 2 5 Introduction Servo Gas Connector Temperature Insp pressure transducer modules muff sensor tube incl bacteria filter O cell incl Safety valve Inspiratory bacteria filter pipe Expiratory cassette L x a O o X gt a The upper part of the Patient Unit contains the inspiratory section and the expiratory section The main parts of the inspiratory section are the e Two gas modules Air and O for regulation of the inspiratory gas e Connector muff e Inspiratory pipe with housings for the O cell and for the safety valve O cell incl bacteria filter e Temperature sensor e Inspiratory pressure transducer tube incl bacteria filter to connect the inspiratory pressure transducer The main parts of the expiratory section are the e Expiratory cassette e Expiratory valve coil The expiratory cassette is a complete unit and must not be disassebled It contains the following parts e Expiratory inlet with moisture trap e Ultrasonic flowmeter Heating foil to keep a stable temperature in the expiratory gas
36. d PC 1784 Monitor The Monitor S W controls all monitoring and alarm functions in the system including trends of measured values Events such as alarms and change of settings will also be logged The Monitor S W is stored on PC 1772 MONITORING New software can be installed via a System software update The system software must be re installed if PC 1772 is replaced The Monitor S W is executed by the microprocessor on PC 1772 Panel The Panel S W controls all user interaction as well as software updating to all subsystems via the PC Card interface The Panel S W is stored on PC 1777 PaneL New software can be installed via a System software update The system software must be re installed if PC 1777 is replaced The Panel S W is executed by the microprocessor on PC 1777 System ID A configuration file the System ID S W that is unique for each ventilator will enable the functions selected for this ventilator The System ID S W will be upgraded if the configuration of the ventilator is changed The System ID S W is stored on PC 1770 Main Back PLANE New System ID S W can be installed via an Option upgrade E382 E407E 061 01 01 02 Siemens Elema AB 2 7 Introduction Servo Notes 2 8 Siemens Elema AB E382 E407E 061 01 01 02 Servo Description of functions 3 Description of functions About this chapter pp 3 2
37. ding retaining ring using a suitable retaining ring pliers SVX9135X To mount the valve membrane into the cassette Place the retaining ring 1 correctly into the membrane It is very important that the valve membrane and the membrane seat in the cassette is clean Dirt particles can create leakage in the cassette SVX9134X 5 6 Siemens Elema AB E382 E407E 061 01 01 02 Servo Service procedures x G e o g a SVX9136X SVX9133X e Place the membrane onto the cassette as shown in the illustration e Squeeze the retaining ring pliers and carefully press the membrane in place into the cassette as shown in the illustration e Carefully release and remove the retaining ring pliers e Check that the membrane is not deformed by the retaining ring If necessary remove the membrane and redo the complete mounting procedure e Mount the expiratory cassette onto the Patient Unit After any maintenance or service of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s manual E382 E407E 061 01 01 02 Siemens Elema AB 5 7 Service procedures Servo Menu key The Menu function is a useful tool for the hospital F Biomeds as well as for the Siemens CSE Customer Pr Alarm ervice Engineer There are no locked functions Service E eer Th a o locked functio H Profile Alarm profile setup
38. e transducers 3 7 Pre use check 6 3 Preventive maintenance kit 7 3 RAM 3 2 Replacing PC boards 4 2 Safety inspection 7 9 Safety valve 2 6 3 5 Safety valve pull magnet 4 6 Serial number label 2 4 Serial port RS 232 2 4 Software information 5 2 Software installation 5 2 Software structure 2 7 Standard connectors 9 2 System ID 2 7 System software update 5 2 Technical error codes 6 7 Temperature sensor 2 6 3 4 Threadlocking adhesives 4 2 Tightening torque 4 2 User Interface 2 2 2 3 3 2 4 3 7 7 User Interface controls 3 2 8 2 Siemens Elema AB E382 E407E 061 01 01 02 Servo Diagrams 9 Diagrams Standard connectors nn 9 2 Functional Main Blocks diagram 9 3 E382 E407E 061 01 01 02 Siemens Elema AB 9 1 Diagrams Servo Standard connectors TR m or R WON Oo O O SVX9006X N26 External 12 V DC supply input 12V_UNREG_EXT_DC 12V_UNREG_EXT_DC GND GND 5 O O O Oo N27 Optional equipment GND DISABLE_VALVES_EXT L CAN_EXPANSION H CAN_EXPANSION L 12V_UNREG_EXPANSION ety o o Rom O W O M A N SVX9008X N28 N70 Gontrol cable 12V_UNREG_PANEL GND LED_CONTROL ON_OFF_CONTROL CAN_PANEL H CAN_PANEL L SVX9009X N29 RS232 CI_RDX_ISO CI TDX ISO CI DTR ISO GND ISO 2 Siemens Elema AB E382 E407E 061 01 01 02 Servo Diagrams EXPIRATORY SECTION Functional
39. ed cell life 500 000 hours The O cell is automatically calibrated each time a Pre use check is performed if O is connected to the ventilator An ID PROM is integrated into each O cell Its ID information and remaining lifetime can be read by the Servo System Temperature sensor A TEMPERATURE SENSOR is integrated into the connector on top of the O CeLL This sensor measures the temperature inside the INSPIRATORY SECTION The output signal corresponding to the temperature in the INsPIRATORY SECTION is used for regulation of the INTERNAL FAN Inspiratory pressure tube The INSPIRATORY PRESSURE TUBE connects the INsPIRATORY PiPE with the INsPIRATORY PRESSURE TRANSDUCER A bacteria filter protects the pressure transducer on PC 1781 Pressure TRANSDUCER from contamination Maintenance including exchange of bacteria filter according to User s manual The bacteria filter must also be replaced during the Preventive maintenance 3 4 Siemens Elema AB E382 E407E 061 01 01 02 Servo Description of functions Safety valve The movable axis of the SAFETY VALVE PULL MAGNET controls the opening and closing of the safety valve membrane in the INSPIRATORY PiPE The pull magnet is electrically activated closed from the main block EXPIRATORY CHANNEL When the SAFETY VALVE is not activated the weight of the pull magnet axis in combination with the design of the valve membrane pushes the pull magnet axis downw
