13-8-619 Page 41
SYMPTOM
POSSIBLE CAUSE REMEDY
High discharge air
temperature
1. Dirty or clogged cooler
face.
1. Clean cooler.
2. Insufficient cooling air
flow.
2. Provide unrestricted
supply of cooling air.
3. Clogged oil filter or cooler
(interior).
3. Replace filter or clean
cooler.
4. Low compressor oil. 4. Add oil to proper level.
5. Thermostatic mixing valve
stuck open
5. Repair or replace valve.
Excessive Oil
Consumption
1. Oil carryover through
lines.
1. See “Oil Carryover,” in this
section.
2. Oil leaks at all fittings and
gaskets.
2. Tighten or replace fittings
or gasket.
Oil Carryover
1. Overfilling the reservoir. 1. Drain excess oil from
system.
2. Clogged, broken or loose
oil return lines.
2. Tighten or replace faulty
lines.
3. Ruptured oil separator
element.
3. Replace element.
4. Loose assembly. 4. Tighten all fittings and
gaskets.
5. Foam caused by use of
incorrect oil.
5. Use Gardner Denver
AEON 2000, 4000 or
9000 SP lubricating
coolant.
6. Inoperative minimum
pressure valve.
6. Replace seals in valve.
7. Operation at elevated
discharge temperatures.
7. Reduce temperature. See
“High Discharge Air
Temperature”, this
section.
8. Scavenge line check valve
failure.
8. Replace check valve.
9. Water condensate in oil. 9. Check oil reservoir
temperature and if low,
change thermal mixing
valve element to higher
temperature.
DANGER
Air/oil under pressure will cause severe personal injury or death. Shut down
compressor, relieve system of all pressure, disconnect, lockout and tagout
power supply to the starter before removing valves, caps, plugs, fittings, bolts
and filters
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