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IV.
Troubleshooting
Low concentration, 70% to.85% O,, yellow alarm
OCSI Model).
PROBABLE CAUSE
REMEDY
Output flow set above 6 ipm.
Adjust flow to a lower setting.
Small compressed
air leak that does not cause
low
pressure
alarm
but
does
cause
low
concentration. This will occur only at oxygen flows
of 4 Ipm or higher.
Repair any leaks between. compressor and ATF
module.
Slightly
low
compressor
output
due
to clogged
filters
or
minor
valve
or
seal
problems
with
compressor.
Behavior
is similar to small
leaks
that do not cause low pressure alarm.
Repair or replace components.
ATF module is damaged or has been exposed to
contamination.
Check
for
high
compressor
discharge pressure to confirm problem.
Replace ATF module.
Leak in oxygen circuit between ATF module and
flowmeter.
Repair leak.
Concentration above 85% O,, yellow alarm (OCSI
Model).
PROBABLE CAUSE
REMEDY
OCSI out of calibration.
Recalibrate or replace.
Audible alarm activated, Concentrator is running, red alarm light is on.
PROBABLE CAUSE
REMEDY
Compressor
is
worn
or
failed
causing
low | Repair or replace compressor.
pressure.
Low
pressure
sensor
has
activated
alarm.
A leak exists in the compressed air lines causing
the low pressure alarm to activate.
Repair or replace leaking components.
Faulty pressure switch.
Replace.
Flow rate is set in excess of 7 LPM resulting in the
low pressure sensor activating.
Adjust flow rate to prescribed setting,
Relief valve audio alarm activated, concentrator running, no alarm indications.
PROBABLE CAUSE
REMEDY
ATF modute drive motor has failed, causing high
pressure to vent relief valve.
Check for faulty component and repair or replace
as required.
Fauity relief valve.
Replace.
Low concentration, below 70% O2, red alarm (OCSI model).
PROBABLE CAUSE
REMEDY
Output flow set well above 6 LPM.
Adjust flow to a lower setting.
Compressed air leak.
Repair or replace components.
Low compressor output.
Repair or replace.
Clogged filters.
Replace.
Faulty ATF module.
Replace.
Leak in oxygen circuit.
Repair.
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