Trouble Shooting, Section 9 - Gardner Denver EDF-KB Operating And Service Manual

SECTION 9
TROUBLE SHOOTING
SYMPTOM
Compressor fails to start.
Compressor starts but
stops after a short time.
Compressor does not
unload (or load).
Compressor cycles from
load to unload excessively.
POSSIBLE CAUSE
1. Wrong lead connections.
2. Blown fuses in control
box.
3. Motor starter overload
heaters tripped.
4. Pressure in reservoir.
5. Read error message on
control panel. See Section 4.
1. High discharge temperature.
2. High discharge
temperature switch
malfunction.
3. Blown fuse in starter/
control box.
4. Motor starter overload
heaters trip.
1. Improperly adjusted
control.
2. Air leak in control
lines.
3. Restricted control line.
4. Subtractive pilot or blow–
down valve malfunction.
1. Insufficient receiver capacity.
2. Restriction in control tubing.
3. Subtractive pilot setting
too high.
13–8–606 Page 44
REMEDY
1. Change leads.
2. Replace fuse.
3. Reset and investigate
cause of overload.
4. Inspect blowdown valve.
5. Replace switch.
1. See "High Discharge
Air Temperature," this
section, page 45.
2. Replace switch.
3. Replace fuse
(investigate if fuses
continue to blow).
4. Reset and investigate
cause of overload.
1. Refer to Section 4, page
21, and adjust control.
2. Determine source of
leak and correct.
3. Clean control lines.
4. Repair, clean or replace
valve.
1. Increase receiver size.
2. Inspect and clean control
tubing.
3. Adjust the valve. See
Section 4, page 24.