TROUBLESHOOTING

Performing repairs may expose voltage sources, moving parts, or compressed air sources. Personal injury may occur. Before serv- icing: 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 - safe-

shut off motor when com-

the “OFF” position, if the air

 

ty valve pops

pressor reaches “cut-out”

compressor does

 

off.

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 OVER-

 

 

 

TIGHTEN.

 

 

 

 

 

 

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 to the “To

 

 

 

 

Replace or Clean Check

 

 

 

 

Valve” in the “Service and

 

 

 

 

Adjustments” 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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D24910

24- ENG

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Craftsman 919.19541 owner manual Troubleshooting, Problem Cause Correction