Datex-Ohmeda Aestiva 7900 SmartVent Page 157 Technical Reference Manual Download

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6 Maintenance

1006-0453-000 05/04

6-7

6. Occlude the top of the standpipe tube with your finger, making sure the

tube remains 1/2 inch (15mm) above the blue seal.

7. Check the manifold pressure reading on the service screen. The MOPV

valve is functioning correctly if the steady state pressure reading is
<120cm H

8. Set the system switch to Standby.

9. Remove the test plug from the exhalation valve port.

10. Remove the standpipe from the port and reinstall in the exhalation valve.

11. Reassemble the breathing system.

12. Perform the Preoperative Checkout Procedure in the Aestiva Operation

Manual.

Summary of Contents for Aestiva 7900 SmartVent

Page 1: ...Aestiva 5 7900 Anesthesia Ventilator Technical Reference Manual ...

Page 2: ...uential unit number for identification Aestiva and SmartVent are registered trademarks of Datex Ohmeda Inc Other brand names or product names used in this manual are trademarks or registered trademarks of their respective holders AAA A 12345 This alpha character indicates the year of product manufacture and when the serial number was assigned D 2000 E 2001 F 2002 etc I and O are not used ...

Page 3: ...Software Revisions 1 X 3 X and 4 X This document is not to be reproduced in any manner nor are the contents to be disclosed to anyone without the express authorization of the product service department Datex Ohmeda Ohmeda Drive PO Box 7550 Madison Wisconsin 53707 2004 Datex Ohmeda Inc ...

Page 4: ...erred to within or that abnormal or unusual circumstances may not warrant or suggest different or additional procedures or requirements This manual is subject to periodic review update and revision Customers are cautioned to obtain and consult the latest revision before undertaking any service of the equipment Comments and suggestions on this manual are invited from our customers Send your comment...

Page 5: ...l Competence ii 1 Introduction 1 1 What this manual includes 1 2 1 1 1 Software versions 1 2 1 2 Standard service procedures 1 3 1 2 1 Operation manuals 1 3 1 2 2 Service manuals 1 3 1 2 3 Ventilator tests 1 3 1 3 Symbols used in the manual or on the equipment 1 4 ...

Page 6: ...al 2 10 2 4 4 Power supply integrated CPU 2 11 2 4 5 Sealed lead acid battery 2 12 2 4 6 CPU assembly 2 13 2 4 7 Sensor Interface Board SIB 2 20 2 5 Mechanical subsystems 2 23 2 5 1 Supply gas 2 23 2 5 2 Gas Inlet Valve GIV 2 24 2 5 3 Flow control valve 2 24 2 5 4 Drive Gas Check Valve DGCV 2 25 2 5 5 Bellows Pressure Relief Valve 2 25 2 5 6 Exhalation valve 2 26 2 5 7 Mechanical Overpressure Valv...

Page 7: ...g System Leak Test 4a 21 4a 3 13 Display A D Channels 4a 22 4a 3 14 Display Discrete I O Signals 4a 24 4a 3 15 Display Battery Status 4a 25 4a 3 16 Test Panel Switches 4a 26 4a 3 17 Flow Valve Test Tool 4a 27 4a 3 18 Adjust Drive Gas Regulator 4a 28 4a 3 19 O2 Calibrations 4a 29 4a 3 20 Calibrate Flow Sensors 4a 30 4a 3 21 Pressure Sensitivity 4a 31 4a 3 22 Calibrate Flow Valve 4a 32 4a 3 23 Bleed...

Page 8: ...Battery Charge Status 4b 18 4b 5 4 System Error Log 4b 19 4b 5 5 Alarm log 4b 19 4b 6 Flow Valve Test Tool 4b 20 4b 7 Test Breathing System For Leak 4b 21 4b 8 Adjust Drive Gas Regulator 4b 22 4b 9 Calibrations 4b 23 4b 9 1 Calibrate O2 Sensor 4b 23 4b 9 2 Calibrate Flow Sensors 4b 24 4b 9 3 Pressure Sensitivity Calibration 4b 25 4b 9 4 Calibrate Flow Valve 4b 26 4b 9 5 Calibrate Bleed Resistor 4b...

Page 9: ...ting 5 30 5 6 Power supply test points 5 31 5 6 1 Power supply board original CPU 5 31 5 6 2 Original CPU 5 32 5 6 3 Power supply Integrated CPU 5 33 6 Maintenance 6 1 Supply gas inlet filter 6 3 6 2 Free breathing valve maintenance 6 4 6 3 MOPV differential relief valve test 6 5 6 4 MOPV pressure relief valve test 6 6 7 Repair Procedures 7 1 Control panel assembly 7 2 7 2 Keyboard and EL display ...

Page 10: ...ons 8 2 8 2 Service tools 8 2 8 3 Ventilator Harnesses 8 3 8 4 Electrical enclosure parts original CPU 8 4 8 5 Electrical enclosure parts integrated CPU 8 6 8 6 Display Module 8 8 8 6 1 Rear housing parts 8 8 8 6 2 Front housing parts 8 9 8 7 Aestiva 7900 Vent Engine 8 10 8 7 1 Gas Inlet Valve 8 11 8 7 2 Mechanical Over Pressure Valve MOPV 8 12 8 7 3 Inlet filter 8 13 8 7 4 Free Breathing Valve 8 ...

Page 11: ...his section 1 1 What this manual includes 1 2 1 1 1 Software versions 1 2 1 2 Standard service procedures 1 3 1 2 1 Operation manuals 1 3 1 2 2 Service manuals 1 3 1 2 3 Ventilator tests 1 3 1 3 Symbols used in the manual or on the equipment 1 4 ...

Page 12: ... Policy to service electronic equipment to a board replacement level only Readcompletelythrougheachstepineveryprocedurebeforestarting the procedure any exceptions can result in a failure to properly and safely complete the attempted procedure Unless otherwise specified values in this manual are nominal Sections in this manual begin on odd numbered or right hand pages If there is no text on the pre...

Page 13: ...tup functions tests calibration and measurements from the front panel display Normal operational tests calibration and troubleshooting can be performed on your Aestiva 7900 Ventilator without removing components from the system Repair may require removing the ventilator components from the anesthesia machine w w w w WARNING Section 4 Service Mode Tests and Calibration must be performed whenever yo...

Page 14: ...e or manual uses all of the symbols These symbols include m On power A Alarm silence button L Off power Alarm silence touch key Tec 6 l Standby j Type B equipment n Standby or preparatory state for part of the equipment J Type BF equipment M ON only for part of the equipment D Type CF equipment N OFF only for part of the equipment w Caution ISO 7000 0434 Direct current wW Attention refer to produc...

Page 15: ...solation transformer Z Unlock Linkage system U Close drain Risk of Explosion u Open drain remove liquid Low pressure leak test 134 C Autoclavable r Mechanical ventilation Í Not autoclavable R Bag position manual ventilation q Inspiratory flow Q Expiratory flow t O2 sensor connection O2 O2 Flush button Alarm silence touch key Volume alarms On Off touch key End case touch key Menu touch key ...

Page 16: ...gulator is set to pressure less than 414 kPa 60 psi European Union Representative Systems with this mark agree with the European Council Directive 93 42 EEC for Medical Devices when they are used as specified in their Operation and Maintenance Manuals The xxxx is the certification number of the Notified Body used by Datex Ohmeda s Quality Systems 345 kPa 414 kPa ...

Page 17: ... 2 3 4 Pneumatic Engine 2 7 2 4 Electrical 2 8 2 4 1 Electrical original 2 8 2 4 2 Electrical integrated 2 9 2 4 3 Power supply original 2 10 2 4 4 Power supply integrated CPU 2 11 2 4 5 Sealed lead acid battery 2 12 2 4 6 CPU assembly 2 13 2 4 7 Sensor Interface Board SIB 2 20 2 5 Mechanical subsystems 2 23 2 5 1 Supply gas 2 23 2 5 2 Gas Inlet Valve GIV 2 24 2 5 3 Flow control valve 2 24 2 5 4 D...

Page 18: ...memory Mechanical ventilation is started with the Bag Vent switch on the breathing system The Aestiva 7900 Ventilator reads the status of the Bag Vent switch and the breathing circuit type Circle Bain Mapleson D The operator does not have to set the breathing circuit type from a menu The Aestiva 7900 Ventilator has an operator selectable Heliox mode to permit gas composition compensation when Heli...

Page 19: ...urst overpressure protection 2 3 Aestiva 7900 Ventilator components Components of the ventilator are found in different locations on the Aestiva Anesthesia Machine The ventilator package consists of 1 Ventilator control electronics 2 Control panel and display two mounting options shown 3 Sensor interface board SIB 4 Pneumatic engine Note For the Aestiva 5 MRI machine the display is centrally mount...

Page 20: ...e s AC Inlet module All the power necessary to operate the ventilator and light package comes from the power supply The CPU controls operation of the ventilator Figure 2 2 Aestiva 7900 Ventilator functional block diagram Original CPU Fuses Voltage Selector Filter Connector Board Connector Board 100 120 VAC 220 240 VAC 50 60 Hz AC Inlet Module Toroid Battery Power Supply Board CPU Board Front Panel...

Page 21: ...e need for the toroidal transformer Figure 2 3 Aestiva 7900 Ventilator functional block diagram Integrated CPU AB 29 082 Fuses Voltage Selector Filter Connector Board Connector Board 100 120 VAC 220 240 VAC 50 60 Hz AC Inlet Module Universal Power Supply Battery Power Circuits Digital Circuits Front Panel Assembly Pneumatic Engine Sensor Interface Board Proprietary RS232C Primary RS232C On StandBy...