40. embrane buttons and DIM sensor forms the Touch screen assembly and must be handled as one complete part The DIM sensor measures the ambient light and the screen brightness is automatically adjusted The TFT Display is a Thin Film Transistor Screen for color display of picture and alphanumeric data The Backlight consists of two fluorescent tubes lamps mounted behind the TFT Screen They are driven from the BACKLIGHT INVERTER Estimated lifetime with acceptable brightness level for the lamps is 30 000 hours 3 2 Siemens Elema AB E382 E407E 061 01 01 02 Servo Description of functions Patient unit Inspiratory section Functional Main Blocks diagram marking I The main block INSPIRATORY SECTION conveys the breathing gas from its gas inlets for Air and O supply to the patient breathing system It comprises the following main functions e GAS MODULES AIR AND O e CONNECTOR MUFF e NSPIRATORY PIPE e O CELL e TEMPERATURE SENSOR e INSPIRATORY PRESSURE TUBE e SAFETY VALVE e INSPIRATORY OUTLET e PC 1780 PNEUMATIC BACK PLANE Gas modules Air and O The Air and O Gas Moputes regulates the inspiratory gas flow and gas mixture SVX9003X 1 Filter 2 Inspiratory valve temperature sensor 3 Supply pressure transducer 4 Flow transducer Delta pressure transducer and net 5 Nozzle unit with valve diaphragm 6 Inspiratory solenoid The Gas MODULEs are factory calibrated
41. erface Check the status of all expiratory cassettes used on the Servoi System to be maintained Inform the customer if less than 1096 of the cassettes expected life length remains Barometric pressure e Select Status General on the User Interface Check that the Barometric pressure value shown on the User Interface corresponds to the actual Baro metric pressure value at the local site The value shown on the User Interface may not differ more than 5 from the actual barometric pressure If the value shown on the User Interface differs more than 5 from the actual barometric pressure the barometer in Servo must be calibrated FSSisrequired contact personnel authorized by Siemens that have access to the FSS Gassupply pressure transducers Connect the gas supplies Air and O e Select Status General on the User Interface Disconnect the gas supply one gas at the time Checkthatthe corresponding supply pressure value in the Status window drops Battery modules e Check the status of the Battery modules used Check the manufacturing date of the Battery module Manufacturing date is printed on the battery label The battery must be replaced after 3 years Check that the battery housing is not damaged Press the battery power symbol button and check that the green LEDs are lit All 4 LEDs must be lit if the battery is fully charged If required an extended check of the Battery modules can be
42. facturing date is printed on the battery label The batteries must be replaced after 3 years Allow the Battery module to charge until it is fully charged To display battery status Press the battery power symbol button on the battery to be checked All four LEDs must be lit SVX 545Xa and Select Status Modules on the User Interface Check that remaining time is more than 30 minutes on the battery to be checked With gas patient tubes and test lung connected let the Servo System run in a ventilation mode Disconnect mains power to the Servo System to allow battery operation HII Let the Servo System run in battery operation and check that the No battery capacity alarm is not activated within the specified time The Operating time is dependent on the number of Battery modules connected refer to the Servo Ventilator System User s manual SVX9010X Check that the time between the Limited battery capacity alarm and the No battery capacity alarm is more than 7 minutes Note All alarms are time stamped and stored in the Servo System This alarm information can be displayed in the Event log Allow the backup battery to recharge before clinical use of the Servo System The Charging time is dependent on the number of Battery modules connected refer to the Servo Ventilator System User s manual After any maintenance or service of t
43. g C The main block CoNTRoL comprises microprocessor control of Breathing pattern for all different ventilation modes Electronics including microprocessor uP control to achieve 1 Regulation of Inspiratory flow which is used during inspiration time in Volume Control VC mode 2 Regulation of Inspiratory pressure which can be used during inspiration time in any mode 3 Regulation of a constant Inspiratory flow which is used during expiration time in all modes 4 Respiratory timing pattern including frequency as well as distribution of the duration for Inspiration time Pause time and Expiration time according to front panel settings 5 Regulation of Inspiratory flow during inspiration time The desired total Inspiratory flow value according to front panel settings is used to gene rate the flow reference signals Insp FLow Rer 1 and Insp FLow Rer 2 The level relation between these two flow reference signals depends on the desired O concentration according to front panel setting InsP FLow REF 1 and Insp FLow Rer 2 are used for the control of its respective GAS MODULE Air and O Regulation of a constant Inspiratory flow during expiration time The desired constant Inspiratory flow value is the default or preset Bias flow value see User s manual This desired constant Inspiratory flow value is used to generate the flow reference signals Insp FLow Rer 1 and Insp FLow Rer 2 with the same relation and same handlin
44. g as described above under Regulation of Inspiratory flow except this occurs during expiration time Includes also an ID PROM The ID information can be read by the Servo System PC 1772 Monitoring Functional Main Blocks diagram marking M The main block Monitorinc comprises microprocessor calculation of parameters and monitoring of alarm limits with control of alarms as well as back up alarm The main block Monitorinc cooperates with the LOUDSPEAKER in the User Interface The PC 1772 MONITORING handles all supervision and alarms in the system It activates pressure reducing mechanisms including activation of the safety valve in case of excessive breathing system pressure All alarms are conveyed and displayed on the front panel and the alarm sound is also generated In case of malfunction in the loudspeaker located in the User Interface a back up sound generating device on PC 1772 will be activated automatically The following voltages are supervised e 24 V e 12 V e 12V e 5V e 3 3 V A buzzer on PC 1772 MoNITORiNG generates the alarm signal in case of 5 V or 3 3 V power failure The buzzer and 5 V 3 3 V failure logic is powered by back up capacitors in case of power failure PC 1772 also contains a barometric transducer and the measured barometric pressure is supplied to the other units in the system Trending of measured parameters are performed by MONITORING 3 8 Siemens Elema AB E3
