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S/5 Airway modules

Document No. 800 1005-1

47

4

TROUBLESHOOTING

4.1

Troubleshooting chart

Trouble

Possible Cause/Treatment

No response to breathing

Sampling line or water trap blocked or loose, or improperly attached.
Water trap container full.
Interface cable to monitor disconnected.
See chapter “

Gas sampling system troubleshooting

.”

SENSOR INOP. message

The temperature is too high, check fan and filter at the rear panel.
Communication error, check timeout and bad checksum values at the service menu.
Check Airway Module connection cable and supply voltages.
Check ACX measuring board.

xx ZEROING ERROR-message

Gas zeroing failed. Condensation or residual gases are affecting zero measurement. Allow module to run
drawing room air for half an hour and calibrate again.

AIR LEAK-message

Air leak in sampling system. Probably water trap or the sampling line is not attached properly. Gas zero
valve failure. Pump failure or gas outlet blockage. Supply voltage missing

REPLACE TRAP-message

Flow resistance increased due to residue built-up on water trap membrane. Replace the water trap.

REBREATHING-message

CO

2

concentration in inspiratory air is too high. Possibly CO

2

absorber in ventilator is saturated. Change

the absorber.

OCCLUSION-message

Sampling line or water trap is occluded. Water trap container is full. If occlusion persists check internal
tubing for blockages. Check the power supply voltages.

SELECT AGENT-message

No anesthetic agent is selected though delivery is started. Vaporizer valve is broken. Traces of cleaning or
disinfecting agent in the water trap container affecting the readouts. Replace the water trap.

No response to any gas

Sampling line, water trap, or internal tubing blocked or loose, or improperly attached.
Pressure valve malfunction. Pump failure. Supply voltage missing. Serial communication error. Check
those items.

Sudden increase in gas display

Measuring chamber contamination.

±

15 V supply voltages missing.

Water trap malfunction. Check all internal tubing and the interior of the water trap for occlusions or leaks.
Replace water trap.
Check flow rates.

Abnormally high response to all
gases (or abnormally low) or
sudden occlusion warning

Pressure transducer failure. Exchange the ACX Measuring board.

Random output (resembling
noise)

Chopper motor timing pulses out of sync.
Chopper motor not running, motor faulty or connection loose.
Chopper motor driver transistor C-E open circuit or current limiter short circuit.
Exchange the ACX measuring board.

Strong drift in all gases

Leakage in the sampling line or internal tubing (especially in conjunction with too low readings).
Exchange the ACX measuring board.

No gas waveforms
intermittently.

Gas waveforms are not shown during automatic zeroing, occlusion, or air leak. Check the monitor screen
for possible messages and proceed accordingly.

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Содержание S/5 B-GAS

Страница 1: ...nual Slot All specifications are subject to change without notice Document No 800 1005 1 June 2001 Datex Ohmeda Inc 3030 Ohmeda Drive 53707 7550 MADISON WIS USA Tel 1 608 221 1551 Fax 1 608 222 9147 www us datex ohmeda com Datex Ohmeda Division Instrumentarium Corp P O Box 900 FIN 00031 DATEX OHMEDA FINLAND Tel 358 10 394 11 Fax 358 9 146 3310 www datex ohmeda com Instrumentarium Corp All rights r...

Страница 2: ......

Страница 3: ...Volume TV 3 1 2 12 Minute Volume MV 3 1 2 13 Airway flow 3 1 3 Technical specification 4 1 3 1 CO2 4 1 3 2 O2 4 1 3 3 N2O 4 1 3 4 AA 4 2 Functional Description 5 2 1 Measurement principle 5 2 1 1 CO2 N2O and Agent measurement 5 2 1 2 O2 measurement 6 2 1 3 Agent identification 7 2 1 4 Patient Spirometry 8 2 2 Main components 9 2 2 1 Gas sampling system 10 2 2 2 ACX 200 measuring unit 16 2 2 3 OM m...

Страница 4: ... ACX measuring unit 50 4 5 ASX agent identification unit troubleshooting 52 4 6 PVX board troubleshooting 53 4 7 Gas mother board troubleshooting 53 4 7 1 Instructions after replacing the software or Gas mother board 53 4 8 Error messages 54 5 Service menu 55 5 1 Gas mother board 56 5 2 ACX service menu 59 5 3 PVX service menu 61 5 3 1 Flow calibration 62 5 3 2 Temp Hum service menu 63 5 4 ASX ser...