Page 22: ...luminescent EL display The keyboard front panel A rotary encoder A speaker Figure 2 4 Ventilator control panel with software version 4 X The keyboard and rotary encoder are used to control the operations of the ventilator The front panel uses a three step selection change and approve setting scheme to prevent unwanted selections The speaker supplies audio input to the operator Logical layout of pr...

Page 23: ...e duct under the rear subfloor of the breathing circuit chassis The SIB uses a 50 conductor cable that supplies the link between the Aestiva 7900 Ventilator CPU and the breathing system signals Figure 2 5 Sensor Interface Board SIB 2 3 4 Pneumatic Engine The pneumatic engine enclosure is located in the back chamber of the breathing system and is shielded to contain EMI emissions The enclosure incl...

Page 24: ...rocontroller Memory and I O Decoding Flash SRAM EEPROM SCR Circuitry D A Converter Watchdog System Inlet Valve Control Drive 10 VA limited Flow Valve Control Drive 10 VA limited A D Converter 15 VDC Supply 10VA limited DC Supply Monitoring EL voltage 10 14 5V 10 5W max 12V light output 15W max 15V 170mA max 15V 100mA max 5V 1 8A max 5 5 1 4A max Pneumatic Engine Connector board Flow valve Inlet va...

Page 25: ...sh SRAM EEPROM SCR Circuitry D A Converter Watchdog System Inlet Valve Control Drive 10 VA limited Flow Valve Control Drive 10 VA limited A D Converter 15 VDC Supply 10VA limited DC Supply Monitoring Pneumatic Engine Connector board Flow valve Inlet valve SIB Inspiratory Expiratory flow transducers Drive Pressure Limit Switch Manifold Pressure Transducer Patient Airway Pressure Transducer 50 7 RS2...

Page 26: ...tifier Filter Secondary DC to DC Converter 2 VSW Linear Regulator VBOOT Linear Regulator Linear Regulator Linear Regulator Linear Regulator Step Down Controller 12 V Battery Battery Charge Controller Primary DC to DC Converter Bridge Rectifier Filter Caps Toroid Isolation Transformer Entry Module EMI Filter Fuse Voltage Selector 5V VDD Digital IBatt VBatt Charger Disconnect 0 25A 5 8V 5 5V Valves ...

Page 27: ...OG SUPPLY LDO POWER CORD AC INLET AC TO DC POWER SUPPLY 85 264 VAC VCHGR 16 0 TYPICAL VMAIN 12 5V TYPICAL MOSFET SWITCHES SELECT VMAIN OR VBAT AS OUTPUT TO VBUS DIODE OR VMAIN VCHGR VBAT VBUZZER OUTPUT TO VDD FAIL BUZZER VSWITCH ON STANDBY SWITCH CIRCUIT 12V BATTERY THERMAL AUTO RESETABLE FUSE BATTERY CHARGER BULK CHARGE 400mA CHARGER and TRICKLE DISABLE VOLTAGE and CURRENT MONITOR VBUS TASK LIGHT...

Page 28: ... in case of a power failure Thus the battery is in a float charge state most of the time Batteries meet the following Capacity to operate unit for 30 minutes Long float charge life Battery pack is internally fused in line replaceable Battery terminals and connecting wires are protected against short circuits II I In n n np p p pu u u ut t t t Nominally 13 7 VDC at 25o C during float charge O O O O...

Page 29: ...io alarm Regulator output manifold pressures 1 2 2 9 11 4 2 12 1 10 5 1 1 1 D0 D15 4 D0 D15 14 2 2 5 1 7 2 14 1 6 6 1 4 1 3 3 3 MC68340 MICROCONTROLLER EEPROM 2K X 8 STATIC RAM 128K X 16 FLASH MEM 512K X 16 VENTILATION CONTROL ADDRESS DECODING ADC SEQUENCER WATCHDOG LOGIC 12 BIT A D CONVERTER D0 D15 DIGITAL INPUT 0 24 CHANNEL MUTIPLEXER D8 D15 A0 A11 D8 D15 12 BIT D A CONVERTER SYSTEM DATA BUS ADD...

Page 30: ... establishes the communication baud rate with a higher limit of 19 2k Baud Special operating modes The serial channels are capable of operating in various looping modes for self testing as well as for remote testing of serial communications These tests include automatic echo local loop back and remote loop back Memory and I O decoding Microprocessor Chip Selects The four programmable chip selects ...

Page 31: ... the flow and inlet valves in the event of a non recoverable error Use of an operating mode watchdog for logic and timing monitoring with direct de energizing of the flow and inlet valves in the event of a non recoverable error Monitoring of the system clock to detect an operating frequency out of an acceptable range Use of a redundant high pressure limit safety switch in the bellows drive circuit...

Page 32: ...a 7900 Ventilator consists of two major building blocks The first is an analog to digital converter ADC system and the second is a digital to analog converter DAC system This portion of the Aestiva 7900 Ventilator allows the microprocessor to interface with valves and pressure transducers The data acquisition system is also used for internal monitoring of safety relevant signals The ADC system is ...

Page 33: ...exer settles quickly within 8 µ sec to 0 01 to be stable for the ADC 12 Bit conversion and to maintain the overall 20 µ sec conversion time The system bandwidth requirement is from dc to 20Hz The multiplexer is an 8 channel fault protected device and the amplifier used as a buffer to drive the A D converter AD822AR A D converter The MAX191BCWG is a 12 Bit converter that operates from a single 5 Vo...

Page 34: ...ve during mechanical ventilation This circuit does not require adjustment and is accurate within 2 of full scale This circuit also limits the flow valve output to less than 10VA under normal operation and under a single fault condition This is a requirement of the international regulation IEC 601 2 13 A signal proportional to the actual drive current is input to the A D converter to permit the pro...

Page 35: ...is quadrature signal is debounced and routed to a quadrature clock converter which interrupts the 68340 processor at each detent position Audio alarm The circuit consists of a programmable sound generator and a LM4860M audio amplifier The sound generator interfaces directly to the CPU and the audio amplifier drives an 8 ohm speaker It is normally powered from the low dropout regulator using the 5 ...

Page 36: ...nditioning circuitry is supplied for these transducers and for the Oxygen sensor used in the breathing circuit The SIB for the Aestiva 7900 Ventilator is located in the cable duct in the bottom of the breathing circuit chassis Input gas hoses and signal cables are routed from the sensors and switches in the breathing circuit to the SIB A 50 conductor cable is used to transfer power and signals to ...

Page 37: ...riving a 0 001 mF capacitor The capacitor is used to keep a low output impedance at RF frequencies to improve EMI immunity Manifold pressure measurement The manifold pressure is measured from a port on the ventilator pneumatic engine A pressure range of 20 to 120 cm H2O produces a proportional DC output voltage in the range of 0 3V to 3 8V with zero pressure supplying 0 8V This pressure transducer...

Page 38: ...n the same manner as the patient airway pressure transducer The block diagram shows the pneumatic and electrical connections to the variable orifice flow sensors Calibration data for the flow sensor is stored in an EEPROM in each of the sensors When directed by system software a logic 1 enable signal turns on 5 VDC power to the EEPROM A differential clock signal is sent to the SIB where it is tran...

Page 39: ...e Valve MOPV Bleed resistor Free breathing valve Drive gas pressure limit switch Exhalation valve Breathing circuit flow sensors Bellows assembly 2 5 1 Supply gas Supply gas can be selected from O2 or Air is supplied from the anesthesia machine at a pressure of 241 to 690 kPa 35 to 100 psi This supply gas is filtered through the 5 micron filter to remove any minute particles of contaminate The fil...

Page 40: ... relieving pressure regulator that regulates high pressure filtered supply gas oxygen or medical air down to 172 kPa 25 psi Figure 2 14 Pressure regulator 2 5 3 Flow control valve The flow control valve is controlled by the CPU Signals are sent to the flow control valve of the necessary flow determined by ventilator settings and sensor signals The flow control valve modulates the incoming 172 kPa ...

Page 41: ...n the breathing system The exhalation valve and pressure relief valve or pop off valve in the bellows assembly control the pressure in the two gas circuits and exhaust drive gas and excess fresh gas The Bellows Pressure Relief Valve PRV is normally closed maintaining approximately 1 5 cm H2O in the breathing circuit in a no flow condition enough to keep the bellows inflated It is piloted closed du...

Page 42: ...nical Overpressure Valve MOPV is a mechanical valve that operates regardless of electrical power on or off This valve has two functions First it functions as a third level of redundancy to the ventilator s pressure limit control functions supplying pressure relief at approximately 110 cm H2O Second the MOPV valve functions as a backup in the event of a complete blockage of the exhalation valve sys...

Page 43: ...ve is closed on mechanical inspiration 2 5 10 Breathing circuit flow sensors Two flow sensors are used to monitor inspiratory and expiratory gas flow The inspiratory flow sensor is downstream of the gas system inspiratory check valve Feedback from the inspiratory transducer is used to supply tidal volumes that make allowances for the effects of fresh gas flow and circuit compressibility The expira...

Page 44: ...Notes 2 28 05 04 1006 0453 000 ...

Page 45: ...1006 0453 000 05 04 3 1 3 Post Service Checkout In this section 3 1 Post service checkout 3 2 3 1 1 Test the Aestiva 7900 Ventilator 3 2 3 1 2 Test the Aestiva Anesthesia Machine 3 2 ...

Page 46: ...viceof the ventilator Failure to do so may result in patient injury w WARNING All components and accessories must be connect correctly All hoses and cables must be properly connected before returning the anesthesia machine to clinical use Failure to do so may result in patient injury 3 1 1 Test the Aestiva 7900 Ventilator Perform the Preoperative Checkout Procedure in Part 1 of the Aestiva Operati...

