Wed Jul 18 2018

Will not ventilate when switching from bag to vent mode.

Hello all, I have a 7100 that will not ventilate when switching from bag to vent mode. I have checked the microswitch on the lever and the GUI does show indicate which mode its in. I can here the vent engine actuating but I get no movement from the bellows and no movement of air across the flow sensors, thus I get no waveform on the GUI. I have done all leak tests in service mode and in normal operation mode, with no leaks. I have done all calibrations and diagnostic checks in service mode with no problems. The s/w is 1.3. Any help insight would be much appreciated. Thank you
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Wed Jul 18 2018Reply from Troubleshooter
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Please check Pneumatic connections & Settings for Drive gas.If drive gas is absent due to leak or some other Problem machine will not Ventilate.


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Wed Jul 18 2018Reply from onodayb
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HI Troubleshooter,

Thank you, I did confirm drive gas is set to O2 and I have 52psi at the wall. Also have confirmed pneumatic connections with no leaks present and have torn the breathing assembly apart a few times just to make sure there were no leaks there as well.


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Sun Jul 22 2018Reply from Tamim Jaber
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  1. EXCHANGE THE ABS WITH WORKING MACHINE
  2. DO THE SPANING CAL AND PRESSURE LIMIT SES TESTS
  3. CHECK 25PSI ON DRIVE GAS REG
  4. CHECK /EXCHANGE THE BELLOW ASSY AND CANISTER
  5. IF ALL PASS START TROUBLESHOOTING THE ELECTRONICS
  6. CONTROL BOARD 

GOOD LUCK


Eng. Tamim Jaber
Israel
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Sun Jul 22 2018Reply from tcarver01
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I don't know if your machine has an aux CGO port, but if it does make sure it's closed.

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Sun Jul 22 2018Reply from Tamim Jaber
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Thanks 


Eng. Tamim Jaber
Israel
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Sun Jul 22 2018Reply from Shaji
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Remove the drive gas check valve it gets stuck some times. Reseat it. Did you do a 2 yr pm kit replacement recently?


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Datex Ohmeda - Aestiva/5 7100
by Datex Ohmeda

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