PROBLEM

CAUSE

CORRECTION

Motor will not

Motor overload protection

Let motor cool off and

run.

switch has tripped

overload switch will

 

 

automatically reset.

 

Tank pressure exceeds

Motor will start automatically

 

pressure switch “cut-in”

when tank pressure drops

 

pressure.

below “cut-in” pressure of

 

 

pressure switch.

 

 

Check valve stuck open.

Remove and clean, or replace.

 

Loose electrical

Check wiring connection

 

connections.

inside pressure switch and

 

 

terminal box area.

 

Possible defective motor

Have checked by a Trained

 

or starting capacitor.

Service Technician.

 

Paint spray on internal

Have checked by a Trained

 

motor parts.

Service Technician. Do not

 

 

operate the compressor in the

 

 

paint spray area. See

 

 

flammable vapor warning.

 

Pressure release valve on

Bleed the line by pushing the

 

pressure switch has not

lever on the pressure switch to

 

unloaded head pressure.

the “off” position; if the valve

 

 

does not open, replace switch.

 

Fuse blown, circuit breaker

1. Check fuse box for blown

 

tripped.

fuse and replace as

 

 

necessary.

Reset circuit

 

 

breaker. Do not use a fuse

 

 

or circuit breaker with

 

 

higher rating than that

 

 

specified for your

 

 

particular branch circuit.

 

 

2. Check for proper fuse. You

 

 

should use a time delay

 

 

fuse.

 

 

 

3. Check for low voltage

 

 

conditions and/or proper

 

 

extension cord.

 

 

4. Disconnect the other

 

 

electrical appliances from

 

 

circuit or

operate the

 

 

compressor on its own

 

 

branch circuit.

 

 

 

 

23- ENG

D28914

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Porter-Cable C3550 instruction manual Problem Cause Correction