Compressor Cycles From Load To Unload Excessively; Compressor Is Low On Delivery And Pressure; High Discharge Air Temperature; Excessive Oil Consumption - Gardner Denver Electra-Screw EDEQHF Operating And Service Manual

Symptom Possible Cause Remedy
Compressor cycles from 1. Insufficient receiver capacity.
1. Increase receiver size.
load to unload
excessively.
2. Restriction in control
2. Inspect and clean
tubing.
control tubing.
3,
Subtractive pilot
setting too high.
3. Adjust valve. See Section 4.
Compressor is low on
delivery and pressure.
High discharge
air
temperature.
Excessive Oil Consumption
1. Restricted air filter.
2. Sticking inlet valve,
3. Subtractive pilot
or
uload
pressure adjusted too low.
4.
Minimum pressure valve
stuck closed.
1.
Thermostatic mixing
valve stuck open.
2. Dirty or clogged cooler face.
3.
insufficient cooling
air flow.
4. Clogged oil filter
or cooler (interior).
5. Low Compressor oil.
1.
Oil
carryover through lines.
2. Oil leaks at all fittings
and gaskets.
1. Clean or replace filter.
2. Inspect and clean
inlet valve.
3. Adjust
valve or
unload
pressure. See Section 4,
page 7.
4. Replace valve,
1. Repair or replace valve,
2. Clean cooler.
3. Provide unrestricted
supply of cooling air.
4. Replace filter or
clean cooler.
5. Add
oil to proper
level.
1. See
"Oil Carryover," page 3,
this section.
2. Tighten or replace
fittings or gasket.
13-8-610 Section 9 Page
2