Gardner Denver ELECTRA-SCREW EBE DH-15 HP, Operating And Service Manual

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13–8–609 Page 38
SYMPTOM POSSIBLE CAUSE REMEDY
Compressor is low on 3. Subtractive pilot or unload 3. Adjust the valve or unload
delivery and pressure. (Cont’d) pressure adjusted too low. pressure. See page 22.
4. Minimum pressure valve 4. Replace valve.
stuck closed.
High discharge air 1. Thermostatic mixing 1. Repair or replace valve.
temperature. valve stuck open.
2. Dirty or clogged cooler face. 2. Clean cooler.
3. Insufficient cooling 3. Provide unrestricted supply
air flow. of cooling air.
4. Clogged oil filter or 4. Replace filter or clean
cooler (interior). cooler.
5. Low compressor oil. 5. Add oil to proper level.
Excessive Oil Consumption 1. Oil carryover through lines. 1. See “Oil Carryover”, in this
section.
2. Oil leaks at all fittings 2. Tighten or replace fittings
and gaskets. or gasket.
Oil Carry–Over 1. Overfilling the reservoir. 1. Drain excess oil from
system.
Air/oil under pressure will cause severe personal injury or death. Shut down com-
pressor, relieve system of all pressure, disconnect, tag and lockout power supply
to the starter before removing valves, caps, plugs, fittings, bolts, and filters.
Compressor, air/oil reservoir, separation chamber and all piping and tubing may
be at high temperature during and after operation.
2. Clogged, broken or loose 2. Tighten or replace faulty
oil return lines lines.
3. Ruptured oil separator 3. Replace element.
element.
4. Loose assembly. 4. Tighten all fittings and
gaskets.
5. Foam caused by use of 5. Use Gardner Denver
R
incorrect oil. AEON
t
4000 or 9000 SP
Lubricating Coolant.
6. Inoperative minimum 6. Replace valve.
pressure valve.