Datex-Ohmeda 7100, Technical Reference Manual

Page: 87 / 158

5 Troubleshooting
1006-0836-000 02/03 5-7
Exp Reverse Flow User Alarm Flow through the expiratory
sensor during inspiration
(for 6 breaths in a row).
Look at the check valves.
Water build up in the flow sensor
tubes?
Is a flow sensor tube cracked or
broken?
Replace the expiratory check
valve.
Check the flow sensor condition.
Flow Valve (DAC)
Failure
Error
Minimum
Monitoring
Ventilator malfunction. Ventilate manually.
Monitoring is still available.
Replace:
• Control Board.
Flow Valve (Voltage)
Failure
Error
Minimum
Monitoring
Ventilator malfunction. Ventilate manually.
Monitoring is still available.
Check/Replace:
• Flow Valve
• Flow Valve harness
• PEB/VEB
• Cable to CB/J14
• Control Board.
Heliox Mode is On User Alarm Control setting on ventilation
setup menu.
When Heliox is used, the
ventilator must adjust volume
calculations.
High O
2
User Alarm O
2
% > alarm high limit
setting.
Is the limit set correctly?
What is the O
2
flow?
Did you just push Flush?
Does the sensor see 21% O
2
in
room air?
Calibrate O
2
sensor.
Replace O
2
sensor.
High Paw User Alarm Paw is greater than Plimit.
The ventilator cycles to
expiration.
Are Plimit and other controls set
correctly?
Look for blockages.
Check patient connection.
High
◊
E
User Alarm The minute volume is greater
than the set high limit.
This alarm is suspended
for 9 breaths after you
change the ventilator
settings.
Check patient for spontaneous
breathing.
Adjust control settings.
High V
TE
User Alarm V
TE
is greater than high alarm
limit. This alarm is
suspended for 9 breaths
after you change the
ventilator settings.
Check patient for spontaneous
breathing.
Check ventilator and alarm
settings.
Insp Flow Sensor Fail User Alarm The system cannot read the
calibration data stored in
the sensor.
Operation continues with
reduced accuracy.
Replace the flow sensor.
Message Alarm/Error Cause User Action/Concerns Service Repair