General Faults - Carlisle DeVilbiss PROLite Series Service Manual

TROUBLESHOOTING MECHANICAL PERFORMANCE

GENERAL FAULTS

Will not spray.
Gun spits paint when triggering
on and off.
Gun spits paint when triggering
on due to paint build-up inside
air cap between spraying
operations.
Paint build-up on fluid tip.
Paint build-up on air cap.
Unable to get round spray
SB-E-2-996 R1.0
CAUSE
No air pressure at gun.
Fluid needle adjustment knob
not open enough.
Incorrect needle fitted to gun.
Excessive needle wear.
Excessive fluid nozzle wear.
Fluid nozzle not fitted correctly
in gun head.
Fluid nozzle/needle leakage.
Fluid nozzle not fitted correctly
in gun head.
Fluid nozzle/needle leakage.
Damaged air cap holes.
Gradual build-up of bounce-back
on gun head.
Fluid nozzle or sprayhead
incorrectly fitted.
15/24
CORRECTION
Check air supply and air line.
Open fluid needle adjustment
knob.
Check fluid nozzle/needle
selection chart and fit correct
item.
Replace with new needle.
Replace with new fluid nozzle.
Tighten.
Check for damage or blockage.
Tighten.
Check for damage or blockage.
Replace with new air cap.
Thoroughly clean.
Remove, check components for
damage and refit correctly.
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