Craftsman 919.167551 owner manual Troubleshooting, Problem Cause Correction

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	Pressure switch does not	Move Auto/Off lever to the
tank pressure	shut off motor when	"Off" position, if the outfit
- safety valve	compressor reaches	does not shut off contact a
pops off.	"cut-out" pressure.	Trained Service Technician.
	Pressure switch "cut-out"	Contact a Trained Service
	too high.	Technician.
Air leaks at fit-	Tube fittings are not tight	Tighten fittings where air can
tings.	enough.	be heard escaping. Check
		fittings with soapy water solu-
		tion. Do Not Overtighten.
Air leaks at or	Check valve seat damaged.	Replace check valve. Refer to
inside check		the To Replace Check Valve
valve.		in the Service and Adjustment
		section.
Air leaks in air	Defective air tank.	Air tank must be replaced. Do
tank or at air		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.

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