Porter-Cable A16759 instruction 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	Pressure switch does		Move On/Auto/Off lever to
	tank pressure	not shut off motor when		the "OFF" position, if the
	- safety valve	compressor reaches "cut-		outfit does
	pops off.	out" pressure.		not shut off contact a Trained
				Service Technician.
		Pressure switch "cut-out"		Contact a Trained Service
		too high.		Technician.
	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.
	(if equipped)
	Air leaks in air	Defective air tank.		Air tank must be replaced.
	tank or at air				Do not
	tank welds.				repair
				the leak. 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.

A16759 22- ENG