Страница 5: ...Gas sampling system block diagram 13 Figure 8 Gas sampling system layout 14 Figure 9 ACX photometer ACX 200 measuring unit 16 Figure 10 CO2 N2O AA measurement block diagram 17 Figure 11 ACX measuring board block diagram 19 Figure 12 ASX measuring unit 20 Figure 13 ASX measuring board block diagram 21 Figure 14 PVX board block diagram 23 Figure 15 Gas mother board block diagram 25 Figure 16 Gas sam...

Страница 6: ...Datex Ohmeda S 5 Anesthesia Monitor Document No 800 1005 1 iv ...

Страница 7: ...entation conventions used symbols on equipment safety precautions system description system installation interfacing functional check and planned maintenance Letters in the name stand for G Side mountable gas module O CO2 Patient O2 and N2O V Patient Spirometry A Anesthetic agents i Agent identification Table 1 Options of Parameter Modules CO2 N2O Patient O2 Agents Agent id Spirometry G AO G AiO G...

Страница 8: ... Auto zeroing is performed at start up after 5 min 5 min 5 min 15 min 15 min 15 min and after that every 60 min at regular intervals 1 2 1 CO2 Measurement range 0 to 10 0 to 10 kPa 0 to 76 mmHg Extended range 10 to 15 10 to 15 kPa 76 to 114 mmHg unspecified If CO2 concentration is below 0 1 0 0 is displayed 1 2 2 Respiration rate Breath detection 1 change in CO2 level Measurement range 4 to 60 bre...

Страница 9: ...of total agent concentration 1 2 9 Patient Spirometry Values are valid when Respiratory rate adult 4 30 pedi 4 50 breaths min I E ratio 1 3 1 0 5 Inner diameter of ET tube is 5 5 mm adult or 3 to 6 mm pediatric 1 2 10 Airway Pressure Paw Accuracy 1 5 cmH2O Resolution 1 cmH2O Measuring range 20 to 80 cmH2O 1 2 11 Tidal Volume TV Accuracy 6 or 30 ml adult 6 or 4 ml ped Resolution 1 ml Measurement ra...

Страница 10: ...ror 0 2 CO2 0 to 8 0 4 CO2 8 to 10 1 3 2 O2 Measurement rise time 480 ms from 10 to 90 Gain drift 2 O2 24 h Gain temperature drift 3 O2 10 C Nonlinearity error 2 O2 1 3 3 N2O Measurement rise time 360 ms from 10 to 90 Gain drift 2 N2O 24 h Gain temperature drift 3 N2O 10 C Nonlinearity error 2 N2O 1 3 4 AA Measurement rise time 520 ms from 10 to 90 Gain drift 0 4 AA 24 h Gain temperature drift 0 4...

Страница 11: ... is measured at three wavelengths using an infrared detector One of the wavelengths is that of the CO2 absorption peak at 4 3 micrometers the second is that of the N2O absorption peak at 3 9 micrometers and the third is that of the anesthetic agent absorption peak at 3 3 micrometers The signal processing electronics receive the signals from the IR detector and demodulate it to get DC components ou...

Страница 12: ...picked up with a differential pressure transducer is generated in a measuring cell with a strong magnetic field that is switched on and off at a frequency of 110 Hz The output signal is a DC voltage proportional to the O2 concentration difference between the two gases to be measured Switched magnetic field Mixture out Electromagnet Microphone Sample in Reference in Figure 2 O2 measurement principl...

Страница 13: ...ource a measuring chamber a rotating filter and a detector The peak wavelength of the narrow bandpass filter changes when the angle between the light path and the filter is changed When the filter rotates the required spectrum is scanned through The agent or a mixture of agents is identified by comparing the measured spectrum with stored reference spectra Anesthetic Agent Gas Absorption Spectra 0 ...

Страница 14: ...spiratory minute volume MV in l min Expiratory volume in first second V1 0 in per cent for adults and in 0 5 seconds for children Inspiration expiration ratio in time I E Airway pressures Peak pressure Ppeak End inspiratory pressure Pplat Positive end expiratory pressure PEEP Real time airway pressure waveform Paw Flow Real time flow waveform V Compliance C Pressure volume loop Flow volume loop Ai...

