Troubleshooting Guide

	TROUBLESHOOTING GUIDE

Problem Encountered	Possible Cause	Possible Solution
The compressor does not	Power cord not plugged in.	Plug cord into grounded outlet.
start or restart:	Motor/Pressure switch in	Move switch to AUTO position.
	Motor/Pressure switch in	Move switch to AUTO position.

OFF position

Motor thermal overload switch has tripped.

Turn air compressor off, wait until the motor is cool, then press motor thermal overload (red) button firmly until click is heard.

	Fuse blown or circuit breaker has	Replace fuse or reset circuit breaker.
	tripped.	Check for proper fuse amperage.
		Check for proper fuse amperage.
		Check for low voltage conditions.
		Disconnect any other electrical appliances from circuit or
		operate air compressor on its own branch circuit.

	Wrong gauge wire or length of	Check chart in instruction manual for proper gauge wire
	extension cord.	and cord length.
	Air tank pressure exceeds motor/pressure	Motor will start automatically when air tank pressure drops
	switch "cut-in" pressure.	below "cut-in" pressure of motor/pressure switch.
	Pressure release valve on	Bleed the line by moving the switch to the OFF position.
	motor/pressure switch has not
	unloaded pump head pressure.

	Defective motor, motor capacitor,	Contact Consumer Helpline at 1-800-423-3598.
	motor/pressure switch.
The compressor motor stalls:	Overloaded motor.	Have a certified electrician check the motor and wiring.
		Proceed with his or her recommendations.
	Improper lubrication.	See LUBRICATION section in instruction manual.
	Low oil level.	Check oil level and fill if necessary.
	Defective check valve.	Replace check valve.
Excessively noisy operation:	Loose motor pulley or pump flywheel.	Tighten pulley and/or flywheel (where applicable).
	Lack of oil in the pump crankcase.	Check oil level. If low, check for possible bearing damage.
		Add correct amount of oil.

Carbon deposits on pistons or valves.

Remove cylinder head and inspect. Clean or replace parts as needed.

	Bearing, piston or connecting rod	STOP THE COMPRESSOR! Contact Consumer Helpline at
	failure.	1-800-423-3598.
	Worn connecting rod.	Replace with new connecting rod.
	Worn piston wrist pin bushing.	Remove piston/connecting rod assembly from the compressor
		and inspect for excess wear. Replace worn parts as needed.
	Worn bearings.	Replace worn bearings as needed.
		NOTE: Dirty oil can cause accelerated wear.
		Change oil frequently using recommended oil.

	Noisy check valve.	Replace check valve.
When in the Start/Stop	Motor/Pressure switch does not shut	Move the motor/pressure switch to the OFF position. If the
option, motor runs	off motor when air compressor	motor does not shut off, unplug the air compressor. If the
continuously:	reaches "cut-out" pressure and safety	electrical contacts are welded together, replace the pressure
	relief valve activates.	switch.

	Air compressor is incorrectly sized.	Limit the air pressure to the capacity of the air compressor.
		Either use a smaller tool or a larger air compressor.
Overheating:	Poor ventilation	Relocate the air compressor to an area with an ample supply
		of cool, dry, and well-circulated air is available.
	Dirty cooling fins.	Clean the outer surfaces of the cooling fins on the pump and
		motor assembly.

Air continues to leak at motor/pressure switch release valve after motor stops:

Defective pilot valve, the check valve is Remove, clean or replace. stuck open.