Porter-Cable C3550 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 tank	Pressure switch does not	Move On/Auto/Off lever to
pressure -	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 can
fittings.	enough.	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 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 D28914