17 - ENG
D23377
PROBLEM
CAUSE
CORRECTION
Possible defect in safety valve.
Operate safety valve manually by
pulling on ring. If valve still leaks,
it should be replaced.
Defective check valve.
Remove and clean, or replace.
Knocking Noise.
Compressor is not supplying
enough air to operate accessories.
Prolonged excessive use of air.
Compressor is not large enough
for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter
Decrease amount of air usage.
Check the accessory air require-
ment. If it is higher than the
SCFM or pressure supplied by
your air compressor, you need a
larger compressor.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings.
Clean or replace air intake filter.
Do not operate the air compressor
with the filter removed. Refer to
the “Air Filter” paragraph in the
“Maintenance “ section.
Damaged regulator
Replace
Regulator knob has continuous air
leak.
Regulator will not shut off air out-
let.
Damaged regulator
Replace
