Powermate IV7518075 - Manual (Page 12)

12 - ENG 200-2909
Note: Troubleshooting problems may have similar causes and solutions.
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Excessive current draw
trips circuit breaker or
motor reset switch
Low voltage/motor overload Check that power supply is adequate and that compressor is on a
dedicated circuit.
Drive belt tension too tight Readjust belt tension.
Restricted air passages Inspect and replace transfer tubes or the check valve, (see “To replace
or clean check valve” in the maintenance section).
Compressor stalls Low voltage to motor Furnish adequate power.
Bad check valve Replace the check valve (see “To replace or clean check valve” in the
maintenance section).
Seized pump Contact a qualified service center.
Low discharge pressure Air leaks Tighten or replace leaking fittings or connections. Do not overtighten.
Leaking valves Contact a qualified service center.
Restricted air intake Clean or replace air filter element(s).
Blown gaskets Contact a qualified service center.
Worn piston rings or cylinder Contact a qualified service center.
Compressor pump
knocking
Loose motor pulley or pump
flywheel
Retighten pulley and flywheel. Check alignment.
Low oil level in pump crankcase Keep oil at proper level at all times.
Excess carbon on valves or top
of piston
Contact a qualified service center.
Oil in discharge air Worn piston rings or cylinder Contact a qualified service center.
Restricted air intake Clean or replace the air filter element(s).
Oil level too high Reduce to proper level.
Overheating Poor ventilation Relocate compressor to an area with cool, dry, well circulated air, at
least 12 in. from nearest wall.
Dirty cooling surfaces Clean all cooling surfaces thoroughly.
Restricted air passages Inspect and replace transfer tubes or the check valve, (see “To replace
or clean check valve” in the maintenance section).
Excessive belt wear Pulley out of alignment Realign pulley with compressor flywheel.
Improper belt tension Readjust.
Pulley wobbles Replace the pulley and check for a damaged crankshaft or flywheel.
Compressor won’t start in
cold temperatures
Too much back pressure in tank Open petcock when starting motor.
40W oil in crankcase
Use synthetic blend, non-detergent air compressor oil.
Compressor too cold Move compressor to a warmer location.
Air leaking through
bleeder valve after
compressor shuts off
Dirty or defective check valve. Replace or clean the check valve (see “To replace or clean check
valve” in the maintenance section).