Troubleshooting chart – Coleman Air Compressors User Manual
Page 18
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18
Note: Troubleshooting problems may have similar causes and solutions.
Close petcock
Tank petcock is open
Check fittings with soapy water. Tighten or reseal leaking fittings.
DO NOT OVERTIGHTEN.
Fittings Leak
Clean or replace air filter element.
Restricted air intake
Decrease amount of air used.
Prolonged excessive use of air
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Compressor not large enough
Remove and clean or replace.
Restricted check valve
Check and replace if necessary.
Hole in air hose
Immediately replace tank. DO NOT attempt to
repair.
Tank leaks
Replace any faulty seals.
Blown seals
Replace worn parts and reassemble with new seals.
Valve leaks
Replace piston and cylinder sleeve assemblies.
Leaking or worn piston seal
Check fittings with soapy water. Tighten or reseal leaking fittings.
DO NOT OVERTIGHTEN.
Fittings leak
Replace worn parts and reassemble with new seals.
Replace any faulty seals.
Replace regulator or internal parts.
Dirty or damaged regulator
internal parts.
If pressure drops too low, adjust regulator while accessory is used.
This is normal
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Compressor not large enough
Furnish adequate power. If using extension cord, try without.
Low voltage
Consult electrician.
Excessive wire length
Contact authorized service center.
Restricted air passages
Replace check valve, pressure switch bleeder valve.
Back pressure in pump head
SOLUTION
POSSIBLE CAUSE
Low pressure or not
enough air
or
Compressor does not
stop
Excessive starting and
stopping, while not in
use
Air leaks from regulator,
or regulator does not
regulate pressure
Regulated pressure
gauge reading drops
when air accessory is
being used
Circuit breaker trips
(fuse blows) too often
Relocate compressor to an area with cool, dry and well-circulated
air.
Poor ventilation
Clean all cooling surfaces of pump and motor thoroughly.
Dirty cooling surfaces
Replace worn parts and reassemble with new seals.
Leaking valve
Overheating
Furnish adequate power.
Low voltage
Replace pressure switch bleeder valve.
Defective pressure switch
bleeder valve
Motor stalls
PROBLEM
WARNING
:
TROUBLESHOOTING CHART