Страница 15: ...s The airway modules consist of ACX 200 and OM 101 gas measuring units ASX 200 agent identification unit G AiO AiOV PVX board G OV AiOV AOV gas sampling system ACX measuring board and gas mother board Oxygen Measuing Unit X2 X4 X8 X9 X1 X5 X10 X12 X7 X11 Module Key Pump Valves Fan Regulator Gas Module CPU Lamp Driver Valve Driver Pump Driver ACX Board ACX Bench ASX Unit O2 signal Lamp Supply Volta...

Страница 16: ...tware determines the occlusion and air leak alarm limits during the turn on sequence The small inner diameter causes fluids such as blood or mucus not to propagate within the tube so that when the line is clogged it is replaced The NafionTM tube 1 A nafion tube tubes A or B and C see figure 5 is used to balance the sample gas humidity with that of ambient air The tube will prevent errors caused by...

Страница 17: ... infrared light method used also in the ACX 200 unit Pressure valve The pressure valve is used to measure the pressure gradient between the O2 measurement flow and the O2 reference flow This pressure gradient reflects the condition of the D fend water trap filter Normally the pressure gradient between the O2 measurement flow and the reference flow is approximately 8 mmHg If the software detects th...

Страница 18: ...Monitor Document No 800 1005 1 12 Figure 5 Gas sampling system block diagram In G AO AOV models tube A is Teflon B and C Nafion In G AiO AiOV models tubes A and C are Nafion B is Teflon See new tubing since autumn 1998 in figure 7 ...

Страница 19: ...ure valve O2 sensor ASX 200 Damping chamber Sample pump Ref IN Room AIR Sample Gas IN Pressure transducer Sample Gas OUT A B C side flow main flow Constriction cassette in G AiO AiOV Figure 7 Gas sampling system block diagram In G AO AOV models tube A is Teflon B and C Nafion In G AiO AiOV models tubes A and C are Nafion B is Teflon Figure 7 is valid for modules manufactured since autumn 1998 ...

Страница 20: ...Datex Ohmeda S 5 Anesthesia Monitor Document No 800 1005 1 14 Figure 8 Gas sampling system layout Figure 8 is valid for modules manufactured since autumn 1998 ...

Страница 21: ...73803 50 9 2 874509 50 8 7 873804 50 7 4 873805 50 6 5 878044 50 5 8 873806 50 5 1 878043 50 4 4 873807 50 3 8 878042 50 3 2 873808 50 3 0 878040 50 2 8 878039 50 2 5 878038 50 2 3 873809 50 2 0 878037 50 1 8 873810 50 1 6 878036 50 1 4 873811 50 1 1 873812 NOTE The number on the cassette represents relative flow when a specific pressure is applied Therefore 50 26 0 presents the least resistance a...

Страница 22: ...hrough the reference chamber then through the measuring chamber finally it is blocked completely The same sequence is repeated at the N2O and anaesthetic agent gas absorption wavelengths After passing through the filters the light is reflected and focused by a mirror onto the infrared detector This detector measures the three light levels for each gas described above There is an optical sensor inc...

Страница 23: ...h usually is room air are conducted into a gap in an electromagnet with a strong magnetic field switched on and off at a frequency of approximately 110 Hz An alternating differential pressure is generated between the sample and reference inputs due to forces acting to the oxygen molecules in a magnetic field gradient The pressure is measured with a sensitive differential transducer rectified with ...

Страница 24: ... it to Gas mother board The board contains in addition to the 80C51FA processor EPROM RAM and EEPROM several analog and digital I O functions Internal and external bus The processor has access to the Measuring board peripherals memory A D converter D A converters etc via an internal bus For communication between the Gas mother board and the Measuring board there is an external bus in connector X1 ...

Страница 25: ...S 5 Airway modules Document No 800 1005 1 19 Figure 11 ACX measuring board block diagram ...

Страница 26: ... board The absorption of infrared light is measured with a lead selenide detector The signal is amplified and then led to the measuring board 2 2 6 ASX measuring board The measuring electronics can be divided into a few functional blocks which are described below See the block diagram in figure 13 The ASX measuring board controls the measurement It converts the ASX photometer signal to digital dat...

Страница 27: ...it serial chip It is partly protected so that if jumper X1 is installed the processor can erase or write the protected registers by serial communication commands The protected section contains permanent factory calibrations Figure 13 ASX measuring board block diagram ...