45. he Servo System perform a Pre use check Refer to the Servoi Ventilator System User s manual 5 4 Siemens Elema AB E382 E407E 061 01 01 02 Servo 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 both batteries at the same time to keep the same replacement date for both batteries Preparations e Set the On Off switch on the control unit to Off Disconnect the mains power cable Disconnect the gas supplies wall and or cylinder Remove patient tubing Replacing the lithium battery e The lithium batteries are mounted ESD sensitive PC boards Refer to chapter Disassembling and assembling section Handling PC boards for further information regarding ESD sensitive components Remove the patient unit front cover Refer to chapter Disassembling and assembling section Patient unit Carefully pull out the PC board PC 1771 or PC 1772 containing the lithium battery to be replaced Note Do not remove the cable connector 1 Information stored in the PC board memory will be erased if the connector is removed If the battery on PC 1771 is disconnected user default configurations made via the Field Service System FSS and Pre use check results including transducer calibrations will be erased If the batte
46. igurations e Infant e Adult e 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 The Servo System can be divided into the following main units e User Interface e Patient Unit The Control cable connects the User Interface and the Patient Unit These main units are mounted onto the Servo Mobile cart which is the main body of the system A number of optional equipment can also be incorporated in the Servo System Examples on such optional equipments are e Servo Ultra Nebulizer Servo e Servo Holder for the Patient Unit e Gas trolley for backup gas cylinders e Gas cylinder restrainer for backup gas cylinders e IV Pole Servo User Interface panel cover e Battery module Servo e Support Arm 177 e Servo Humidifier e Humidifier Holder Servoz User Interface Patient Unit SVX 001Xa Servoi Mobile Cart Siemens Elema AB E382 E407E 061 01 01 02 Servo Introduction SVX 079Xa User Interface The User Interface can be mounted onto the Mobile cart but can also easily be removed from the cart and mounted on the bed post or table shelf The User Interface can be rotated and tilted into a suitable position Locking levers mounting devices and some other items are shown in the illustration above Loudspeaker C
47. ing the Pre use check MON If the internal leakage test see above has passed the leakage is to be located to the patient circuit Check for leakage or replace the patient circuit Refer to section regarding Technical error alarms for further information Siemens Elema AB E382 E407E 061 01 01 02 Servo Troubleshooting Technical error codes The table below shows recommended actions in case of Technical error alarms Some of the Error codes are intended only for R amp D not for field service If so the text N A is stated in the Recommended action column Error Error message Possible cause Recommended action code Monitoring 1 POWER FAILURE MINUS 12 VOLTS 1 Check status of external battery if TOO LOW connected 2 Replace PC1778 Standard connectors amp DC DC 2 POWER FAILURE MINUS 12 VOLTS 1 Replace PC1778 Standard connectors amp TOO HIGH DC DC 3 POWER FAILURE 12 VOLTS TOO LOW 1 Check status of external battery if connected 2 Replace PC1778 Standard connectors amp DC DC 4 POWER FAILURE 12 VOLTS TOO HIGH 1 Replace PC1778 Standard connectors amp DC DC 5 POWER FAILURE 24 VOLTS TOO LOW 1 Replace PC1778 Standard connectors amp DC DC 2 Replace gas modules 6 POWER FAILURE 24 VOLTS TOO HIGH 1 Replace PC1778 Standard connectors amp DC DC 7 INSP VALVE RANGE ERR 1 Replace PC1771 Control 2 Replace PC1772 M
48. ional 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 Siemens and when the equipment is used for other than its intended purpose Data on internal pressures in the Servo System are given in Pa bar Airway pressures are given in cm H O Pa 1 hPa 1 mbar 1 mbar 1 hPa 1 kPa 10 mbar 1 mbar 0 1 kPa 1 kPa 0 01 bar 1 bar 100 kPa 1 kPa 10 cm H O 1 cm H O 0 1 kPa 1 kPa 0 01 at 1 at 100 kPa 1 kPa 0 01 kgf cm 1 kgf cm 100 kPa 1 kPa 0 01 kp cm 1 kp cm 100 kPa 1 kPa 0 145 psi 1 psi 6 9 kPa Symbols used in this manual e ESD sensitive components Make sure to take precautions to avoid damaging ESD sensitive components Special waste Make sure to discard worn out batteries and other disposable parts according to local regulations and in an environmentally acceptable way Recycling Recycle if possible Recycling facilities may not be available in all areas Technical training Refers to the Servo Technical training supplied by Siemens Service contract Refers to the Servo Service contract supplied by Siemens wks Hazard notices e Before disassembling or assembling the Servo System make sure that the Gas supply is disconnected Mains power cable is disconnected
49. l be enclosed System software update A system software update will install a new system software version in the Servo Ventilator System It will not change the configuration of the ventilator System software updates are not dependent on the serial number of the ventilator System software update is distributed on an S W version update card Note As an option upgrade may require a new system software version the Option card will also contain this system software A system software update will then be performed during the option upgrade 5 2 Siemens Elema AB E382 E407E 061 01 01 02 Servo Service procedures Option upgrade Installation procedure e Set the On Off switch to Off e Insert the Option card e Set the On Off switch to On The installation window will now appear on the screen and the semi automatic installation procedure will start Follow instructions given on the screen e Press the Main Rotary Dial to start the upgrade or switch the system Off to cancel e The installation program will now check the versions of the system software and hardware installed in the Servo This check is done to detect If a new system software installation is required prior to the option upgrade and or If the upgrade must be terminated due to hardware incompatibility see Note 1 below e f detected that a system software update is required this installation will start The installati
