Craftsman 919.167242 owner manual Troubleshooting

TROUBLESHOOTING

Risk of Unsafe Operation. Unit cycles automatically when power is on. When servicing, you may be exposed to

voltage sources, compressed air, or moving parts. Before servicing unit unplug or disconnect electrical supply to the air compressor, bleed tank of pressure, and allow the air compressor to cool.

PROBLEM	CAUSE		CORRECTION
Excessive tank	Pressure switch does not	Move On/Auto/Off lever to
pressure - safety	shut off motor when	the "OFF" position, if the
valve pops off.	compressor reaches "cut-	outfit does not shut off
	out" pressure.	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 in air	Defective air tank.	Air tank must be replaced.
tank or at air		Do not repair the leak.
tank welds.				Risk of
				Bursting.
		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.
Air leak from	Possible defect in safety	Operate safety valve
safety valve.	valve.	manually by pulling on ring.
		If valve still leaks, it should
		be replaced.
Knocking Noise.	Possible defect in safety	Operate safety valve
	valve.	manually by pulling on ring.
		If valve still leaks, it should
		be replaced.

19- ENG A08598