Страница 28: ... the PVX board for airway pressure measuring purposes The breathing flow of a patient passing through D lite adapter creates pressure difference This pressure difference is measured by pressure transducer B1 Overpressure and negative pressure in airways are measured by another pressure transducer B2 NOTE Never apply DIFFERENTIAL pressure higher than 25 cmH2O to the spirometry tubing Make sure that...

Страница 29: ...se Vol Flow Pressure to Gas mother board Zero Valve OUT OUT Gas Pressure and Flow IN from Front Panel Gas Pressure and Flow IN from Front Panel Room Pressure IN IN Room Pressure Reset from to Gas mother board Serial In Serial Out D12 D12 D4 D6 D12 TEMP PRESS FLOW1 FLOW0 OFFSET Zero Valve A8 MUX Temp sense Figure 14 PVX board block diagram ...

Страница 30: ...pump based on the data which ACX Measuring board transmits Main parts Module processor 80C196KC 16 MHz 16 MHz oscillator EPROM program memory External RAM memory EEPROM Address and data bus latch Address decoding GAL circuit 4 channel serial communication IC QUART D4 External communication Serial communication bus inside the module processor is used The bus is connected to module bus via RS 485 bu...

Страница 31: ...cation Control command LAMP of the infrared lamps of the chambers comes from the module processor Key push reading CPU reads the front panel key pushes Reset Voltage supervising circuit performs power on reset Reset from the module bus is connected via RS 485 buffer NRESET X4 OM SENSOR X2 ACX UNIT X5 ASX SENSOR X1 AUX I O X3 PVX SENSOR ANALOG VOL AWFLOW AWPRE SERIAL COMM CHIP EPROM RAM CPU PUMPDRV...

Страница 32: ...the power supply 2 3 Connectors and signals 2 3 1 Module bus connector 13 1 14 25 Pin No I O Signal 1 I RESET RS485 2 I 15 VDC 3 I 15 VDIRTY 4 I 15VDC 5 I O DATA RS485 6 I O DATA RS485 7 Ground and Shield 8 I RESET RS485 9 n c 10 n c 11 n c 12 n c 13 Ground and Shield 14 I 24 32 VDIRTY Depends on power supply 15 I Ground DIRTY 16 n c 17 n c 18 n c 19 n c 20 I GASFR not used 21 I CTSD not used 22 I...

Страница 33: ...s X1 Module connector Serial communication bus to the main CPU board Supply voltages X2 ACX Measuring board X3 PVX board X4 Oxygen measuring unit X5 ASX Measuring board X7 Sampling pump X8 X9 Power supply for infrared lamps ACX ASX X10 Fan X11 Module front panel keys X12 Valves ...

Страница 34: ...13 NC LAMP NC 14 NC PB5 NC 15 NC SSYNC NC 16 RBD2 SMOTOR NC 17 RESET PC0 TO RTSO 18 SEROUT 0 NC SERIN 0 19 P1 1 PC2 FGAIN 1 P1 0 20 OP0 RTSA PC3 FGAIN 2 INT0 21 SEROUT 1 PC4 OCCLUS SERIN 1 22 OP1 RTSB PC5 PUMPON IP2 TIMERIN 0 23 SEROUT 2 PC6 ZERO SERIN 2 24 NC PC7 RTS0 NC 25 NC PA0 NC 26 NC PA1 NC 27 NC PA2 NC 28 INT1 PA3 INT3 29 5 V DRV PA4 5 V 30 15 VDIRTY PA5 5 V 31 12 V PA6 21 VAC 32 GND DIRTY...

Страница 35: ... modules Document No 800 1005 1 29 ASX board X5 Gas mother board X5 Pin No Signal 1 Analog ground 2 N C 3 N C 4 N C 5 15 V 6 15 V 7 DIRB not used 8 RXD 9 TXDB 10 N C 11 RESET 12 5 V 13 15 VDIRTY 14 Digital ground ...

Страница 36: ...C NC 6 DAC1 FLOWY NC DAC0 PRES 7 VOL NC NC 8 FLOW NC NC 9 NC NC NC 10 PRESS NC NC 11 NC NC NC 12 NC NC NC 13 NC NC NC 14 NC NC NC 15 NC NC NC 16 NC NC NC 17 RESET NC NC 18 NC DIR NC 19 NC NC NC 20 NC NC NC 21 RxD NC TxDP 22 NC NC NC 23 NC NC NC 24 NC NC NC 25 NC NC NC 26 NC NC NC 27 NC NC NC 28 NC NC NC 29 NC NC 5 V 30 15 VDIRTY NC 5 V 31 NC NC NC 32 GND DIRTY NC DGND ...