Page 47: ...nsure proper operation the Aestiva 7900 Ventilator includes several tests that run automatically self tests and a series of menu pages that a qualified service person can use to test calibrate or troubleshoot ventilator related components in the Aestiva machine Service Mode 4a 1 Self tests 4a 3 4a 2 Service Mode Confirmation menu 4a 4 4a 3 Main Menu Service Mode 4a 5 4a 3 1 Alarm Log 4a 6 4a 3 2 E...

Page 48: ...a 24 4a 3 15 Display Battery Status 4a 25 4a 3 16 Test Panel Switches 4a 26 4a 3 17 Flow Valve Test Tool 4a 27 4a 3 18 Adjust Drive Gas Regulator 4a 28 4a 3 19 O2 Calibrations 4a 29 4a 3 20 Calibrate Flow Sensors 4a 30 4a 3 21 Pressure Sensitivity 4a 31 4a 3 22 Calibrate Flow Valve 4a 32 4a 3 23 Bleed Resistor Calibration 4a 33 4a 3 24 Service Calibrations Required 4a 34 ...

Page 49: ...sted to determine pass failure If the GIV causes the self test to fail on power up an alarm sound and the message Gas Inlet Valve Failure is displayed If the calibration of the manifold sensor fails on power up an alarm sounds and the message Manifold Pressure Sensor Failure is shown Continuous tests These tests are run continuously during normal operation and alarms are associated with each test ...

Page 50: ...system switch to On Hold the adjustment knob pushed in until the Service Mode Confirmation menu appears Use the adjustment knob to highlight Service Mode then push the adjustment knob to confirm the selection If the machine is already in normal operation set the Bag Vent switch to Bag Press End Case key press the VT Pinsp the PEEP and the menu switches at the same time to reset the software poweru...

Page 51: ...vigation to the individual menus for alarm or error logs calibrations system configurations diagnostic tests and tools and user selected defaults Figure 4 2 Service Mode main menu Any menu can be selected by pressing the control knob The software version software date and total system hours at the top of the Service Mode main menu are not selectable Go to Normal Operations Provides the means to ex...

Page 52: ...enumberoftimesthatthespecificalarmconditionhasoccurred during the noted bootup count Alarm message associated with the particular alarm condition Figure 4 3 Alarm Log menu The bottom left corner of the screen displays additional information Bootup Count Last Cleared Current Bootup Count Clear Alarm Log Select to clear the alarm log The system will ask you to confirm that you want to clear the log ...

Page 53: ...liseconds since bootup when the latest error condition occurred Address the place in the software sequence where the last occurrence of the error took place Error message associated with the particular error condition Figure 4 4 Error Log menu The error address and software revision are important pieces of information to note if technical support is required The bottom left corner of the screen di...

Page 54: ...itude settings range from 400 to 3600 meters in increments to 100 meters Figure 4 6 Altitude menu item 4a 3 3 2 Drive Gas Either O2 or Air can be used as the drive gas for the ventilator s pneumatic engine To compensate volume calculations for the specific density of the drive gas used the drive gas selection on this menu must match the actual drive gas To change the actual drive gas refer to sect...

Page 55: ...iox Mode should be set to Off With the Heliox Mode Off the Setup Calibration menu will not include the Heliox option Figure 4 8 Heliox Mode menu item 4a 3 3 4 VE Alarm Limits The setting for VE Alarm Limits determines how the VE Alarm Limits are set If VE Alarm Limits is set to User Adjustable the user sets the limits on the Alarm Settings menu If VE Alarm Limits is set to Automatic the ventilator...

Page 56: ... However the majority of service confirmation and calibration modes are shown in English The other language choices are shown in specific language text with the exception of Japanese which is shown in English Dutch Nederlands English English French Français German Deutsch Italian Italiano Japanese Japanese Polish Polski Portuguese Português Spanish Español Figure 4 10 Language menu item ...

Page 57: ...1006 0453 000 05 04 4a 11 4a 3 4 6 Optimal Screen Contrast The Screen Contrast menu is used to select the display brightness The values range from 1 to 10 with 10 having the most screen contrast Figure 4 11 Optimal Screen Contrast menu item ...

Page 58: ...ow Flow Trigger Level Insp Termination Level Tinspired Figure 4 12 Page 1 of User Select Defaults menu Figure 4 13 Page 2 of User Select Defaults menu Powerup End Case Settings If Last Case is selected the system saves settings when the unit is turned off and powers up with the same settings If Facility Defaults is selected the system powers up with the default facility settings and returns to def...

Page 59: ... Mode Tidal Volume VT Inspired Pressure Pinspired Respiratory Rate I E Ratio Pressure Limit Plimit Inspiratory Pause Low O2 Alarm Limit High O2 Alarm Limit Low VE Alarm Limit High VE Alarm Limit Low VTE Alarm Limit High VTE Alarm Limit Trigger Window optional Flow Trigger Level optional Inspiratory Termination Level optional Tinspired ...

Page 60: ...clic Redundancy Check A CRC value has been calculated for the Flash ROM memory and this value is stored in the Flash ROM This test recalculates the CRC for the Flash ROM and compares it to the value stored in Flash ROM If the value that was calculated does not equal the value that was stored in Flash ROM the test will fail Finally the software tests all the external and display RAM memory with a w...

Page 61: ...M The software tests all the EEPROM memory via a bit pattern test It writes a certain pattern to a block of memory and then reads back that block of memory If the bit pattern that was written is not the same bit pattern that it reads back the test fails Figure 4 16 Test EEPROM menu ...

Page 62: ...H2O the test fails otherwise the test continues The software then closes the flow valve and opens the GIV It reads the A D channel for the GIV If the A D channel for the GIV does not read open the test fails Figure 4 17 Test GIV menu GIV Test FAIL instructions Failure can be caused by the valve or the CPU board malfunctioning Use a multimeter to measure the resistance of the GIV solenoid It should...

Page 63: ...sengage the drive gas from the breathing system by removing the bellows housing Figure 4 18 Test Flow Valve menu Flow Valve Test FAIL instructions A failure can be caused either by the drive circuit or a flow valve malfunction Go to the Flow Valve Test Tool menu to check the drive circuit for proper voltage output Set the flow control to output 120 liters per minute Unplug the connector from the p...

Page 64: ... typical reading is 112 cm H2O not the actual pressure at the switch If the DPL switch never trips within 15 seconds the test fails If the DPL switch does not trip at a pressure within the correct tolerance the test fails Figure 4 19 Test Drive Pressure Limit Switch menu Drive Pressure Limit Switch FAIL instructions Go to the Discrete I O signal menu and check the DPL Drive Pressure Limit switch s...

Page 65: ... VDD is derived in the power section of the control board It is used to power the digital circuits throughout the ventilator If the 5 Volt supplyfails theventilatorwillsoundacontinuousalarmtonewhenthesystem switch is turned on To test the 5V Fail Alarm follow the directions on the screen If the alarm tone does not sound replace the CPU board see section 7 Figure 4 20 Test 5V Fail Alarm menu ...

Page 66: ...e back of the ventilator and are identified with the following symbol Each test routine sets up the serial port circuits so transmitted data is echoed directly back to the receive circuits The test fails if the data sent out is not equal to the data received If only the Proprietary Port Test fails replace the CPU If both tests fail check the harness connections between the control board and the Se...

Page 67: ...observing how quickly they fall on their own weight part of the machine checkout procedure The Breathing System Leak Test allows you to more precisely test the ventilator portion of the breathing circuit for leaks By using the patient circuit to establish a closed loop you can measure the leak rate The leak rate is the fresh gas flow needed to maintain 30 cmH2O The system should have a leak rate 2...

Page 68: ...for each of the A D channels Figure 4 23 Page 1 of Display A D Channels menu Figure 4 24 Page 2 of Display A D Channels menu Remarks This selection displays a listing of A D Channels which are at various values depending upon the set parameters Refer to the following table for additional details for each of the displayed channels ...

Page 69: ... O2 0 4095 0 to 100 0 to 100 Count weight and limits are determined during O2 calibration Flow Current Sense 0 4095 0 to 1 024 Amp 0 to 1 024 Amps Flow DAC Feedback 0 4095 0 to 4 095 Volts 0 to 4 095 Volts Battery Voltage 1740 3976 7 to 16 Volts 0 to 16 48 Volts 7V Low battery voltage failure 11 65V Low battery voltage warning 16 Volts 10 Sec High battery voltage failure Battery Current 700 4000 6...

Page 70: ...iscrete I O Signals menu Mechanical switches ACGO Switch Status Ventilation or Aux CGO machines with ACGO CO2 Bypass Off or On Canister Status Closed or Open Control Panel Cover Closed or Open Bag Vent Status Bag or Vent Pneumatic switches Pressure Limit Status Off or On O2 Flush Status Off or On O2 Supply Pressure Status Pressure or No Pressure Electronic switches O2 Sensor Status Connected or Di...

Page 71: ... the battery has been on charge for several hours and you get a battery is not charged display Check the battery in line cable fuse If the fuse is good the battery is bad and you should replace it B B B Ba a a at t t tt t t te e e er r r ry y y y S S S St t t ta a a at t t tu u u us s s s V V V Va a a all l lu u u ue e e es s s s D D D Dii i is s s sp p p pll l la a a ay y y ye e e ed d d d On Bat...

Page 72: ... the button will contain an x After testing all the buttons and the control knob select Test Encoder Knob Turn As you turn the encoder knob verify that eachclickoftheencoderintheclockwisedirectionincrementstheclockwise total each click of the encoder in the counterclockwise direction increments the counterclockwise total Remarks If any of the select buttons test fails replace the front panel keybo...

