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

Pressure switch does

 

Move On/Off lever to

- safety valve pops off.

not shut off motor when

 

the "Off" position, if

 

compressor reaches

 

the outfit does not shut

 

"cut-out" pressure.

 

off contact a Trained

 

 

 

Service Technician.

 

Pressure switch "cut-

 

Contact a Trained

 

out" too high.

 

Service Technician.

 

 

 

 

 

 

 

Air leaks at fittings.

Tube fittings are not tight

 

Tighten fittings where air

 

enough.

 

can be heard escaping.

 

 

 

Check fittings with

 

 

 

soapy water solution. Do

 

 

 

Not Overtighten.

 

 

 

 

 

 

 

Air leaks in air tank or at

Defective air tank.

 

Air tank must be

air tank welds.

 

 

replaced. Do not repair

 

 

 

the leak.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Risk bursting. Do

 

 

 

not drill into, weld or

 

 

 

otherwise modify air

 

 

 

tank or it will weaken.

 

 

 

The tank can rupture

 

 

 

or explode.

Air leaks between head

Leaking seal.

 

Contact a Trained

and valve plate.

 

 

Service Technician.

 

 

 

 

 

 

 

Air leak from safety

Possible defect in safety

 

Operate safety valve

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.

17 - ENG

N014212

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Craftsman 919.15216 owner manual Troubleshooting