Craftsman 919.72755 owner manual Troubleshooting, Problem Cause Correction

TROUBLESHOOTING

Performing repairs may expose voltage sources, moving parts or compressed air sources, moving parts or compressd 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 - safety	Pressure switch does not shut off	Move On/Auto/Off lever to the
valve pops off.	motor when compressor reaches	“OFF” position, if the outfit does
	“cut-out” pressure.	not shut off contact a Trained
		Service Technician.
	Pressure switch “cut-out” too	Contact a Trained Service
	high.	Technician.
Air leaks at fittings.	Tube fittings are not tight enough.	Tighten fittings where air can be
		heard escaping. Check fittings
		with soapy water solution. DO
		NOT OVERTIGHTEN.
Air leaks at pressure switch	Defective pressure switch release	Contact a Trained Service
release valve.	valve.	Technician.
Air leaks in air tank or at air tank	Defective air tank.	Air tank must be replaced. Do not
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 between head and valve	Leaking seal.	Contact a Trained Service
plate.		Technician.
Pressure reading on the regulated	It is normal for “some” pressure	If there is an excessive amount of
pressure gauge drops when an	drop to occur.	pressure drop when the accessory
accessory is used.		is used, adjust the regulator follow-
		ing the instructions on page 6.
		NOTE: Adjust the regulated pres-
		sure under flow conditions (while
		accesory is being used).
Air leak from safety valve.	Possible defect in safety valve.	Operate safety valve manually by
		pulling on ring. If valve still leaks,
		it should be replaced.

D23122 14 - ENG