Page 73: ...ve key pressure and flow measurements on the same screen This is mainly used to test the drive gas circuit and MOPV valves as detailed in the MOPV test procedure see section 5 4 However it can also be used for other troubleshooting procedures whenever a set flow is required Figure 4 28 Flow Valve Test Tool menu N N N No o o ot t t te e e e The flow does not turn off automatically The flow must be ...

Page 74: ...ration Figure 4 29 Adjust Drive Gas Regulator menu Remarks The drive gas regulator should provide a constant gas input pressure of 172 kPa 25 psi You can verify this pressure by attaching a pressure test device to the regulator pressure port shown below and performing the above procedure If required adjust the regulator to 172 1 72 kPa 25 0 25 psi Figure 4 30 Location of the regulator pressure por...

Page 75: ... O2 sensor is exposed to room air 21 O2 If this A D value is not within the tolerance the calibration fails If the calibration passes the A D value is stored in the EEPROM The sensor must be calibrated at 21 O2 before calibration at 100 O2 Figure 4 31 O2 Calibrations menu Remarks Remove the O2 sensor from the breathing system and expose it to room air The displayed reading should be 21 2 to pass t...

Page 76: ...e correct tolerance the calibration fails If the calibration passes the offset A D values at which the inspiratory flow expiratory flow airway pressure and manifold pressure transducers were calibrated at are stored in the EEPROM Figure 4 32 Calibrate Flow Sensors menu Remarks Fail indicates a problem with the SIB Inspect the Bulkhead Connector and SIB tubing for moisture or possible occlusion Che...

Page 77: ...essfully performed using a Bain Mapleson D breathing circuit module Install a Circle module to perform the calibration Figure 4 33 Pressure Sensitivity menu Pressure sensitivity FAIL instructions Flow Sensor Leak Test 1 Select Display A D Channels from the Diagnostic Tests Tools menu Set Fresh gas flow to 2 LPM Open the APL valve 0 cm H2O Place Bag to Vent switch in the Bag APL position Connect a ...

Page 78: ...g not with the sensor 4a 3 22 Calibrate Flow Valve The software prompts the user to perform the procedural steps to calibrate the flow valve This is an automated calibration It gradually opens the flow valve and monitors the manifold pressure When the manifold pressure reaches 1 9 to 2 0 cm H2O the value at which the flow valve has been opened is saved The flow valve is then closed The value at wh...

Page 79: ...ets the flow to 12 L min 4 Wait for the flow to stabilize 5 Repeat steps 1 4 replacing step 3 with progressively smaller flows There are 12 points that are calculated for the bleed resistor calibration If the calibration passes the calculated bleed resistor calibration points are stored in EEPROM Remarks If the bleed resistor calibration test fails check altitude and drive gas settings Ensure that...

Page 80: ... alarm message is only removed when all the required settings or calibrations are completed Remarks The Set Service Calibration menu item is used by the factory to activate the Service Calibration alarm and require that all settings and calibrations be performed when the Aestiva machine is set up for operation at its permanent location There is no need to set the Service Calibration w alarm in the...

Page 81: ...4a Tests and Calibration 4 X Software 1006 0453 000 05 04 4a 35 Figure 4 38 Service Calibration full menu ...

Page 82: ...Notes 4a 36 05 04 1006 0453 000 ...

Page 83: ...software Tests and Calibrations for version 4 X software are located in section 4a In this section To ensure proper operation the Aestiva 7900 Ventilator includes several tests that run automatically self tests and a series of menu pages that a qualified service person can use to test calibrate or troubleshoot ventilator related components in the Aestiva machine Service Mode 4b 1 Self tests 4b 3 4...

Page 84: ...Charge Status 4b 18 4b 5 4 System Error Log 4b 19 4b 5 5 Alarm log 4b 19 4b 6 Flow Valve Test Tool 4b 20 4b 7 Test Breathing System For Leak 4b 21 4b 8 Adjust Drive Gas Regulator 4b 22 4b 9 Calibrations 4b 23 4b 9 1 Calibrate O2 Sensor 4b 23 4b 9 2 Calibrate Flow Sensors 4b 24 4b 9 3 Pressure Sensitivity Calibration 4b 25 4b 9 4 Calibrate Flow Valve 4b 26 4b 9 5 Calibrate Bleed Resistor 4b 27 4b 1...

Page 85: ...nlet Valve Failure is displayed An error code 1002C will register on the error code service mode menu If the calibration of the manifold sensor fails on power up an alarm sounds and the message Manifold Pressure Sensor Failure is shown An error code 1003E will also show on the error code service menu Continuous tests These tests are run continuously during normal operation and alarms are associate...

Page 86: ...ice Mode Confirmation menu appears Use the adjustment knob to highlight Service Mode then push the adjustment knob to confirm the selection If the machine is already in normal operation set the Bag Vent switch to Bag Then press the VT Pinsp the PEEP and the menu switches at the same time to reset the software powerup Push and hold the adjustment knob until the Service Mode Confirmation menu appear...

Page 87: ...edish would be shown as Svenska The language choices are English French German Italian Spanish Japanese Dutch Swedish The language setting is stored in EEPROM with the default setting as English 4b 2 3 Set the serial connection There are two serial ports on the Aestiva 7900 Ventilator the Datex Ohmeda proprietary channel and the public channel The proprietary channel is used for software developme...

Page 88: ...eparately Minor differences are noted in the text Software 3 X Software 1 X Figure 4b 2 Service mode main menu The service mode has a top level main menu screen which displays all the selectable service tests in categorical order Diagnostic Tests Tools Calibrations and User settings Any service test can be selected from this menu with the adjustment knob cursor The software version is shown at the...

Page 89: ...register s have failed CPU test FAIL instructions Upon FAIL replace the CPU board see Section 7 5 4b 4 2 Test External RAM The software tests all of the external RAM memory with a walking bit pattern test It writes a certain bit pattern to a block of memory and then reads that block of memory If the bit pattern that it wrote is not the same bit pattern that it reads back the test fails External RA...

Page 90: ...isplay RAM test FAIL instructions Upon FAIL replace the CPU board see Section 7 5 4b 4 4 Test Flash ROM The software tests the Flash ROM via a CRC check Cyclic Redundancy Check A CRC value has been calculated for the Flash ROM memory and this value is stored in the Flash ROM This test recalculates the CRC for the Flash ROM and compares it to the value stored in Flash ROM If the value that was calc...

Page 91: ...is pressed the number next to the button is reverse highlighted If the button is pressed and the number next to the button does not reverse highlight the test for that button failed If all of the buttons are pressed and all of the numbers next to the buttons are reverse highlighted the button press test passes The control wheel turn test works the same way The user is prompted to turn the control ...

Page 92: ...is echoed directly back to that serial port The test fails if the data sent out is not equal to the data received The status of the test is displayed on the ventilator s front screen The software checks the serial ports to ensure any data sent out is looped back as a direct echo If the returned data is not the same as that sent the ports test fails Serial port test FAIL instructions Upon FAIL repl...

Page 93: ...ent switch to Vent disengage the drive gas from the breathing system by removing the bellows housing Flow valve test FAIL instructions A failure can be caused either by the drive circuit or a flow valve malfunction Go to the Flow Valve Test Tool menu see section 4b 6 to check the drive circuit for proper voltage output Set the flow control to output 120 liters per minute Unplug the connector from ...

Page 94: ...drop below 0 5 cm H2O the test fails otherwise the test continues The software then closes the flow valve and opens the GIV It reads the A D channel for the GIV If the A D channel for the GIV does not read open the test fails GIV test FAIL instructions Failure can be caused by the valve malfunctioning or the CPU board Use a multimeter to measure the resistance of the GIV solenoid It should be appr...

Page 95: ... of the drive gas check valve the typical reading is 112 cm H2O not the actual pressure at the switch If the DPL switch never trips within 15 seconds the test fails If the DPL switch does not trip at a pressure within the correct tolerance the test fails Pressure limit switch FAIL instructions Go to the Discrete I O signal menu and check the DPL Drive Pressure Limit switch status Off Remove the re...

Page 96: ...rd non integrated theVDDvoltageis derived on the power supply board In machines with an integrated CPU board the VDD voltage is derived in the power section of the CPU board If the VDD supply fails the ventilator will sound a continuous alarm tone when the system switch is turned on The alarm is generated on the CPU board through a dedicated sound source that is part of the CPU board To test the 5...

Page 97: ... 1 Display A D channels The software displays the A D values for each of the A D channels Remarks This selection displays a listing of A D Channels which are at various values depending upon the set parameters Refer to the following table for additional details for each of the displayed channels ...

Page 98: ... Current Sense 0 4095 0 to 1 024 Amp 0 to 1 024 Amps Flow DAC Feedback 0 4095 0 to 4 095 Volts 0 to 4 095 Volts GIV Current Sense3 2371 3884 143 7 to 235 4 mA 0 to 248 2 mA Off state reading is 0 to 259 counts O2 Concentration 0 4095 0 to 100 0 to 100 Count weight and limits are determined during O2 calibration 1 225 Voltage Reference 1214 1235 1 214 to 1 235 Volts 0 to 4 095 Volts 5 8V Voltage Te...

Page 99: ...ical switches Control Panel Cover Closed or Open CO2 Bypass Off or On ACGO Switch Status Ventilation or Aux CGO machines with ACGO Bag Vent Status Bag or Vent Canister Status Closed or Open Pneumatic switches O2 Supply Pressure Status Pressure or No Pressure O2 Flush Status Off or On DPL Switch Status Off or On Electronic switches O2 Sensor Status Connected or Disconnected Circuit module ID Off ta...

