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-2-512 R1
CAUSE
No air pressure at gun.
Fluid needle adjustment knob
not open enough.
Incorrect needle fitted to gun.
Excessive needle wear.
Excessive fluid tip wear.
Fluid tip not fitted correctly in
gun head.
Fluid tip/needle leakage.
Fluid tip not fitted correctly in
gun head.
Fluid tip/needle leakage.
Damaged air cap holes.
Gradual build-up of bounce-back
on gun head.
Fluid tip or sprayhead incorrectly
fitted.
15/24
CORRECTION
Check air supply and air line.
Open fluid needle adjustment
knob.
Check fluid tip/needle selection
chart and fit correct item.
Replace with new needle.
Replace with new fluid tip.
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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