Страница 37: ...s section Unauthorized service may void warranty of the unit NOTE After any component replacement see chapter Adjustments and calibrations CAUTION The ACX 200 photometer and its components are repaired calibrated at the factory Attempts to repair calibrate the unit elsewhere will adversely affect operation of the unit Datex Ohmeda supplies spare ACX 200 photometers The information provided for the...

Страница 38: ...igned after performing the procedure The procedures are designed for monitors with S 5 monitor software of revision 01 However most of the procedures also apply to monitors which contain some other monitor software type revision 3 2 1 Recommended tools Tool Order No Notes Screwdrivers Tools for blocking internal tubes A glass of water Flowmeter Multimeter Gas Interface Cable 2 5 m 884299 Sampling ...

Страница 39: ...nsor 2 Check external parts the module case is intact the four rubber pads under the frame are all in place the metal rear panel is intact the equipotential tap and the sample gas out connector are tightened properly the block screws for the gas interface cable are in place and are tightened properly the D fend latch is functioning properly Install the ACX measuring board Detach the D fend 3 Check...

Страница 40: ...lows Monitor Setup Screen 1 Setup Waveform Fields Field 1 Paw Field 2 Flow Field 3 Off Field 4 O2 Field 5 AA Field 6 CO2 Digit Fields Field 1 Gases 5 Check that the module fan is running 6 Wait until the message Calibrating gas sensor disappears from the screen then enter the Service menu Monitor Setup Install Service password 16 4 34 Service password 26 23 8 Take down the information regarding Ai...

Страница 41: ... unit including the zero valve should be replaced The mentioned parts should not be cleaned NOTE With monitor software S ___95 and S ___96 the Calib zero value for N2O is always shown as a negative value The correct value can be calculated by adding the shown value to the value 65536 10 Check that the Ambient value corresponds with the current ambient pressure 20 mmHg 11 Perform the steam test for...

Страница 42: ...he Amb Work value is within 50 75 and the OM in ref value is equal or higher than 0 If the values differ readjust the flows 18 Check the O2 sensor output voltage Feed calibration gas and check that the value OM volt mV in the menu rises at least to 2800 3500 nominal Adjust the O2 sensor output if necessary NOTE The voltage measurement requires module software 884295 or 885388 If the value is not u...

Страница 43: ...p Install Service password 16 4 34 Service password 26 23 8 Parameters Gas Unit ACX Select Halothane as anesthetic agent Agents Select Agent Hal Previous Menu 20 Perform the fall time measurement in the ACX service menu Check that the measured fall times are within the ranges that are given in the Technical Reference Manual NOTE The fall time measurement can be performed only with module software ...

Страница 44: ...the menu check that the Peak normal value is close to 10 50 0 20 Check also that the difference between the Peak normal and Peak mirror values is not higher than 0 30 If the values do not meet the range repeat the gas calibration Set the AA identification to the automatic mode Agents Select Agent Auto Previous Menu 24 Feed calibration gas order code 755583 and check that the message Desflurane app...

Страница 45: ...ctors pediatric option make sure that the date marking on the D lite is 10 94 or newer If the system leaks heavily no pressure will be generated If there is a small leak in the connections the monitor will measure a pressure difference which is then interpreted as flow and seen on the monitor screen The pressure waveform decreases slowly and the flow waveform either goes above or below the zero li...

Страница 46: ... the message Calibrating gas sensor disappears from the screen 31 Block the tip of the sampling line with your finger and check that the message Sample line blocked appears onto the monitor screen within 30 seconds 32 Detach the D fend and check that the message Check D fend appears onto the screen within 30 seconds Reattach the D fend Simulate at least 5 breaths by feeding calibration gas into th...

Страница 47: ...e module by pulling it up 6 To remove the gas mother board cover remove two front panel screws from the side of the module and the D connector screws 7 The front panel can be detached by removing three screws 8 Tubing system plate with tubes and flow cassettes can be lifted off 9 Fan can be lifted off after plastic pc board rail is detached Gas mother board is attached to the side of the module wi...

