GE Datex-Ohmeda Aisys Carestation Reference Manual page 215

High Intrinsic PEEP Troubleshooting
Start
Zero Flow
Sensors and
replace both flow
sensors
Proceed to "Inaccurate
Volume Ventilation Troubleshooting"
(Flowchart 8)
Verify Regulator Calibration
(Section 5.3)
Yes
Problem
continues?
Yes
Replace Flow
Control Valve
APL Valve Problem
10
Flowchart
M1046983 04/08
Verify Zero
Pass?
No
Flow from bleed
orifice with Bag/
Vent switch in
Bag mode?
Yes
No
Problem was improper
regulator setting.
No
Check APL Valve
mechanism for proper
function.
Check APL disk for sticking.
Check for obstructions in
breathing circuit
downstream of APL.
Problem
continues?
Yes
No
Yes
Intrinsic PEEP in
both Bag and
Vent Modes?
No
No
Intrinsic PEEP in
Vent Mode only?
Yes
Exhalation/Pop-off Valve Problem
Check Bellows pop-off valve for
accurate assembly or sticking.
Check Exhalation valve for
accurate assembly or sticking.
Check for obstructions in bellows
base upstream of exhalation
valve.
Check for obstruction
downstream of exhalation valve.
7 Troubleshooting
Transducer was out of
calibration.
Yes
Scavenging Problem or Breathing
Circuit Obstruction
Check Hospital's scavenging
hoses and supply vacuum
(active).
Check Filter on active systems
Check for obstruction in the
scavenger down tube.
Check breathing circuit for
incorrect assembly or
obstructions.
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