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Datex-Ohmeda S/5 G-AO Technical Reference Manual Download Page 78

Datex-Ohmeda S/5 Anesthesia Monitor

Document No. 800 1005-1

72

Summary of Contents for S/5 G-AO

Page 1: ...ual 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 ww...

Page 2: ......

Page 3: ...olume 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 N...

Page 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 G...

Page 5: ...as 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 b...

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

Page 7: ...ntation 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 mounta...

Page 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 Extende...

Page 9: ...f 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...

Page 10: ...or 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...

Page 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 micrometer...

Page 12: ...icked 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 pr...

Page 13: ...rce 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 rotat...

Page 14: ...piratory 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...

Page 15: ...he 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 Ox...

Page 16: ...ware 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...

Page 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 g...

Page 18: ...onitor 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...

Page 19: ...re 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 sampl...

Page 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...

Page 21: ...3803 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...

Page 22: ...rough 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...

Page 23: ...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 genera...

Page 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 M...

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

Page 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...

Page 27: ...t 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 permanen...

Page 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 transdu...

Page 29: ...e 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 mothe...

Page 30: ...ump 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 Addre...

Page 31: ...ation 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...

Page 32: ...he 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 Shi...

Page 33: ...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 sup...

Page 34: ...3 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...

Page 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 Dig...

Page 36: ...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 N...

Page 37: ...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...

Page 38: ...gned 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 mon...

Page 39: ...sor 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 tig...

Page 40: ...ows 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 t...

Page 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 val...

Page 42: ...e 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...

Page 43: ...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 th...

Page 44: ...he 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 rang...

Page 45: ...tors 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...

Page 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 with...

Page 47: ...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...

Page 48: ...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 cassette...

Page 49: ...way 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 autum...

Page 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...

Page 51: ...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 o...

Page 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 M...

Page 53: ...ull 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...

Page 54: ...rves 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...

Page 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...

Page 56: ...e 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 troublesh...

Page 57: ...he 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 Swi...

Page 58: ...SX 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...

Page 59: ...rd 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...

Page 60: ...tuations 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...

Page 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...

Page 62: ...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 i...

Page 63: ...sure 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 A...

Page 64: ...iry 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 e...

Page 65: ...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 C...

Page 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 di...

Page 67: ...f 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 90...

Page 68: ...nd 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...

Page 69: ...mperature 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...

Page 70: ...d 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 com...

Page 71: ...e 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 tub...

Page 72: ...mp 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...

Page 73: ...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...

Page 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...

Page 75: ...89 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 80...

Page 76: ...ormation 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 Modu...

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

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

Page 79: ...t 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...

Page 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...

Page 81: ...bration 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 Occ...

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

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