Страница 48: ...t on the flow The flow rates are adjusted by changing the flow resistance cassettes constriction cassettes in the sampling system See Table 2 in chapter Gas sampling system for the alternative cassettes The adjustments and the respective constrictions to be adjusted are shown in the next figure see also chapter Gas sampling system to see gas sampling system block diagrams for modules manufactured ...

Страница 49: ...rway modules Document No 800 1005 1 43 Figure 16 Gas sampling system adjustment chart See also chapter Gas sampling system to see gas sampling system block diagrams for modules manufactured since autumn 1998 ...

Страница 50: ... zeroing can be simulated in the ACX Service Menu manually pump start zero valve on The flow rate is adjusted by changing the cassette no 1 CAUTION When changing cassettes make sure that the tubes are reconnected properly Flow to be adjusted Constr No see figure 16 Nominal value tolerance ml min sampling flow 6 200 180 to 220 side flow 3 10 to 27 O2 measurement in 4 and 5 45 to 60 O2 reference in ...

Страница 51: ...V with the trim resistor designated GAIN see figure 17 If the output will not exceed 7 7 V it is acceptable that the output exceeds at least 5 V At that level software is still able to compensate the output 3 Check and if necessary readjust the offset and gain until the readings remain stable 4 Perform gas calibration see User s Reference Manual Temperature compensation adjustment Factory calibrat...

Страница 52: ... the D lite sensor to the airway module To improve the accuracy the endotracheal tube and all accessories which are in normally use should be attached also during the calibration 2 Enter service menu Monitor Setup Install Service Service View Modules 3 Enter the PVX menu After the flow is zeroed Zero OK message displayed attach calibration pump or spirometry tester to the flow sensor D lite or Ped...

Страница 53: ...full If occlusion persists check internal tubing for blockages Check the power supply voltages SELECT AGENT message No anesthetic agent is selected though delivery is started Vaporizer valve is broken Traces of cleaning or disinfecting agent in the water trap container affecting the readouts Replace the water trap No response to any gas Sampling line water trap or internal tubing blocked or loose ...

Страница 54: ...urves extremely low 15 V lost Check voltage from module mother board X1 pin 4 X2 pin 1a X3 pin 1a X4 pin 9 and X5 pin 5 CO2 value high Air leak Sensor Inop Paw and Flow curves extremely high 15 V lost Check voltage from module mother board X1 pin 2 X2 pin 2a X3 pin 2a X4 pin 6 and X5 pin 6 Air Leak message remains on the screen 15 V dirty lost Check voltage from module mother board X1 pin 3 X2 pin...

Страница 55: ... to the sample out connector and drop its other end into a glass of water 3 Block the sample inlet reference flow of the oxygen measuring unit and the CO2 absorber port that draws room air in Wait for one minute There should be less than 1 bubble per 10 seconds coming out of the tube Bubble should not move upwards more than 11 mm per 30 seconds inside the tube If it does there is a leak between th...

Страница 56: ...ee Section Gas Sampling System Adjustments If the O2 signal is noisy check the measurement unit suspension Frequency adjustment may help in some cases see Section Frequency adjustment 4 4 ACX troubleshooting CAUTION The measuring unit ACX 200 can be repaired and calibrated only at the factory The ACX troubleshooting is carried out in the General Troubleshooting scheme The ACX testing is explained ...

Страница 57: ...the tubes from the unit and empty the water from the measuring chamber 10 Attach one silicon tube to the unit and connect the other end of the tube to the gas outlet of the monitor or gas module 11 Switch the monitor on and let the sample out flow dry out the unit at least for 15 minutes 12 Attach the unit back to the monitor or gas module and switch the monitor on 13 Let the monitor run at least ...

Страница 58: ...ASX 100 it is not capable to identify calibration gas R23 therefore the message However the ASX 100 will still calibrate with R23 No response from ASX Communication between ASX unit and Central Unit is lost ASX bench disconnected or faulty Check that the motor is running No identification Is the ASX software on the software list on the service wiev Go to ASX service view and check peak normal valu...

Страница 59: ...ard service page YES NO Figure 19 PVX board troubleshooting flowchart NOTE The PVX software string does not appear onto the list when using the combination of G AOV module and monitor software S ___94 4 7 Gas mother board troubleshooting Due to the complexity of the LSI circuitry there are only a few faults in the CPU digital electronics that can be located without special equipment Check that the...

