Altec AIR CO2-PG14 CO2-Free Gas Generator Operations and Maintenance Manual
Page 7
P012548-14 - Rev D
SECTION 8 TROUBLESHOOTING GUIDE
A
PROBLEM: UNIT DELIVERS HIGH CO
2
/ WET AIR
POSSIBLE CAUSE
CHECK
CORRECTIVE ACTION
A1
No power to unit.
Power supply.
Correct power problem.
A2
High inlet air temperature.
For standard units, inlet air temperature
should not exceed 100°F.
Reduce inlet air temperature to proper
level. An aftercooler may need to be
installed after compressor.
A3
Air flow through unit in
excess of rated capacity.
Make sure outlet flow (total outlet flow
used by applications) does not exceed
rated outlet flow.
Reduce air usage downstream.
A4
Dirty or obstructed inlet air
filter.
Check inlet coalescing filter element.
Replace inlet filter element.
A5
Purge orifice plugged.
Check purge air flow with flowmeter.
Replace purge orifice.
A6
Solenoid coil burned out.
Check coil leads with ohmmeter. Open
(burned out) coil will have no reading.
Replace solenoid valve.
A7
Oil contamination of
desiccant beds.
Verify particle/coalescing inlet filtration is
adequate and functioning properly.
Towers must be replaced if contamination
is suspected. Send unit to factory for
repair.
A8
Timer not operating properly.
Verify correct timing cycle by listening to
purge or by using voltmeter across coil
connections on timer.
Replace timer.
A9
Purge flow restricted.
Check muffler for excessive back-
pressure.
Replace muffler.