Page 100: ... volts the battery charge status displays that the battery is not charged If it is greater than or equal to 12 5 volts the battery charge status displays that the battery is charged Battery Charge Status Battery Charged greater than 12 5 volts Remarks If the battery has been on charge for several hours and you get a battery is not charged display Check the battery in line cable fuse If the fuse is...

Page 101: ... the system time is listed in ticks One tick equals 10 ms Software note The Bootup Count When Log Last Cleared entry is not supported in revision 1 X software Remarks The software clears the errors that have been logged when Clear Error Log is set so a new listing may be compiled 4b 5 5 Alarm log The software displays the 10 most current errors that have been logged All alarms are listed in sectio...

Page 102: ...It allows you to manually control the flow valve setting from 0 closed to 120 LPM in 1 LPM increments and observe key pressure and flow measurements on the same screen This is mainly used to test the drive gas circuit and MOPV valves as detailed in the MOPV test procedure see Section 6 4 However it can also be used for other troubleshooting procedures whenever a set flow is required ...

Page 103: ...leak rate The leak rate is equal to the fresh gas flow needed to maintain 30 cm H2O The system should have a leak rate 200 mL Software 3 X Software 1 X Remark Refer to the 3 X software menu to clarify two items on the 1 X software menu In step 2 set the fresh gas flow to minimum In step 6 you can occlude the patient circuit by connecting the open end of the patient Y to the plug that is part of th...

Page 104: ...tablishes the required flow rate through the drive gas regulator for proper calibration Remarks The drive gas regulator should provide a constant gas input pressure of 172 kPa 25 psi You can verify this pressure by attaching a pressure test device to the regulator pressure port shown below and performing the above procedure If required adjust the regulator to 172 1 72 kPa 25 0 25 psi Regulator pre...

Page 105: ...calibration passes the A D value at which the O2 sensor was calibrated is stored in the EEPROM Note a circle module is required for all calibrations The sensor must be calibrated at 21 O2 before calibration at 100 O2 Remarks Remove the O2 sensor from the breathing circuit module and expose it to room air for approximately 3 minutes The displayed reading should be 21 2 to pass the calibration requi...

Page 106: ...lues are not within the correct tolerance the calibration fails If the calibration passes the offset A D values at which the inspiratory flow expiratory flow airway pressure and manifold pressure transducers were calibrated at are stored in the EEPROM Remarks Fail indicates a problem with the SIB Inspect the Bulkhead Connector and SIB tubing for moisture or possible occlusion Check for bad differe...

Page 107: ...vity Calibration can not be successfully performed using a Bain Mapleson D breathing circuit module Install a Circle module to perform the calibration Pressure sensitivity FAIL instructions Flow Sensor Leak Test 1 Select Display A D Channels from the main service menu Set Fresh gas flow to 2 LPM Open the APL valve 0 cm H2O Place Bag to Vent switch in the Bag APL position Connect a short tube betwe...

Page 108: ...e leak is in the tubing not with the sensor 4b 9 4 Calibrate Flow Valve The software prompts the user to perform the procedural steps to calibrate the flow valve This is an automated calibration It gradually opens the flow valve and monitors the manifold pressure When the manifold pressure reaches 1 9 to 2 0 cm H2O the value at which the flow valve has been opened is saved The flow valve is then c...

Page 109: ...and so on to 1 L min Therefore there are 12 points that are calculated for the bleed resistor calibration Calibration points may be greater than the listed cm H2O but if any one of these points is less than the cm H2O listed below calibration fails If the calibration passes the calculated bleed resistor calibration points are stored in EEPROM Remarks If the bleed resistor calibration test fails ch...

Page 110: ...chedule Service Calibrations alarm message is only removed when all the required settings or calibrations are completed Remarks The Set Service Cal menu item is used by the factory to activate the Schedule Cal Due alarm and require that all settings and calibrations be performed when the Aestiva machine is set up for operation at its permanent location There is no need to set the Schedule Cal Due ...

Page 111: ... sensors or setting must be performed when the Sensors Cal Due alarm appears in normal operation After the cal setting is properly completed the text for that cal setting will be removed If the Sensor s Cal Due alarm is not active the menu displays the text Sensor s Cal Due alarm not active No calibrations required Software 1 X ...

Page 112: ...Gas This provides the user with the means to tell the ventilator which drive gas is being used w Caution Ifyouchangethedrivegas youmustalsochangethedrivegasselection on the service setup screen If the drive gas selection and the actual drive gas do not agree volumes will not be correct To change the actual drive gas refer to Section 4 Repair Procedures of the Aestiva Anesthesia Machine Service Man...

Page 113: ...ct Heliox Mode This provides the user with the means to select the Heliox mode with systems having ANSI gas systems with Heliox flow tubes installed Set Select Heliox Mode to Available to allow the user to turn Heliox mode on or off during the normal operations mode Set Select Heliox Mode to Not Available to prevent the user from turning Heliox mode on during normal operation ...

Page 114: ...sets the limits on the Alarm Settings menu 4b 12 6 User Select Defaults This menu feature is only available in 3 X software The User Select Defaults menu determines the control settings used by the system at power up If last set is selected the system saves its settings when you turn it off and powers up with the same settings If facility defaults is selected the system powers up with default faci...

Page 115: ...X 3 X Software 1006 0453 000 05 04 4b 33 w w w w CAUTION Ask the customer BEFORE you change any default settings Make sure that they understand these options can only be set in Service Mode Screen with facility defaults selected ...

Page 116: ...Notes 4b 34 05 04 1006 0453 000 ...

Page 117: ... for Software Revision 4 X 5 3 5 2 2 Error codes for Software Revisions 1 X and 3 X 5 3 5 3 Alarm messages 5 7 5 4 Mechanical electrical troubleshooting guide 5 24 5 5 Troubleshooting Flowcharts 5 26 5 5 1 Ventilator assessment process 5 26 5 5 2 No display troubleshooting 5 27 5 5 3 Inaccurate volume ventilation troubleshooting 5 28 5 5 4 No ventilation troubleshooting 5 29 5 5 5 High intrinsic P...

Page 118: ...e ventilator causing a continuous interruption the ventilator s internal reset repeats until the interference ceases If the electrical interference is continuously present and mechanical ventilation is interrupted for approximately 30 seconds the ventilator produces a continuous beeping audio alarm Manual ventilation of the patient must be performed while the mechanical ventilation is interrupted ...

Page 119: ... code hex Description of error logged Service action 10020 Software error Clear error log and reboot the system 10021 Defaults loaded to non volatile memory EEPROM This is NORMAL if you have just loaded new software 1 If EEPROM or CPU board were replaced clear error log and reboot 2 EEPROM failure replace EEPROMs 3 Replace CPU board 10022 Software error Clear error log and reboot the system 10023 ...

Page 120: ... continues replace CPU board 1003E Minimum system monitoring caused by manifold pressure sensor failure Reboot system If problem continues replace SIB board 1003F 10041 Software upset Sample causes includes too many key pushes too fast Reboot system If problem continues replace CPU board 10042 The system clock has been reprogrammed CPU timer problem Reboot system If problem continues replace CPU b...

Page 121: ...eplace CPU board 1004E Minimum system shutdown display RAM failure Reboot system If problem continues replace CPU board 1004F Minimum system shutdown software watchdog failure Reboot system If problem continues replace CPU board 10050 Minimum system shutdown sequential watchdog failure Reboot system If problem continues replace CPU board 10051 Minimum system shutdown CPU clock too fast Reboot syst...

Page 122: ...em continues replace CPU board 2000E 2000F Software upset Reboot system If problem continues replace CPU board 20010 Software upset Reboot system If problem continues 1 CheckTotalSystemOnTimeontheSystemErrorLogScreen If unusually large upgrade software to Rev 3 5 or greater 2 Replace CPU board 9999900 Bootup RAM failure Reboot system If problem continues replace CPU board 9999901 9999918 CPU upset...

Page 123: ...supply on CPU board at TP7 referenced to ground at TP1 14 25 to 15 75 volts If this voltage is in range replace the CPU board because the problem is in the A D channel If not in range remove the SIB to CPU cable and re test If in range the SIB to CPU cable or SIB may be shorting the 12 V SIB supply and loading the 15 V supply If not in range measure the 15 V supply on Power Supply board at TP21 re...

Page 124: ...t in range replace the power supply board If voltage is in range on the power supply board replace the CPU board For machines with Integrated CPU Replace the CPU board 12 Hour Test User Alarm System in use for more than 12 hours without a power up self test To do the test move the system switch from Standby to On Absorber panel open User Alarm The top panel is not completely closed If persists che...

Page 125: ...al ventilation or manual ventilation with monitoring select the common gas outlet Backup Mode Active User Alarm SIMV PC PSV mode entered No spontaneous breath within set delay time Battery Charger Fail User Alarm The current in the battery charging circuit is too high The system is operational butmayfail later depending on what caused this alarm Replace battery For machines with original CPU PSB F...

Page 126: ...re Refer to Troubleshooting Flowcharts Section 5 5 Calibrate the flow sensors Look for water in the flow sensor tubes Dry if necessary Calibrate O2 Sensor low Sensor connected Offset slope or cell voltage not in range or O2 110 Calibrate the O2 sensor If calibration fails replace the O2 sensor If calibration still fails replace the SIB board Successful calibration of sensor Canister open User Alar...

Page 127: ...n the Alarm limit menu This message tells you that the audio alarm for circuit leaks was turned off Connect O2 Sensor low Digital I O signal indicates a disconnect Is O2 sensor connected If it is replace the O2 cable If problem persists check or replace the SIB to CPU cable If problem persists replace the SIB board If problem persists replace the CPU board Alarm condition becomes false Control Set...