Страница 60: ...ituations Select agent No agent selected Continuous occlusion Check sampling line and water trap Occlusion over 40 seconds Air leak detected Check water trap and sample gas out flow Press normal screen to continue Air leak over 40 seconds CO2 Zero error Unsuccessful zeroing Unstable Unsuccessful calibration CO2 over scale CO2 signal exceeds the maximum waveform area O2 O2 zero error Unsuccessful z...

Страница 61: ...S 5 Airway modules Document No 800 1005 1 55 5 SERVICE MENU 1 Press the Monitor Setup key 2 Select Install Service password 16 4 34 3 Select Service password 26 23 8 4 Select Parameters Gas Unit ...

Страница 62: ...e 40 49 Zeroing 50 59 Calibrating ERR status Indicates measuring unit malfunction GAS 0 no error 1 error in ACX measuring system 2 error in ACX communication 10 error in ASX measuring system 20 error in ASX communication 40 error in PVX measuring system 80 error in PVX communication Possible failure source Gas CPU ACX ASX or PVX ACX 0 no error if not 0 replace ACX unit ASX 0 no error if not 0 repl...

Страница 63: ...asure sevoflurane and desflurane b 0 No gas measurements available F CO2 O2 N2O and AA measurements available 3 CO2 and O2 available c 0 No ACX ASX nor PVX board running 1 ACX board running 3 ACX and ASX board running 5 ACX and PVX board running 7 ACX ASX and PVX board running d 0 Normal operation state 1 Occlusion 2 Air leak 4 Other sampling system error 8 Replace trap ACX rep status a empty Norm...

Страница 64: ...uiry Bad checksums is a cumulative number that indicates how many times communication from the module to monitor broke down Bad c s by mod is a cumulative number that indicates how many communication errors the module has detected The monitor starts counting these items at power up and resets to zero at power off The nonzero values do not indicate a failure but the continuous counting indicates ei...

Страница 65: ...y from the gas source Check that fall times are O2 480 ms CO2 360 ms N2O 360 ms AA 520 ms NOTE The measurement can be performed only with the modules using module software 884295 Noise measurement O2 CO2 and N2O Feed the calibration gas until the gas values are stabilized on screen Start the measuring by selecting Noise meas from the menu After 10 seconds stop measuring by reselecting Noise meas C...

Страница 66: ... O2 reference flow This pressure difference is automatically checked after every gas zeroing and it should be between 5 to 10 mmHg If the pressure difference turns negative a message Replace trap is displayed when the limit of 5 mmHg is exceeded In S ___97 and S ___98 software there is a software flaw in displaying the pressure difference OM in ref The flaw does not have any effect on the function...

Страница 67: ...of inspired gas volume Typically the value is between 5000 and 9000 depending on which sensor is used adult pediatric Exp Flow Gain Gain of expired gas volume Typically the value is between 5000 and 9000 depending on which sensor is used adult pediatric Common Offset Cancels common error which is caused by pressure from the pressure transducers This is a transducer s own constant The value should ...

Страница 68: ...and all accessories which are in normally use should be attached also during the calibration 2 Enter service menu Monitor Setup Install Service Service Parameters 3 Enter the PVX menu After the flow is zeroed Zero OK message displayed attach calibration pump or spirometry tester to the flow sensor D lite or Pedi lite Select the sensor type 4 Set the calibration volume for adult to 1000 ml and for ...

Страница 69: ...emperature and Humidity These are needed only in calibration procedure Insp Temperature The setting regarding the temperature of inspired gas The value is used in calculations Change if necessary Insp Humidity The setting regarding the humidity of inspired gas The value is used in calculations Change if necessary Exp Temperature The setting regarding the temperature of expired gas The value is use...

Страница 70: ...nd Motor Fluct is the speed fluctuation should be 200 Alc comp val is the compensation factor for alcohol content measured during halothane enflurane or isoflurane measuring Sta shows the status of compensation 0 means off and 1 means on The value without a leading text is for factory use only Peak normal Peak mirror give the place of the spectrum s peak in the channel numbers The peak normal valu...

Страница 71: ...ce If the part is not listed there check the previous revision etc until you find the right number 6 1 1 G AO rev 01 G AiO rev 00 Item Item description Order No Block screw for cables 546096 Nafion tube A or B 500 mm see manual 733383 Nafion tube C 300 mm 733382 Spring for D Fend 875598 Membrane keypad G AO G AOV 879371 Thumb screw AS 3 Airway Module 879511 3 Case Airway module 878864 4 Fan 880049...

