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Datex-Ohmeda ADU
Message
in
Normal
Screen
Select
MAN
or AUTO
mode
Loss of
driving
pressure
C-52
Message in
Error condition /
diagnostic
possible cause
page
Man/mech error
Auto/Man switches are in
wrong position or micro
switches are faulty
flow comparr error
Too low inlet pressure
or pressure regulator set
below 2.7 bar
flow range error
Unit Stays in Self-Test
Insp flow err
Unit Stays in Self-Test
Missing driv pre
Missing driving pressure
Driving pressure < 250
kPa
Recommended
action
Open the Auto/Man.
switch assembly and test
the micro switches.
Replace faulty switches.
Check the pipeline supply
pressure. regulator.
Last flow calibration was
done with too low or
fluctuating pipeline
pressure. Action:
calibrate flow calibration.
Check the pipeline supply
pressure.
Calibrate the ventilator
flow sensor.
Check on Ventilator
Diagnostic page:
Open the Inspiratory
proportional valve full
open. Check that the
inspiration flow is >80 l/
min. If less than 80 l/
min. check can it be a
restriction in the O
or air
2
valve (the one set-up as
drive gas).
Inspiration valve can not
close:
- faulty Inpiration
proportional valve
- last flow calibration
wrong done
Check the drive gas
supply pressure
Document No. 8502855
Err
log
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Table of Contents
Troubleshooting
