Datex-Ohmeda Anesthesia Delivery Unit S/5 Technical Reference Manual page 376

Datex-Ohmeda ADU
Message
in
Normal
Screen
PEEP High
(AUTO &
MANUAL)
Negative
Pressure
(AUTO &
MANUAL)
Loss of
driving
pressure
O supply
2
pressure
lost
Air supply
pressure
lost
Sigh cycle
Select
MAN or
AUTO
mode
Switch to
MAN mode
Cannot
reach PCV
pressure
C-50
Message in Error condition /
diagnostic possible cause
page
N/A Sustained pressure.
Scavenging system
obstructed or overflow
valve stuck.
N/A Scavenging system
malfunction (leak).
Spontaneous breathing.
Multiple of Neither primary nor
alarms. secondary driving gas
available. Ventilator
inoperable.
O supply When the pressure does
2
pressure low not reach the minimum
pressure limit of 2.5bar.
Air supply When the pressure does
pressure low not reach the minimum
pressure limit of 2.5bar.
N/A Starting sigh cycle.
Man/mech error. The Auto/Man. switch is
in neither position.
N/A System is in Auto mode
after System Checkout.
To prevent the ADU from
starting to ventilate
immediately it is required
that user switches to
Manual mode first.
N/A Pressure limit not
reached during five
consecutive breaths.
Recommended
action
1. Check scavenging
system.
2. Check overflow valve
in bellows block.
3. Check alarm settings
1. Check scavenging
system.
2. Check pressure
sensors.
Check gas supplies to
ADU.
1. Check gas supplies.
2. Check O pressure
2
sensor calibration.
Check gas supplies.
Check air pressure sensor
calibration.
None. Notification to
user.
Check Auto/Man. switch.
Replace Bellows block.
Switch to manual
ventilation.
Check for disconnection
or some other
malfunction that would
cause a major leakage.
Document No. 8502855
Err
log