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SECTION 9
TROUBLESHOOTING
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
Compressor runs
unloaded too often
POSSIBLE CAUSE
1.
Wrong lead connections.
2.
Blown fuses in control
box.
3.
Motor starter overload
relay tripped .
4.
Pressure in reservoir.
5.
Emergency stop
depressed.
1.
High discharge
temperature.
2.
High separator/ high
compressor temperature
light on.
3.
Blown fuse in starter/
control box.
4.
Motor starter overload
relay tripped.
1.
Improperly adjusted
control.
2.
Air leak in control lines.
3.
Restricted control line.
4.
Faulty inlet valve solenoid.
1.
Insufficient receiver
capacity.
2.
Restriction in service
piping.
3.
Restriction in control
tubing.
4.
Plugged aftercooler.
1.
Volume of compressed air
system too small.
2.
Pressure range too
narrow.
13-20-600
Page 69
REMEDY
1.
Change leads.
2.
Replace fuse.
3.
Reset and investigate
cause of overload.
4.
Inspect blowdown valve.
5.
Release button.
1.
See "High Discharge Air
Temperature," this
section.
2.
See "High Discharge Air
Temperature", this
section.
3.
Replace fuse (investigate
if fuses continue to blow).
4.
Reset and investigate
cause of overload.
1.
Refer to Control Manual
13-17-600 and adjust
control.
2.
Determine source of leak
and correct.
3.
Clean control lines.
4
Replace solenoid valve.
1.
Increase receiver size.
2.
Inspect and clean service
piping.
3.
Inspect and clean control
tubing.
4.
Inspect and clean
aftercooler.
1.
Check the volume of the
piping and air receivers.
An additional air receiver
may be required.
2.
Extend pressure range.
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