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Note: Troubleshooting problems may have similar causes and solutions.
PROBLEM
Excessive current draw
trips circuit breaker of
motor reset switch
Compressor stalls
Low discharge pressure
Compressor pump
knocking
Oil in discharge air
Overheating
Excessive belt wear
Compressor won't start
in cold temperatures
20
TROUBLESHOOTING CHART
POSSIBLE CAUSE
Low voltage/motor overload
Drive belt too tight
Restricted air passages
Low voltage motor
Bad check valve
Seized pump
Air leaks
Leaking valves
Restricted air intake
Blown gaskets
Worn piston rings or cylinder
Loose engine pulley or
compressor flywheel
Low oil level in pump crankcase
Excess carbon on valves or top
of piston
Worn piston rings or cylinder
Restricted air intake
Oil level too high
Poor ventilation
Dirty cooling surfaces
Restricted air passages
Pulley out of alignment
Improper belt tension
Pulley wobbles
Too much back pressure in tank
40W oil in crankcase
Compressor too cold
SOLUTION
Check that power supply is adequate and that compressor is on
a dedicated circuit. If using extension cord, try using without. If
compressor is connected to a circut protected by a fuse, use dual
element time delay fuses (Buss Fusetron type "T" only).
Readjust belt tension
Inspect and replace transfer tubes or check valve, as required.
Furnish adequate power.
Replace the check valve.
Contact authorized service center.
Tighten or replace leaking fittings or connections. Do not
overtighten.
Contact authorized service center.
Clean or replace air filter element(s).
Contact authorized service center.
Contact authorized service center.
Retighten pulley and flywheel. Check alignment.
Keep oil at proper level at all times.
Contact authorized service center.
Contact authorized service center.
Clean or replace the air filter element(s).
Reduce to proper level.
Relocate compressor to an area with cool, dry, well circulated air,
at least 12 in. from nearest wall.
Clean all cooling surfaces thoroughly.
Replace transfer tubes and/or unloader.
Realign pulley with compressor flywheel.
Readjust.
Replace the pulley and check for a damaged crankshaft or
flywheel.
Open petcock when starting motor.
Use synthetic blend, non-detergent air compressor oil.
Move compressor to a warmer location.
200-2755
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