Page 128: ...tegrated CPU If not in range Refer to section 5 6 3 measure the VEL supply on CPU board at TP213 referenced to ground at TP12 10 to 15 23 volts If this voltage is in range replace the CPU board because the problem is in the A D channel If the VEL supply is not in range remove Display to CPU cable and re test If in range replace the display If still not in range replace the CPU Exp Flow Sensor Fail...

Page 129: ...25 2 ohms If not replace the gas inlet valve solenoid Go to Display I O signals screen DPL switch status must be Off If On is indicated remove the bellows assembly If On continues to be displayed replace the SIB Perform Cal bleed resistor from service mode to ensure there is no problem with the bleed resistor Replace the SIB Replace the CPU board Gas Inlet Valve Failure Minimum Monitoring Incorrec...

Page 130: ...SIB to CPU cabling Replace the SIB board Replace the CPU board Alarm condition becomes false or volume alarms state transition to standby or off High VTE medium In range flow data available and alarm limit not off VTE high limit Check ventilator settings and volume output Check the breathing circuit and flow sensor connections Perform flow sensor calibration Replace the flow sensors Check SIB to C...

Page 131: ... SIB cable from SIB to CPU board Limit Task Light Use User Alarm The system is running on battery power No action is required Turn off the light to save power Loss of Backup Audio User Alarm The audio alarm will not sound for a CPU failure Monitor system operation Replace the CPU board Low Battery Voltage User Alarm Voltage is 11 65V while using battery power Manually ventilate the patient to save...

Page 132: ...ion Replace the flow sensors Check SIB to CPU cabling Replace the SIB board Replace the CPU board Alarm condition becomes false or volume alarms state transition to standby or off Manifold Pressure Sensor Failure Minimum Monitoring 8 9 Cal failure at bootup or DPLswitchengagedand Pmanifold 80 cm H2O Check the breathing circuit Perform flow sensor calibration If calibration fails replace the SIB Ch...

Page 133: ... SIB to CPU board No CO2 absorption User Alarm The canisters are open out of the circuit but the bypass mechanism prevents a leak optional feature User setting Close the canister release to remove CO2 from exhaled gas No Exp Flow Sensor medium 1 No expiratory sensor connected Check flow sensor connections for No Flow Sensor alarm Replace expiratory flow sensors Expiratory flow sensor is connected ...

Page 134: ...g circuit Perform flow sensor calibration 10 Check SIB to CPU cabling Replace the SIB board Replace the CPU board Alarm condition becomes false PEEP Not Achieved low In range Paw data available Pmin does not reach within 2 cm H2O of PEEP by end of mechanical expiration for 6 breaths in a row Check settings for not enough expiration time Check the breathing circuit Occlusions Check scavenging Check...

Page 135: ...grated CPU If 12V SIB Supply A D count is not in range remove SIB to CPU cable and recheck the counts If not in range replace the CPU board If 12V SIB Supply A D count is in range replace the SIB to CPU cable or the SIB Pres Control Available 1 X and 3 X low VT Compensation Off is active Check the breathing circuit and flow sensor connections Check the flow sensors for proper connection Perform fl...

Page 136: ...erform all calibrations in service mode Select gas outlet medium Patient breathing detected in ACGO 3 breaths detected in a 30 sec window Check ventilator settings and ACGO switch position User presses the alarm silence switch Service Calibration User Alarm Internal calibrations are necessary for maximum accuracy The system is operational Service Mode Perform all calibrations 4 X Refer to Section ...

Page 137: ...lve in L min Check the breathing circuit for leaks or hose occlusions Perform flow sensor calibration Check the drive gas check valve Check SIB to CPU cabling Replace the SIB board Replace the CPU board Alarm condition becomes false or transition from mechanical ventilation on to off Vaux_ref Out of Range Minimum Shutdown 6 5 8V out of range For machines with original CPU Check the 5 8 Voltage Tes...

Page 138: ... alarm detection off cardiac bypass in progress or ACGO on VT Not Achieved low In range flow data available VTI VT bigger of 0 1 VT or 5 mL for 6 mechanical breaths in a row Check ventilator settings is Plimit set too low for volume setting Check drive gas Check the breathing circuit and flow sensor connections Perform flow sensor calibration Replace the flow sensors Check SIB to CPU cabling Repla...

Page 139: ...istics 9 All messages appear in the user messages window 10 Flow sensors are also used to measure pressures 11 The sustained pressure threshold is calculated from the pressure limit setting When mechanical ventilation is on the sustained limit iscalculatedasfollows forpressurelimits 30cmH2O thesustainedpressurelimitis6cmH2O forPlimitbetween30and60cmH2O the sustained limit is 20 of the pressure lim...

Page 140: ... Connect cable 2 Charge battery 3 Replace battery fuse 4 Replace battery Alarms display but not audible 1 Audio set too low 2 Speaker cable 3 Speaker 4 CPU board 1 Adjust audio from menu 2 Ensure cable is plugged in 3 Replace speaker 4 Replace CPU board Bellows does not expand ortendstocollapseduring ventilation 1 Leak in the breathing circuit 2 Bellows not installed properly 3 Tear or leak in bel...

Page 141: ...oderate valve leakage O Ring Seal Housing to Main Manifold Alignment of seat and seal after assembly Loose mounting screws Exhalation valve assembly 1 Check operation of drive gas check valve 2 Replace drive gas check valve 3 Inspect and reassemble the exhalation valve assembly make sure to put it together correctly Mechanically delivered volumes decrease significantly immediately following use of...

Page 142: ...stem Leak Bellows falls or leak detected ALARMS SYMPTOMS Yes Yes Proceed to Inaccurate Volume Ventilation Troubleshooting Yes Alarms of Type Vt Compensation Off Delivered Volume Mismatch Check Flow Sensors Insp Reverse Flow Exp Reverse Flow System Leak Unable to drive Bellows Inaccurate ventilation Yes No Proceed to No Ventilation Troubleshooting Yes Alarms of Type Low Paw Volume Apnea Low Drive G...

Page 143: ...ble No Disconnect J5 connector from CPU Perform continuity check on System Switch Yes Does the unit have Integrated CPU Disconnect 6 pin cable J200 from CPU to Power Supply Verify 12 5V and 16V power present Yes Replace Power Supply Voltages present No Yes Disconnect 50 pin cable J2 from CPU to Power Supply Verify all voltages present No Replace Power Supply Board Replace CPU Board No Yes Done Was...

Page 144: ...r water plugs between flow sensor and SIB Yes Inspect Breathing Circuit check valves Replace seat and disks as necessary Water leaks or kinks Yes Correct kinks or leaks Replace harness if necessary Switch Insp and Exp pneumatic connections and repeat previous test Problem moves to other sensor channel Replace bulkhead harness Perform All Calibrations and Re evaluate Yes Replace SIB No Perform All ...

Page 145: ...lator Regulator pressure OK at 25 psi Set Flow Valve to 120 L min No Yes High flow gas exhausts from drive gas port Test Flow Valve No Proceed to Breathing System Leak Troubleshooting No Does bellows return to top of canister Yes Check Hospital pressure supply No Hospital pressure OK Verify operation of GIV Check Replace inlet filter if necessary Yes Correct Hospital supply problem No Examine Exha...

Page 146: ...ows pop off valve for accurate assembly or sticking 2 Check exhalation valve for accurate assembly or sticking 3 Check for obstructions in bellows base upstream of exhalation valve 4 Check for obstruction downstream of exhalation valve in connecting tube or Y manifold Scavenging Problem or Breathing Circuit Obstruction 1 Check Hospital s scavenging hoses and supply vacuum active 2 Check filter on ...

Page 147: ...nd 17 18 VAC 1 VAC 2 35Vac AC from toroid 24 45 Vac measured across TP17 and TP18 19 5R5_VAUX 5 5 5 8V 5 6V Supply for inlet valve flow valve and speaker 5 20 VAN15 15V 15V Analog 15V supply 5 21 VAP15 15V 15V Analog 15V supply 5 22 VH_EL 14 5V Supply for EL display 5 23 VDD 5 0V Supply for digital circuit 3 68 3 05 24 VSW 15V Supply for VDD Fail Buzzer 10 25 TP25 20V 20V Intermediate supply stage...

Page 148: ...SS 12VLP 12V Supply for task lights 5 4 VSW 15V Supply for VDD Fail Buzzer 10 5 VH_EL 14 5V Supply for EL display 5 6 VAN15 15V 15V Analog 15V supply 5 7 VAP15 15V 15V Analog 15V supply 5 8 5R5_VAUX 5 5 5 8V 5 6V Supply for inlet valve flow valve and speaker 5 9 SIB_12V 12V Analog 12V 5 supply to SIB AB 29 098 LS1 J2 J5 J6 J8 U14 U23 TP9 TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 J1 J3 J4 ...

Page 149: ...plied by the battery TP Name Typical Value Description 1 15V 15V Analog 15V supply 2 15V 15V Analog 15V supply 200 VCHGR 16V From power supply 201 PGND 0V Power chassis ground 202 VMAIN 12 5V From power supply 207 AGND 0V Analog ground 209 5 8V 5 8V Supply for inlet valve flow valve speaker 213 VH_EL 14 5V Supply for EL display 214 12VLP 12V Supply for light package J200 TP200 TP202 TP2 TP1 TP207 ...

Page 150: ...Notes 5 34 05 04 1006 0453 000 ...

Page 151: ...ply to the ventilator portion of the Aestiva Anesthesia Machine 6 1 Supply gas inlet filter 6 3 6 2 Free breathing valve maintenance 6 4 6 3 MOPV differential relief valve test 6 5 6 4 MOPV pressure relief valve test 6 6 Note For maintenance intervals see Section 5 of the Aestiva Anesthesia Machine Service Manual ...

