Datex-Ohmeda Aestiva 7900 SmartVent, Technical Reference Manual

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5 Troubleshooting
5-30 05/04 1006-0453-000
5.5.5 High intrinsic PEEP troubleshooting
Start
Calibrate Flow
Sensors
Verify pass?
Proceed to
"Inaccurate Volume Ventilation"
Troubleshooting
No
Yes
Problem
continues?
Transducer was out of
calibration
No
Yes
Intrinsic PEEP
in both Bag and
Vent modes?
Intrinsic PEEP in
Vent mode only?
APL Valve Problem
1. Check APL valve mechanism
for proper function.
2. Check APL disk for sticking.
3. Check for obstructions in main
manifold downstream of APL or
in "Y" manifold.
Problem
continues?
Exhalation/Pop-off Valve Problem
1. Check bellows 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 active systems.
3. Check for obstruction in breathing
circuit down tube or "Y" manifold.
4. Check breathing circuit for
incorrect assembly or obstructions.
Yes
Yes
Flow from bleed
orifice with
Bag/Vent
switch in Bag
mode?
No
Verify Regulator Calibration
Problem was improper
regulator setting
Yes
Yes
Replace
Flow Control Valve
No Yes
No
No
AB.29.094
Section 4
Section 4