50. n e Lowerthe locking catch 1 and disconnectthe connector 2 This is done to protect the O cell during the Internal fan test Carefully warm up the cable connector 2 and check that the Internal fan starts Use e g a light bulb or a heatfan to warmthe connector Thetemperature must not exceed 70 C The Internal fan will start with half effect at approx 33 C and with full effect at approx 43 C Re connect the connector 2 and mount the inspiratory section cover User Interface e Check the touch screen readability Brightness backlight Transparency Surface e Check if pixels on the touch screen are defective Open the Status window A few defective pixels can be accepted Check that defective pixels are not concentrated to a small area thus reducing the readability in this area FSS is recommended but not required e Perform the checks listed below and make sure that the software responds to these actions FSS is recommended but not required Check the touch screen functions Press buttons on different parts of the touch screen Check the Main Rotary Dial Turn and press the Main Rotary Dial Check the Direct Access Knobs Turn and press all Direct Access Knobs Check the membrane buttons Press all membrane buttons E382 E407E 061 01 01 02 Siemens Elema AB 7 7 Preventive maintenance Servo Expiratory cassette e Select Status Exp cassette on the User Int
51. nd the inspiratory pipe in order to remove possible dirt particles on the membrane If message Pressure Transducer difference gt 5 cm H O appears Check the test tube Check that the pressure transducer tubes filter are correctly mounted If the Pressure transducer test also fails see below check the pressure transducers Insp and Exp Siemens Elema AB E382 E407E 061 01 01 02 Servoz Troubleshooting Pressure transducer test Calibrates and checks the inspiratory and expiratory pressure transducers The new zero value for the pressure transducers may not differ more than 6 hPa from factory calibration With the inspiratory pressure transducers used as a reference a new gain factor is set for the expiratory pressure transducer The new gain factor may not differ more than 5 from factory calibration During this test the different subsystems concerned are compared The difference between the subsystems must not be more than 1 cm H O at 60 cm H O BRE MON If the Internal leakage test passed see above check replace Insp or Exp pressure transducer To locate the faulty pressure transducer replace one transducer at a time and re run Pre use check or pressure transducer test in FSS Safety valve test O cell test Checks and if necessary adjusts the opening pressure for the safety valve to 117 3 cm HO Checks the hardware signals related to the safety val
52. nel setting Expiratory outlet with expiratory one way valve The gas from the patient system leaves the ventilator via this ExPIRATORY OuTLET Backflow via the cassette is prevented by the ExPIRATORY One Way VALVE lts rubber membrane and valve seat are integrated parts of the EXPIRATORY OUTLET PC 1786 Expiratory channel cassette The PC 1786 ExPIRATORY CHANNEL CASSETTE is a connection board integrated into the ExPIRATORY CASSETTE for the ULTRASONIC FLOWMETER and for the HEATING Fol It connects to PC 1785 mounted in the expiratory cassette compartment Includes also an ID PROM The ID information can be read by the Servo System PC 1785 Expiratory channel connector The PC 1785 ExPIRATORY CHANNEL CONNECTOR is a connector board including signal filters that is mounted in the expiratory cassette compartment It connects to PC 1786 mounted in the ExPIRATORY Cassette when the cassette is docked to the expiratory cassette compartment PC 1770 Main back plane Interconnection board for the PC boards in the lower part of the patient unit The ventilators ID Serial No configuration time stamp for preventive maintenance etc is stored in an EEPROM on PC 1770 Thus PC 1770 can only be replaced by a factory preset PC board As the preventive maintenance time stamp will be reset when replacing PC 1770 a new time stamp must be set via the Biomed menu In order to make this new time stamp correct the preventive mainte n
53. nts Note in the Servo System software Biomed and also in a Servo System log book that a Preventive maintenance has been performed E382 E407E 061 01 01 02 Siemens Elema AB 7 9 Preventive maintenance Servo Notes 7 10 Siemens Elema AB E382 E407E 061 01 01 02 Servo Index 8 Index NA nn 8 2 E382 E407E 061 01 01 02 Siemens Elema AB 8 1 Index Servo AC DC Converter 2 5 3 9 Assembling guidelines 4 2 Backlight inverter 2 3 3 2 Bacteria filter for the inspiratory pressure transducer 7 3 Bacteria filter for the O cell 7 3 Barometric pressure 7 8 Battery modules 5 4 7 8 Biomed 5 9 Block diagram 9 3 Breathing 2 7 Cable reel 2 3 Configuration 5 10 Connector for external 12V DC 2 4 Connector for nebulizer 2 4 Connector for PC 2 3 Connector muff 2 6 3 4 Control cable 2 2 2 3 3 10 Control cable connector 2 4 Direct access controls 2 3 EEPROM 3 2 Equipotentiality terminal 2 4 Error code 6 7 Error message 6 7 Expiratory cassette 2 6 3 6 7 8 Expiratory cassette compartment 4 6 Expiratory cassette membrane 5 6 Expiratory inlet 2 4 Expiratory outlet 2 4 Expiratory section 3 6 Expiratory valve coil 2 5 2 6 Field Service System 7 2 Filters for the gas modules 7 3 Flash memory 3 2 Front panel screen 3 2 FSS 7 2 Functional main blocks diagram 9 3 Fuse F1 for external 12V D
