200-2392
25
PROBLEM POSSIBLE CAUSE SOLUTION
Excessive current draw
Low voltage/motor overload
Check that power supply is adequate and that compressor is on a
trips circuit breaker
dedicated circuit.
Drive belt too tight
Readjust belt tension.
Restricted air passages
Inspect and replace transfer tubes or check valve, as required.
Compressor stalls
Low voltage to motor
Furnish adequate power.
Bad check valve
Replace the check valve.
Seized pump
Contact authorized service center.
Low discharge
Air leaks
Tighten or replace leaking fittings or connections. Do not overtighten.
pressure
Leaking valves
Contact authorized service center.
Restricted air intake
Clean or replace air filter element(s).
Blown gaskets
Contact authorized service center.
Worn piston rings or cylinder
Contact authorized service center.
Compressor pump
Loose motor pulley or pump
Retighten pulley and flywheel. Check alignment.
knocking
flywheel
Low oil level in pump crankcase
Keep oil at proper level at all times.
Excess carbon on valves or top of
Contact authorized service center.
piston
Oil in discharge air
Worn piston rings or cylinder
Contact authorized service center.
Restricted air intake
Clean or replace the air filter element(s).
Oil level too high
Reduce to proper level. Use premium compressor oil.
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.
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
Too much back pressure in tank
Open petcock when starting motor.
in cold temperatures
40W oil in crankcase
Use 10W30 Fully Synthetic Motor Oil.
Compressor too cold
Move compressor to a warmer location.
Note: Troubleshooting problems may have similar causes and solutions.
TROUBLESHOOTING CHART
