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13-21-615 v01 Page 81
SYMPTOM
POSSIBLE CAUSE
REMEDY
Oil carryover
1.
Overfilling the reservoir.
1.
Drain excess oil from
system.
2.
Clogged, broken or loose
oil return lines.
3.
Ruptured oil separator
element.
2.
Tighten or replace faulty
lines.
3.
Replace element.
4.
Loose assembly.
4.
Tighten all fittings and
gaskets.
5.
Foam caused by use of
incorrect oil.
6.
Inoperative minimum
pressure valve.
7.
Operation at elevated
discharge temperatures.
8.
Scavenge line check valve
failure.
5.
Use Gardner Denver
AEON lubricating
coolants.
6.
Replace seals in valve.
7.
Reduce temperature. See
“High Discharge Air
Temperature”, this
section.
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.
NOTICE
Gardner Denver factory remanufactured replacement compressor airend units
are available from your authorized distributor, on an exchange basis, for all
rotary screw compressor units.