54. on may take up to 15 minutes When the system software update is completed or found not required press the Main Rotary Dial to restart the Servo as instructed on the screen Do not remove the Option card e The option upgrade will now start This installation of the new configuration will take only a few seconds Information on the screen will state if the upgrade was successful see Note 2 below Remove the Option card and close the slot cover Restart the system with the On Off switch Perform a Pre use check according to instructions in the new Servo Ventilator System User s manual e Hand over the new User s manual to the customer Make sure that the old User s manual is deleted Note 1 If detected by the installation program that the update upgrade cannot be installed due to hardware incompatibility the installation will be terminated A message will occur on the screen Remove the PC card and restart the Servor System software update Installation procedure e Set the On Off switch to Off e Insert the S W version update card e Set the On Off switch to On The installation window will now appear on the screen and the semi automatic installation procedure will start Follow instructions given on the screen e Press the Main Rotary Dial to start the update or switch the system Off to cancel e The installation program will now check the versions of the system software and hardware inst
55. onitoring 3 Replace gas modules 8 TECH ERR INSP PAUSE HOLD TIME 1 Replace PC1771 Control EXCEEDED 9 TECH ERR EXP PAUSE HOLD TIME 1 Replace PC1771 Control EXCEEDED 10 VALVES_DISABLED 1 Replace PC1784 Expiratory channel 2 Replace PC1771 Control 3 Replace PC1778 Standard connectors amp DC DC 11 SAFETY VALVE OPEN 1 Check inspiratory channel 2 Replace safety valve pull magnet 3 Replace PC1784 Expiratory channel 12 BRE NODE DISCON 1 Replace PC1771 Control 13 BRE NODEID CONFLICT N A 14 PANEL NODE DISCON 1 Check control cable 2 Replace PC1777 Panel 15 PANEL NODEID CONFLICT N A E382 E407E 061 01 01 02 Siemens Elema AB 6 1 Troubleshooting Servo 16 EXP FLOW MTR NODE DISCON 17 EXP FLOW MTR NODEID CONFLICT 18 EXT COM DISCON 1 Replace PC1784 Expiratory channel N A 19 EXT COM NODEID CONFLICT N A 22 BUZZER SILENCER 24 BACKUP CAP ERR MON 25 TECH MON DEVICE COMM ERR 26 TECH ERR INCONSISTENT MAINS _ FAILURE 1 Replace PC1772 Monitoring 1 Replace PC1772 Monitoring Depending on If repeated replace parts as follows PC 1770 Main back plane PC 1772 Monitoring PC 1775 Plug and play back plane PC 1778 Standard connectors amp DC DC PC 1781 Inspiratory pressure transducer PC 1781 Expiratory pressure transducer O cell or O cell cable or PC 1772 Monitoring PC 1784 Expiratory channel or PC 1772 Monitoring Gas module Air or PC 1772
56. ording to instructions Make sure to follow the guidelines stated below Tightening torque e Thread size M3 0 95 0 05 Nm e Thread size M4 M6 3 1 0 1 Nm Threadlocking adhesives e Electrolube Bloc Lube BLV15ML on threads in contact with PC boards e Loctite 243 on all other threads Note Threadlocking adhesive is not required on Heli Coil screw thread inserts as these screw thread inserts have a self locking function Siemens Elema AB E382 E407E 061 01 01 02 Servo Disassembling and assembling SVX9123X User Interface To separate the front panel section from the rear cover e Disconnect the control cable 1 e Remove the screws 2 e Lift off the rear cover from the front panel section e All parts inside the front panel section are now accessible Note When replacing PC 1777 Panel it can be necessary to re install the system software For further information refer to section Replacing PC boards in this chapter With power supply connected to the Servo System there are energized electrical components inside the unit e g the backlight lamps that are supplied with 660 V by the Backlight Inverter All personnel must exercise extreme caution if fault tracing or adjustments are performed with power supply connected and with the user interface rear cover removed E382 E407E 061 01 01 02 Siemens Elema AB 4 3 Disassembling and assembling Servo Patient Unit
57. otes 5 10 Siemens Elema AB E382 E407E 061 01 01 02 Servoz Troubleshooting 6 Troubleshooting Generali a O ede 6 2 Preuisechec ir sa li a a a 6 3 Technical error codes siissiaassaasaassaaaaa 6 7 Only personnel trained and authorized by Siemens shall be permitted to perform installation service or maintenance of the Servo System i 4 Make sure that the Servo System is properly cleaned before performing any service or maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual Any service or maintenance must be noted in a log book All disposable parts must be discarded according to local regulations and in an environmentally acceptable way After any service or maintenance of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s Manual for details E382 E407E 061 01 01 02 Siemens Elema AB 6 1 Troubleshooting Servo Possible causes to malfunction not mentioned in the following troubleshooting guides are e The system has not been correctly assembled after cleaning maintenance or service e Disconnection or bad connection in cable connectors PC board connectors and inter connection boards e Disconnected or defective gas tubes These possible causes to malfunction
58. performed This extended check is described in chapter Service procedures 7 8 Siemens Elema AB E382 E407E 061 01 01 02 Servo Preventive maintenance Lithium batteries e Check manufacturing date for the lithium batteries mounted onto PC 1771 and PC 1772 The batteries must be replaced after 5 years Replacementis described in chapter Service procedures Safety inspection Make a visual inspection of the Servo System for external defects or damages Replace defective or damaged parts Checkthe mains power cable and control cable and their connections for damage e Perform aleakage current test The leakage current test is a standard procedure regulated by IEC 60 601 1 orcorresponding national standards Allowable values and test methods are defined in the standard The use of a leakage tester e g Bender Safety Tester 601 751 orequivalentis recommended e Check that a Servo Ventilator System User s manual and a Servo Ventilator System Brief instructions corresponding to the installed software version is present Also check that operating manuals for all optional equipment connected to the Servo System are present Completing the Preventive maintenance e Performa Pre use check Refer to the Servo Ventilator System User s manual Perform Function checks on the optional equipments connected to the Servo System Referto the operating manuals for these optional equipme