Page 152: ... perform testing or maintenance on this instrument while it is being used to ventilate a patient Possible injury can result w WARNING Items can be contaminated due to infectious patients Wear sterile rubber gloves Contamination can spread to you and others ...

Page 153: ... cap Replace if cracked or torn 5 Reinstall the filter and the filter cap 6 Perform the Preoperative Checkout Procedure in the Aestiva Anesthesia System Operation Manual w CAUTION Cross threading the filter bowl can cause debris to accumulate on the filter resulting in shorter useful life of the filter w CAUTION Once you start the threads on the filter body with the O ring mounted to thebody donot...

Page 154: ...ess 4 Pullthetailofthenewfreebreathingvalveflapperthroughthecenterofthe valve seat until it locks in place 5 Trim the tail in line with the bottom of the valve seat 6 Replace the O ring Lubricate with a thin film of KRYTOX 7 Back the seat threads counter clockwise until you feel the thread engage Hand screw the assembly into the manifold 8 Perform the Preoperative Checkout Procedure in the Aestiva...

Page 155: ...ent circuit to the breathing system 4 Occlude the patient port 5 Remove the rear cover from the breathing system 6 Remove the scavenging assembly and plug the scavenging port with a test plug 7 Push the flush button to fill the bellows The inspiratory pressure gauge should not exceed 60 cm H2O with the flush button pushed will typically be 50 55 cm H2O 8 Release the flush button Within 4 seconds t...

Page 156: ...ve ports The drive gas port which is the one offset from center has to be plugged below the take off port for the drive pressure limit switch 1 Usingthestandpipetubefromtheexhalationvalve andwiththeu cupseal side of the tube up push the standpipe tube down the silicone drive gas port until it is approximately 1 2 inch 15mm from the blue seal Pushing the standpipe tube all the way down to the seal ...

Page 157: ...ing on the service screen The MOPV valve is functioning correctly if the steady state pressure reading is 120cm H2O 8 Set the system switch to Standby 9 Remove the test plug from the exhalation valve port 10 Remove the standpipe from the port and reinstall in the exhalation valve 11 Reassemble the breathing system 12 Perform the Preoperative Checkout Procedure in the Aestiva Operation Manual ...

Page 158: ...Notes 6 8 05 04 1006 0453 000 ...

Page 159: ... 18 7 10 Mechanical Overpressure Valve MOPV assembly 7 20 7 10 1 To service the original MOPV assembly 7 20 7 10 2 To service the MOPV assembly with the molded housing 7 22 7 11 Drive gas check valve assembly 7 23 w WARNING Post Service Checkout is required after you complete this section You must perform Section 3 Post Service Checkout after performing any maintenance service or repair Failure to...

Page 160: ...uipped and connects to the rear of the control panel For the Aestiva 5 MRI machine the display is centrally mounted above the flowhead Figure 7 1 Ventilator control panel To remove the control panel assembly 1 Remove the screws from the connector cover and slide the cover back 2 Disconnect the 50 pin connector cable 3 Remove the screws that attach the control panel to the mounting brackets 4 Remov...

Page 161: ...lies disconnect the 50 pin ribbon cable from connector J2 of the keyboard 5 Remove the 20 pin ribbon cable from its connector on the EL display 6 Remove the four M3 Keps nuts from mounting studs on keyboard and remove the EL display 7 Remove the seven M4 Keps nuts from keyboard studs and remove keyboard from the front housing 8 To replace the encoder switch see Section 7 3 9 When you replace the k...

Page 162: ...e back of the keyboard panel 4 Remove the mounting nut and flat washer using a 14 mm wrench 5 Gently pull the encoder switch from the keyboard panel 6 Place a lock washer on the shaft of the new encoder switch 7 Align the shaft of the new encoder switch with the hole in the front panel circuit board push it through and place a flat washer on the encoder shaft 8 Replace the mounting nut using a 14 ...

Page 163: ...ss the speaker follow the disassembly instructions in Section 7 2 2 Remove the two screws holding the alarm speaker to the housing 3 Install the new alarm speaker using the previously removed screws 4 Assemble in reverse order 5 Perform the Checkout Procedure found in Section 3 of the Aestiva Anesthesia Machine Service Manual ...

Page 164: ...ti static workstation and wear a wrist grounding strap when handling a circuit board To remove the CPU board 1 Disconnect the power cord from the outlet receptacle 2 Remove the AC inlet module from the rear of the Aestiva Anesthesia Machine Loosen the two captive M4 screws Pulling on the two captive screws cautiously slide the AC inlet module outonlyhalfwayfromtheenclosure Usethetwosidehandles cut...

Page 165: ...Battery 2 CPU board 3 Power supply board 4 Isolation transformer toroid Figure 7 6 Electrical enclosure components original CPU 1 Battery 2 Integrated CPU board 3 Power supply Figure 7 7 Electrical enclosure components integrated CPU 1 2 3 4 3 2 1 ...

Page 166: ...ribbon cables one cable for Integrated CPU near the top of the board The cable s go to the DB 9 and DB 15 connectors on the back of the machine 5 For the original CPU disconnect the power supply ribbon cable at the CPU board For the Integrated CPU disconnect the power supply cable at the top of the CPU board and if applicable the task light harness connector 6 Remove the three hex nuts holding the...

Page 167: ...cket 16 Install the new EEPROMs noting the label to ensure the correct chip is placed in the correct socket Align the EEPROM notch with the socket notch and press the chip down firmly CPU board tests Whenever you replace the CPU board and or the EEPROMs U14 and U23 or perform the software upgrade perform the following tests Select the altitude Section 4 Select the drive gas Section 4 Cal O2 Sensor...

Page 168: ...upply board by pulling out on the lock tabs on either side of the connector and gently pulling on the cable connector 4 Disconnect the lighting cable by gently pulling on the connector 5 Disconnecttheconnectorfromthetoroidbypressingthelocktabsoneither side and gently pulling on the connector 6 Loosen the three captive screws at each corner of the power supply board 7 Unlock the two Nylon retainers...

Page 169: ...sconnect the line power inlet connector and the ground wire at the bottom edge of the power supply 3 Disconnect the power outlet connector at the top edge of the power supply 4 Removethetwonutsthatholdthepowersupplyassemblytothebackplate of the electrical enclosure 5 Transfer the power supply mounting bracket to the new power supply 6 To install a new power supply follow the removal instructions i...

Page 170: ...er to section 7 5 2 Disconnect the battery cable from the power supply board by pressing the lock tabs on either side of the connector and gently pulling on the connector 3 Disconnect the grounding lug using a 7 mm socket wrench 4 Remove the two mounting nuts using a 7 mm socket wrench 5 Remove the toroid 6 Install a new toroid by following these instructions in reverse order and reconnecting like...

Page 171: ... 1 Remove the AC inlet module and the electrical enclosure cover Refer to section 7 5 2 Disconnect the battery cable by pressing the lock tabs on either side of the connector and gently pulling on the connector 3 Remove the battery For original CPU machines the battery is held in place with a metal strap and the foam insert Slide the battery to the right until it clears the strap and remove it For...

Page 172: ...ther components The pneumatic subassemblies are Gas inlet valve GIV Flow control valve Inlet filter Mechanical over pressure valve MOPV Non relieving pressure regulator Free breathing valve Drive gas check valve 1 Twin tube assembly 2 Gas Inlet Valve GIV 3 Lifter hex screw 4 Gas supply line 5 Drive gas check valve 6 Flow control valve 7 Mechanical overpressure relief valve MOPV original style show...

Page 173: ...tic assembly to slide into place 5 Turn the lifter hex screw on the GIV to lower the double tube assembly clear of the exhalation valve interface cuff 6 Slide the Vent Engine out of the breathing system frame and place on a work surface Note Newer Vent Engines include a spring on the inside tube to keep the tube assembly engaged with the interface cuff Refer to section 8 7 6 Push down on the tube ...

Page 174: ...llips head screws 4 that hold the regulator together Use a 3 mm hex wrench to loosen the two captive mounting screws 3 Lift the regulator from the Vent Engine manifold 4 Inspect seat and O rings for damage Replace as necessary before replacing the regulator 5 Replace the regulator by following these instructions in reverse order 6 Perform the regulator calibration procedure in Section 4 7 Installt...

Page 175: ...Use a 3 mm hex wrench to loosen the two captive mounting screws and lift out the flow control valve 3 Examine the seat and two O rings for damage Replace as necessary 4 Reinstall the flow control valve by following these instructions in reverse order 5 Perform the flow valve test in Section 4 6 Install the pneumatic assembly by following the steps in Section 7 6 in reverse order 7 Perform the Chec...

Page 176: ...ve To replace the gas inlet valve 1 Remove the tube guide plate from the top of the GIV 2 Remove the inlet filter underneath the manifold plate 3 Use a 3 mm hex wrench to loosen the two captive inlet valve mounting screws 4 Remove the GIV inlet filter housing assembly 5 To separate the GIV from the inlet filter housing remove the two mounting screws from within the filter housing 6 Examine the val...

Page 177: ... shuttle Cover the shuttle with a soft cloth and apply pressure connect the drive gas hose or use pipeline pressure through the drive gas inlet 4 Reinstall the shuttle and upper U cup seal 5 Reinstall and lubricate upper O ring lightly with KRYTOX 6 Reinstall inlet valve cap 7 Install the retaining ring flat side out away from the valve 8 Reassemble in reverse order 9 Perform the Checkout Procedur...

