Craftsman 919.724591 owner manual Troubleshooting

TROUBLESHOOTING

Performing repairs may expose voltage sources, moving parts or compressed air sources, moving parts or

compressed air sources. Personal injury may occur. Prior to attempting any repairs, unplug the air compressor and bleed off all air tank air pressure.

PROBLEM	CAUSE	CORRECTION
Excessive tank	Pressure switch does	Move "On/Auto/Off" lever
pressure - safety	not shut off motor when	to the "OFF" position, if the
valve pops off.	compressor reaches "cut-	unit does not shut off contact
	out" pressure.	a Trained Service Technician.
		Contact a Trained Service
	Pressure switch "cut-out"	Technician.
	too high.
Air leaks at	Tube fittings are not tight	Tighten fittings where air
fittings.	enough.	can be heard escaping.
		Check fittings with soapy
		water solution. Do Not
		Overtighten.
Air leaks at or	Check valve seat damaged.	A defective check valve
inside check		results in a constant air leak
valve.		at the pressure release valve
		when there is pressure in the
		tank and the compressor
		is shut off. Replace check
		valve. Refer the "To Replace
		or Clean Check Valve" in
		the Service and Adjustment
		section.
Air leaks at	Defective pressure switch	Contact a Trained Service
pressure switch	release valve.	Technician.
release valve.
Air leaks in air	Defective air tank.	Air tank must be replaced.
tank or at air		Do not repair the leak.
tank welds.			Do not
			drill into,
		weld or otherwise modify
		air tank or it will weaken.
		The tank can rupture or
		explode.
Air leaks	Leaking seal.	Contact a Trained Service
between head		Technician.
and valve plate.

21- ENG A14841