59. r maintenance of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s Manual for details E382 E407E 061 01 01 02 Siemens Elema AB 4 1 Disassembling and assembling Servo General Disassembling of the main units in the Servo System is described in this chapter If not stated otherwise the assembling procedure is the reverse of the described disassembling procedure The illustrations in the Servo Spare Parts List are very useful as a guide when disassembling and assembling the Servoi System Preparations Before disassembling or assembling the Servo System e Set the On Off switch on the control unit to Off e Disconnect the mains power cable Disconnect the gas supplies wall and or tank e Disconnect Battery modules e Make sure that all gas conveying parts are cleaned according to instructions in the Servo User s manual After any service intervention in the Servo System perform a Pre use check according to instructions in the Servo Ventilator System User s manual Handling PC boards The PC boards contain components that are highly sensitive to static electricity Those who come into contact with circuit boards containing sensitive components must take certain precautions to avoid damaging the components ESD protection When working with ESD sensitive components always use a grounded wrist band and grounded
60. re compared The difference between the subsystems must not be more than x 0 3 l min BRE MON 1 Check that the connected gas supply pressure Air and O is within the specified range 2 Check that the cassette is correctly seated in the cassette compartment If possible replace the expiratory cassette and check if the new cassette is accepted by the Pre use check Replace gas modules Air and O Replace PC 1771 Control Replace PC 1772 Monitoring Battery switch test If Battery modules are connected e Checks that the power supply switches to battery when mains power is disconnected e Checks that the power supply switches back to mains power when main is re connected MON 1 Check that the total remaining time for the connected battery modules are gt 10 min If not replace the empty battery with a charged battery and repeat the test 2 Replace PC1775 Plug and play back plane Patient circuit leakage test Alarm state test Checks the patient circuit leakage with patient tubing connected using the inspiratory and expiratory pressure transducers Checks that the leakage is less than 81 ml min at 50 cm H O Checks that the measured pressure values differs less than 7 cm H O between insp and exp Will allow the system to calculate a compensation for circuit compliance if the leakage requirements are met BRE Checks that no Technical error alarms are active dur
61. ry on PC 1772 is disconnected all trends all logs and Pre use check results including transducer calibrations will be erased There are two equal battery connectors 2 and 3 on the PC boards Connect the new battery to the un used connector The memory functions are now Secured by the new battery Cut the cable ties holding the old battery 4 to the PC board Disconnect and remove the old battery x R e o X o Mount the new battery onto the PC board using new cable ties as shown in the illustration Insert the PC board into the correct PC board slot and reassemble the patient unit After any maintenance or service of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s manual E382 E407E 061 01 01 02 Siemens Elema AB 5 5 Service procedures Servo Replacing the membrane in the expiratory cassette The expiratory cassette is a complete unit and must not be disassebled The only part that can be replaced is the valve membrane Before replacing the membrane check the remaining operating time for the expiratory cassette If less than 10 15 operating time remains it is recommended to replace the complete expiratory cassette It is very important for the function of the expiratory valve that the valve membrane is removed and mounted correctly as described below To remove the valve membrane from the cassette Carefully remove the membrane inclu
62. s to the INsPiRATORY Pipe inlet Inspiratory pipe The INSPIRATORY Pipe leads the gas from the CONNECTOR MurF to the INsPIRATORY OUTLET The INSPIRATORY Pipe comprises e Housing and locking lever for the O CeLL with its bacteria filter e Housing for the SAFETY VALVE Connection for measurement of inspiratory pressure The pipe is provided with internal flanges with the purpose to improve mixing of O and Air O cell The O CELL is mounted in a housing on the INSPIRATORY Pipe and is protected by a bacteria filter Maintenance including exchange of bacteria filter according to the User s manual The bacteria filter must also be replaced during the Preventive maintenance The O cell gives an output voltage proportional to the partial pressure of oxygen inside the Inspiratory pipe At constant ambient pressure this output is proportional to the O concentration in percent In each O cell the output signal will stay at a fairly constant level usually within 10 17 mV in normal air and at standard barometric pressure during the life time of the cell The cell should be replaced when the output level has started to decrease In this situation repeated calibration i e Pre use check of the O concentration is required The life time of the cell is affected by the O concentration With a concentration at the cell in 9o and expected cell life time in hours the following applies at 25 C 77 F 0 Conc x Expect
63. s Elema AB 3 1 Description of functions Servo About this chapter This text refers to the Functional Main Blocks diagram in chapter Diagrams Text written in SMALL CAPS refers to block names in the Main Blocks diagram Memory types used in the Servo There are four different types of memories used in the Servo e Flash memory For software storage Can be upgraded updated via Option card or S W version update card Present on PC 1771 PC 1772 PC 1777 and PC 1784 e RAM For temporary storage of software and data Present on PC 1772 and PC 1777 e Non volatile memory RAM with battery back up For settings trends and logs Present on PC 1771 and PC 1772 EEPROM For PC board information configuration calibration data etc Present on almost all PC boards and in the O cell User Interface Functional Main Blocks diagram marking U User Interface controls 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 Control 4 each rotary encoders Membrane buttons Integrated parts of the Touch Screen assembly e Touch screen PC 1777 Panel Some features included on PC 1777 PANEL are e SIMM Single In line Memory Module mounted on its connector P77 Memory type SDRAM e PC CARD SLOT intended for connection insert of a PC Card PC Cards are used to Downlo