Page 178: ...at was used with the original housing is no longer required with the molded housing 7 10 1 To service the original MOPV assembly Note Refer to Figure 7 19 for the following steps 1 Remove the two cover screws and cover 2 Remove the over pressure weight and seal assembly 3 Replace the seal of the over pressure weight 4 Remove the two screws holding the MOPV housing to the manifold plate and remove ...

Page 179: ...ove the alignment tool 13 Replace the over pressure weight and diaphram assembly 14 Replace the cover and screws 15 Install the Vent Engine by following the steps in Section 7 6 in reverse order 16 Perform the Checkout Procedure found in Section 3 of the Aestiva Anesthesia Machine Service Manual 1 Cover Screws 2 Cover 3 Over pressure weight 4 Seal over pressure 5 Housing 6 Differential pressure we...

Page 180: ...the molded housing over the weights so that the locating tabs are within the recess of the manifold plate and that it lies flat against the manifold plate Important Ensure that the diaphragm item 6 is not pinched by the housing 9 Start both housing mounting screws in the threaded holes 10 Ensure that the locating tabs are still positioned in the recess of the manifold plate and that the diaphragm ...

Page 181: ...ow the instructions in Section 7 6 to remove the Vent Engine 2 Use a 3 mm hex wrench to loosen the drive gas check valve captive mounting screws 3 Lift out the valve assembly 4 Inspect the O ring and valve seat for damage Replace as necessary 5 Reinstall the valve by aligning the check valve pin into the alignment hole 6 Tighten the captive screws 7 Install the Vent Engine by following the steps i...

Page 182: ...Notes 7 24 05 04 1006 0453 000 ...

Page 183: ...tilator Harnesses 8 3 8 4 Electrical enclosure parts original CPU 8 4 8 5 Electrical enclosure parts integrated CPU 8 6 8 6 Display Module 8 8 8 6 1 Rear housing parts 8 8 8 6 2 Front housing parts 8 9 8 7 Aestiva 7900 Vent Engine 8 10 8 7 1 Gas Inlet Valve 8 11 8 7 2 Mechanical Over Pressure Valve MOVP 8 12 8 7 3 Inlet filter 8 13 8 7 4 Free Breathing Valve 8 14 8 7 5 Manifold 8 15 8 7 6 Tube Ass...

Page 184: ...eplace fittings position the barb end in the same direction as the original fitting to make hose connections easier 8 2 Service tools Tool Stock Number Software Update Kit Using PC Aestiva does not include ventilator software 1006 8376 000 Cable PC Software Update Aestiva included in update kit 1006 8376 000 1006 3900 000 Software Media 3 5 disk Aestiva Call Technical Support Power Jumper Cable pr...

Page 185: ...olding mount Cover slotted display connector Washer rectangular Screw M3x6 SST Lockwasher M3 1006 8056 000 1006 1326 000 1006 4287 000 9211 0430 063 9213 0430 003 2 Harness CPU Board to System Switch and O2 Flush Switch 1006 3707 000 3 Harness CPU Board to Sensor Interface Board SIB 1006 3700 000 4 Harness CPU Board to Pneumatic Connection Board Vent Engine 1006 3706 000 ...

Page 186: ...e without EPROMS 1006 8389 000 13 EPROM Kit U14 and U23 Aestiva Call Technical Support 14 Gasket O2 seal for CPU board mounts under CPU bracket 1006 5117 000 15 Ribbon cable DB9 to CPU 1006 3702 000 16 Ribbon cable DB25 to CPU 1006 3703 000 17 Harness vent CPU to power supply 1006 3705 000 18 Harness from AC input to toroid includes connector also goes to Tec 6 outlet 1006 3795 000 19 Harness to l...

Page 187: ...8 Illustrated Parts 1006 0453 000 05 04 8 5 U14 U23 3 2 1a 1 5 4 6 7 8 9 10 11 12 13 14 6 7 15 16 15 16 17 18 19 20 21 22 23 24 5 ...

Page 188: ...under CPU bracket 1006 5117 000 15 Ribbon cable Serial Serial Download CPU to DB9 and DB25 1006 4260 000 16 Standoff 4 40 DSUB 1202 3092 000 17 Harness power supply to CPU 1006 4261 000 18 Harness from AC input to power supply also goes to Tec 6 outlet 1006 4259 000 19 Harness from J201 of CPU to light strip 1006 3802 000 20 Cover electrical enclosure 1006 4299 000 21 Bushing snap in cable grommet...

Page 189: ...8 Illustrated Parts 1006 0453 000 05 04 8 7 U14 U23 4 12 13 14 15 16 15 18 21 20 23 24 1 1a 22 17 19 ...

Page 190: ...r 1 Speaker assembly with leads 1503 3106 000 2 Connector board 1006 3682 000 3 Harness connector board to front panel board 50 pin 1503 3052 000 12 Rear housing vent control display 1006 1242 000 13 Bracket connector board mount 1006 1322 000 14 Screw 2 56 x 5 16 PAN PH HD SST rear panel DB connector 2 0140 6110 105 15 Screw M3 x 8 Sems 11 0140 6219 130 1 2 3 13 14 15 15 15 15 12 ...

Page 191: ...ferrite 20 pin 1605 3072 000 5 Knob soft touch teal green 1006 4622 000 6 Rotary encoder with cable and mounting hardware 1503 3012 000 7 Keyboard front panel vent control display 1006 1325 000 8 EL display 1503 8010 000 9 Front housing vent control display 1006 1241 000 10 Nut Keps M4 keyboard display mount 7 0144 3717 314 11 Nut Keps M3 display mount 4 0144 3717 302 AB 29 072 3 4 5 6 7 8 9 10 11...

Page 192: ...housing assembly complete with elbow Refer to section 8 7 1 6 Drive gas check valve O ring under drive gas check 1503 3006 000 1503 3213 000 7 Flow control valve HSC BCG O ring under flow control valve 2 each 1503 3218 000 1503 3056 000 8 Mechanical Over Pressure Valve MOPV original style shown Refer to section 8 7 2 9 Regulator 172 KPA BCG 1504 3623 000 Not Shown Hardware for securing Vent Engine...

Page 193: ... valve 1503 5006 000 6 O ring upper Viton 9221 3032 116 7 U cup upper EDPM fits on shuttle valve 1503 3090 000 8 U cup lower Viton fits on shuttle valve 1503 3089 000 9 O ring lower Viton 1503 3108 000 10 Filter housing assembly complete with elbow 1503 8113 000 11 Elbow 8mm tube 1006 3535 000 Not shown O rings on bottom of assembly 2 1503 3056 000 Screw M4x20 filter housing to inlet valve 2 0144 ...

Page 194: ... HD CAP 2 1503 8124 000 1102 3006 000 7 Weight mechanical overpressure valve 1503 5015 000 8 Seal mechanical overpressure valve 1503 3016 000 9 Weight MOPV differential 1503 5014 000 10 Diaphragm MOPV 1503 3025 000 11 O ring under MOPV assembly 1503 3056 000 MOPV Elastomers Service Kit 1503 8017 000 includes items 8 through 11 and an alignment tool item 3 The alignment tool must be used when repla...

Page 195: ...d Parts 1006 0453 000 05 04 8 13 8 7 3 Inlet filter Item Description Stock Number 1 Filter glass media TFL binder 1503 3211 000 2 O ring for cap filter housing 1503 3224 000 3 Cap filter housing 1503 3203 000 3 2 1 ...

Page 196: ...8 Illustrated Parts 8 14 05 04 1006 0453 000 8 7 4 Free Breathing Valve Item Description Stock Number 1 Seat free breathing valve 1503 3204 000 2 Valve flapper 0211 1454 100 3 O ring 1503 3208 000 3 1 2 ...

Page 197: ...ng manifold vent 1503 3201 000 2 Elbow 6 35 mm 1 4 inch Straight fitting 6 35 mm 1 4 inch Plug 6 35 mm 1 4 inch 1006 3529 000 1504 3621 000 1503 3245 000 3 Plate manifold vent 1503 8110 000 4 Manifold gasket 1503 3205 000 5 Screw M4x8 mm 8 9211 0640 083 Now shipping with straight fitting 1 2 3 4 5 ...

Page 198: ...collar assembly Spring included with tube assembly 1503 3215 000 1503 3842 000 2 Bushing o ring retainer 2 1503 3217 000 3 O ring 2 1503 3240 000 Current tube assemblies include a spring on the inside tube to help keep the tube assembly engaged with the exhalation valve interface cuff when in place 1 2 3 1 ...

Page 199: ...strated Parts 1006 0453 000 05 04 8 17 8 7 7 Twin Tube Lifter Item Description Stack Number 1 Arm tube positioner 1503 3225 000 2 Washer brass 0202 4528 300 3 Screw 9211 0660 504 4 Screw 1102 3006 000 1 2 3 4 ...

Page 200: ...ecify 150 mm each 0994 6370 010 4 Coupling inline BLK insert half 4 mm hose barb 1503 3237 000 5 Coupling inline WHT insert half 4 mm hose barb 1503 3236 000 6 Shield cuff protector 1503 3214 000 7 Screw M4x8 1006 3178 000 8 Pneumatic connector board 1006 3055 000 9 Locking post kit DSub connector 1503 3822 000 10 Bracket vent engine housing 1503 3206 000 11 Screw SEMS M6 x 16 0144 2436 109 Cuff i...

Page 201: ...nsor Interface Board SIB Item Description Stock Number 1 SIB assembly 1503 7010 000 1a Coupling inline black 1503 3128 000 1b Coupling inline white 1503 3119 000 1c Coupling inline yellow 1503 3132 000 1d Coupling inline blue 1503 3130 000 1b 1c 1d 1 1a ...

Page 202: ...Notes 8 20 05 04 1006 0453 000 ...

Page 203: ......

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