Troubleshooting guide (continued) – DeVilbiss D22073 User Manual
Page 11
11 - ENG
D22073
TROUBLESHOOTING GUIDE (Continued)
CORRECTION
CAUSE
PROBLEM
Damaged regulator.
Replace regulator.
1.
Check fuse box for blown fuse and replace, if
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.
3.
Check for low voltage conditions and/or proper
extension cord.
4.
Disconnect the other electrical appliances from
circuit or operate the compressor in its own
branch circuit.
Air leak from safety valve.
Knocking Noise
Compressor is not supplying
enough air to operate accesso-
ries.
Motor will not run.
Regulator knob has continuous
air leak. Regulator will not shut off
at air outlet.
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.
Prolonged excessive use of air.
Decrease amount of air usage.
Compressor is not large enough for air
requirement.
Check the accessory air requirement. If it is higher than
the SCFM or pressure supplied by your air compres-
sor, you need a larger compressor.
Hole in hose.
Check and replace.
Check valve restricted.
Remove and clean, or replace.
Air leaks.
Tighten fittings. (See Air Leaks Section of Trou-
bleshooting Guide.)
Tank pressure exceeds pressure switch
“cut-in” pressure.
Motor will start automatically when tank pressure
drops below “cut-in” pressure of pressure switch.
Wrong gauge wire or length of exten-
sion cord.
Check for proper gauge wire and cord length.
Check valve stuck open.
Remove and clean, or replace.
Loose electrical connections.
Check wiring connection inside pressure switch and
terminal box area.
Paint spray on internal motor parts.
Have checked at an Authorized Warranty Service
Center. Do not operate the compressor in the paint
spray area. See flammable vapor warning.
Possible defective motor.
Have checked at an Authorized Warranty Service
Center.
Fuse blown, circuit breaker tripped.