64. sorbing material of expanded poly ethylene EPE or expanded polypropylene EPP e Clamps of Polyethylene PE E382 E407E 061 01 01 02 Siemens Elema AB 1 7 Important Servo Notes 1 8 Siemens Elema AB E382 E407E 061 01 01 02 Servo Introduction 2 Introduction VIG UTES a r A 2 2 USEF MI tura 23 Patent Unit s ade dert nee 2 4 Servoi software structure nnee 2 7 General se menten este eerie 2 7 Breathing Taza i zy AAA RA ia 2 7 MONO a RE 2 7 Panel Peter OE PRA 2 7 c 2 7 Only personnel trained and authorized by Siemens shall be permitted to perform B 4 installation service or maintenance of the 7 Servo System 14 Make sure that the Servo System is properly cleaned before performing any service or maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual Any service or maintenance must be noted in a log book All disposable parts must be discarded according to local regulations and in an environmentally acceptable way After any service or maintenance of the Servo System perform a Pre use check Refer to the Servo Ventilator System User s Manual for details E382 E407E 061 01 01 02 Siemens Elema AB 2 1 Introduction Servo Main units The Servo System is available in different main conf
65. tandards and require ments as stated in the Servo Ventilator System User s manual E382 E407E 061 01 01 02 Siemens Elema AB 1 5 Important Servo Important Environmental declaration Construction materials Purpose The construction materials used in Servo in of This environmental declaration is for a Servo basic unit including the carrier and one battery Letters codes within brackets refers to the Functional Block Diagram in chapter Diagrams Components with special environmental concern Components listed below shall be disposed of in an environmentally safe way Printed circuit boards e PC 1770 Main back plane e PC 1771 Control including a Lithium battery C e PC 1772 Monitoring including Lithium battery M e PC 1775 Plug and Play back plane P e PC 1777 Panel U e PC 1778 Standard connectors amp DC DC P e PC 1780 Pneumatic back plane I e PC 1781 Pressure transducer 2 pcs T e PC 1784 Expiratory channel F e PC 1785 Exp channel connector E e PC 1786 Exp channel cassette E Other electronics e TFT assembly including backlight U e Touch screen U e O cell containing Pb l e Air module containing multiple PC boards l O module containing multiple PC boards l e AC DC Converter containing PC boards P e Exp valve coil E e Safety valve pull magnet l the total weight Metal total 77 e Aluminium 70 e Steel zink brass 8 Polymeric material
66. 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 e Worn out batteries must be recycled or disposed of properly according to local Za regulations Recycle facilities may not be available in all areas e Batteries must not be disposed of with ordinary waste All other disposable parts shall be discarded according to local regulations and in an environmen tally acceptable way e When working with ESD sensitive A bid components always use a grounded wrist band and a grounded work surface Adequate service tools must always be used To the responsible service personnel e The contents of this document are not binding If any significant difference is found between the product and this document please contact Siemens for further information e We reserve the right to modify products without amending this document or advising the user e Only personnel trained and authorized by Siemens shall be permitted to perform installation service or maintenance of the Servo System Only Siemens genuine spare parts must be used PC boards spare parts must always be kept in a package for sensitive electronic devices Siemens will not otherwise assume responsibility for the materials used the work performed or any possible consequences of same The device complies to s
67. tivated replace the Gas module Air f an O supply pressure alarm is activated replace the Gas module O Text within brackets refers to the tested subsystem BRE Breathing MON Monitor PAN Panel E382 E407E 061 01 01 02 Siemens Elema AB 6 3 Troubleshooting Servo Internal leakage test Checks the internal leakage with test tube connected using the inspiratory and expiratory pressure transducers Checks that the leakage is less than 11 ml min at 80 cm H O Checks that the measured pressure values differs less than 5 cm H O between insp and exp BRE If message Leakage or Excessive leakage appears 1 Check that the test tube is correctly connected Check the expiratory cassette Check that the expiratory valve membrane is correctly seated in the cassette Check that the cassette is correctly seated in the cassette compart ment If possible replace the expiratory cassette and check if the new cassette is accepted by the Pre use check Check the inspiratory section Check that the safety valve membrane is correctly seated in the inspiratory pipe Check that the inspiratory pipe is correctly mounted in inspiratory section Check that the safety valve closes properly when the Pre use check is started distinct clicking sound from the valve Check that the pressure transducer tubes filter are correctly mounted Clean the expiratory cassette a
68. ts can e g be Humidifier equipment Otheroptional equipment Preparations Make sure that the Servo System is properly cleaned before performing any maintenance routine cleaning as well as extended cleaning For cleaning procedures refer to the Servo Ventilator System User s manual e Make sure that the Servo System works properly before performing any maintenance e Set the On Off switch on the User Interface to Off e Disconnectthe mains power cable e Disconnect the gas supplies wall and or cylinder e Remove patient tubing e Remove Servo Guard bacteria filter from the expiratory inlet Equipment e Standard service tools e Barometer or information about the actual barometric pressure e Field Service System FSS Recommended but not required e Preventive maintenance kit containing all parts needed during the maintenance 7 2 Siemens ElemaAB E382 E407E 061 01 01 02 Servoz Preventive maintenance Preventive maintenance Preventive maintenance kit Only original parts from Siemens must be used in the Servo System Spare parts and maintenance kits can be ordered from your local Siemens representative When performing this maintenance a Preventive maintenance kit for Servo should be used The following parts shall be replaced and they are in cluded in the Preventive maintenance kit for Servo A Filters for the gas modules B Bacteriafilter forthe inspiratory
