PROBLEM

 

CAUSE

CORRECTION

Knocking Noise.

 

Possible defect in safety

Operate safety valve manually

 

 

valve.

by pulling on ring. If valve still

 

 

 

 

leaks, it should be replaced.

 

 

Defective check valve.

Remove and clean, or replace.

 

 

Compressor mounting

Tighten mounting screws,see

 

 

screws loose

Parts manual for torque

 

 

 

 

specifications.

 

 

Carbon build-up in pump

Have checked by a Trained

 

 

 

 

Service Technician.

 

 

 

 

 

Squealing

 

 

 

See Oil-Checking paragraph in

 

Compressor pump has no

sound.

 

oil.

 

the Maintenance section.

 

 

 

 

 

 

 

 

 

 

25- ENG

A16759

Page 25
Image 25
Porter-Cable A16759 instruction manual Problem Cause Correction