Страница 72: ...ump Airway module AS 3 spare part 881298 Use 896238 26 ACX 200 measuring unit 879849 27 Connector sample gas out 871981 31 Cross recess screw M6x16 61678 32 Bushing AS 3 Airway Module 879512 40 Fitting plate G AiO G AiOV G O G OV 880550 6 1 2 G AO rev 02 G AiO rev 01 G AOV rev 00 G AiOV rev 00 Item Item description Order No 14 Gas mother board G AOV G AiOV 881775 Use 885174 20 Front panel unit G A...

Страница 73: ...1 G OV rev 01 Item Item description Order No 3 Case Airway module white 893258 this part is recommended for stock 1 NOTE In case only the plastic spirometry connectors need repair or compatibility with adult pediatric Patient Spirometry accessories is needed the Repair set for spirometry connectors order number 886978 is recommend to be used The Front panel unit order number 888292 does not contai...

Страница 74: ... 42 Dnk 892221 880471 43 Fre 880454 880471 44 Dut 886065 880471 46 Ita 886760 880471 47 Nor 893574 880471 48 Por 895256 880471 Front panel sticker large item No 18 Airway Module Order No G AO 880377 G AiO 880472 G AOV rev 00 01 880472 G AOV Jpn 888314 G AOV rev 02 886980 G AiOV rev 00 01 881301 G AiOV rev 02 886981 G AiOV rev 02 Jpn 890710 G O 885233 G OV 886972 G OV Jpn 890712 6 1 8 S 5 panel sti...

Страница 75: ...389 8000204 NO 8000201 8000204 NL 8000195 8000204 PT 8000198 8000204 SV 8000200 8000204 Front panel sticker large item No 18 Airway Module Order No G AO 8000203 G AiO 8000205 G AOV 8000208 G AOV Jpn 8000390 G AiOV Jpn 8000391 6 1 9 Planned Maintenance PM Kits Airway Module G xxx Order No all versions 8001762 6 1 10 Gas Interface Board B GAS Item Item description Order No Fuse T4A 250V 51134 Ground...

Страница 76: ...formation on those revisions see corresponding manual Revision Manual slot main manual Note G AO Module revision 01 G AiO Module revision 00 Service Manual p n 880850 G AO Module revision 02 G AiO Modules revision 01 G AOV Module revision 01 G AiOV Module revision 01 Service Manual p n 882580 G OV Module revision 01 G O Module revision 01 Technical Reference Manual 885944 6 896624 ...

Страница 77: ...APPENDIX A Service check form S 5 Airway modules Document No 800 1005 1 71 APPENDIX A ...

Страница 78: ...Datex Ohmeda S 5 Anesthesia Monitor Document No 800 1005 1 72 ...

Страница 79: ...st OK N A Test not applicable Fail Test Failed All modules OK N A Fail OK N A Fail 1 Internal parts 2 External parts 2 D fend O rings 3 OM ref filter Notes 5 Fan 6 Module software Gas Unit ACX PVX ASX 7 Module bus communication 8 Membrane key 8 N2O calibration zero 61000 9 Ambient pressure 9 Special tubes 10 CO2 absorber 3 11 Zero valve 10 Leak test 12 Sampling pump 109 mmHg ...

Страница 80: ... min 17 Pressures Amb Work 50 75 mmHg OM in ref 4 mmHg 18 O2 sensor output voltage min 2800 mV OK N A Fail 19 Gas calibration 20 Fall time measurement CO2 fall time 360 ms O2 fall time 480 ms N2O fall time 360 ms AA fall time 520 ms 21 Noise measurement CO2 noise 20 O2 noise 100 N2O noise 150 AA noise 20 AA ID option 22 ACX_ASX Delay 400 800 ms 23 Peak normal and Peak mirror Peak normal 10 30 10 7...

Страница 81: ...ibration gas I D Notes Patient spirometry option 25 Spirometry connectors 26 Spirometry leak test 26 Flow waveform 27 Spirometry tester Notes All modules 29 Fan filter 30 Electrical safety check 30 Occlusion detection 31 Air leak detection 31 Apnea detection 32 Final cleaning Notes Used spare parts Signature ...

Страница 82: ...Datex Ohmeda S 5 Anesthesia Monitor A 4 3 Document No 800 1005 1 ...

Страница 83: ......

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