69. ve functions BRE MON Calibrates and checks the O cell at 21 O and 100 O Checks if the O cell is worn out As different gas mixtures are used during this test calibration and check of O cell will not be performed if one gas is missing BRE MON gt Check the inspiratory section Check that the safety valve membrane is correctly seated in the inspiratory pipe Check that the inspiratory pipe is correctly mounted in inspiratory section 2 Check that the safety valve closes properly when the Pre use check is started distinct clicking sound from the valve 3 Replace PC 1784 Expiratory channel 1 Check that the connected gas supply pressure Air and O is within the specified range Replace the O cell Replace gas modules Air and O Replace PC 1771 Control Replace PC 1772 Monitoring OM OS E382 E407E 061 01 01 02 Siemens Elema AB 6 5 Troubleshooting Servo Flow transducer test Checks the inspiratory flow transducer Calibrates and checks the expiratory flow transducer Calibrates at 60 O and checks at 100 and 21 O As different gas mixtures are used during this test calibration of the expiratory flow transducer will not be performed if one gas is missing The new calibration factor for the expiratory flow transducer may not differ more than 10 to 15 from factory calibration During this test the different subsystems concerned a
70. work surface Adequate service tools must also be used PC boards spare parts must always be kept in protective packaging for sensitive electronic device A A PC boards must not be inserted or removed while the mains power or battery power is applied to the PC boards Remove and insert the PC boards very carefully to avoid damage to the connectors Replacing PC boards The Servof system software is distributed on different subsystems located on the following PC boards e PC 1771 Control e PC 1772 Monitoring e PC 1771 Expiratory Channel e PC 1777 Panel When delivered as spare parts these PC boards are equipped with the latest version of the system software However if during a service intervention any of the above PC boards need to be replaced it is recom mended that the system software version used prior to the PC board replacement is kept Thus a S W version update card with the applicable system software version must be available for re installation purposes Assembling guidelines The Servo System specifications allow unit operation also during patient transportation All parts of the User Interface and the Patient Unit assembled with screws and nuts are therefore tightened with a specified torque and secured with threadlocking adhesives In order to maintain these specifications over time it must be ensured that after any service intervention removed parts are re assembled and secured acc
71. xpiratory flow 3 6 Siemens Elema AB E382 E407E 061 01 01 02 Servo Description of functions Bacteria filter and expiratory pressure tube Via a BACTERIA FILTER inside the cassette the ExPIRATORY PRESSURE TUBE Connects the cassette to the ExPIRATORY PRESSURE TRANSDUCER The filter and the connector are integrated parts of the cassette The filter protects the transducer on PC 1781 PressuRE TRANSDUCER from contamination Expiratory valve The Expiratory VALVE consists of a membrane in the cassette that is operated by the axis of the ExPIRATORY VALVE Colt The valve is fully open as long as no power is supplied to the coil During normal conditions the membrane will not need replacement during the lifetime of the expira tory cassette However if the membrane for some reason has become defective it can be replaced Refer to instructions in chapter Service procedures Before replacing the membrane check the remaining operating time for the expiratory cassette If less than 10 15 operating time remains It is recommended to replace the complete expiratory cassette Expiratory valve coil The movable axis of the ExPIRATORY VALVE Coi controls the opening of the ExPIRATORY VALVE by pushing the valve membrane into desired position The power supply to the coil is regulated so that the remaining pressure in the patient system towards the end of the expiration time is kept on the PEEP level according to front pa
72. ys the user default configuration There are three different configuration levels Options This level controls if the ventilator is configured as for Adult Infant or Universal It also controls options such as Ventilation modes Automode and Nebulizer Options can only be installed changed with an Option card a PC Card that is individually created for each ventilator Locked user default configurations This level controls user default configurations such as default Patient range Language and Units The Field Service System FSS is required to change the locked user default configurations With the FSS it is also possible to import user default configurations e g configurations specified for all Servo in one department or hospital Open user default configurations This level controls user default configurations such as Alarm Limits and Displayed Values The open user default configurations can be changed via the Menu key see Edit configurations below Edit configuration Open user default configurations such as Alarm Limits and Displayed Values can be changed in this window Locked user default configurations such as General parameters Patient range Language etc and Units can only be changed via the Field Service System see View configuration above Set date and clock Date and time setting can be changed in this window E382 E407E 061 01 01 02 Siemens Elema AB 5 9 Service procedures Servo N

SIEMENS Servo I Ventilator Service Manual

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