DeVillbiss Air Power Company D23757 manual Troubleshooting, Problem Cause Correction

TROUBLESHOOTING

Performing repairs may expose voltage sources, moving parts or compressed air sources, moving parts or com- pressed 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 - safety	shut off motor when com-	the “OFF” position, if the
valve pops off.	pressor reaches “cut-out”	outfit does not shut off con-
	pressure.	tact a 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
		solution. Do Not
		Overtighten.
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.
Air leak from	Possible defect in safety	Operate safety valve manual-
safety valve.	valve.	ly by pulling on ring. If valve
		still leaks, it should be
		replaced.
Knocking Noise.	Possible defect in safety	Operate safety valve manual-
	valve.	ly by pulling on ring. If valve
		still leaks, it should be
		replaced.

17- ENG D23757