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MAINTENANCE
TROUBLESHOOTING GUIDE
General Problem
Inconsistent
Powder Cloud
No Power or
Air Delivery
No Electrostatics/
Poor Coverage (e.g.
no wrap around,
little or no powder
adhesion)
Poor wrap around
Back spray
Powder Flow Rate
Insufficient
Spray Cloud No
Longer Correct
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Possible Cause
Wear bar or flat spray nozzle are improperly
oriented
Improper power cord connection.
Improper controller/gun cable connection.
Insufficient air supply
Defective fuse on controller.
Improper grounding.
Check high voltage settings.
Powder deliver rate too excessive.
Excessive humidity within powder booth air.
Gun/controller cable.
Defective fuse on controller.
Improper Grounding.
Gun too far from applicator.
Hoses kinked.
Air leaks in powder delivery system.
Low powder level.
Insufficient main air supply.
Improper powder feed and dosage air settings.
Powder accumulation within powder injector.
Insufficient main air supply.
Improper powder feed and dosage air
settings.
Worn nozzle system.
See "Installing the Nozzle" section in PA-17-08.
Check plug connections.
Check cable connections.
Check main air supply.
Replace fuse.
Check proper part and hanger grounding.
Adjust high voltage settings.
Decrease powder feed air to reduce excess powder
volume and velocity.
Check humidity level, powder particles dissipate
charge in humid environments.
Check continuity of cable and replace as needed.
Replace fuse.
Check part and hanger grounding.
Ensure proper distance between gun and part.
Too far from part will cause gun and operator to be
coated (particles seek closest ground).
Check hoses.
Check for leaks.
Check power level.
Check main air supply.
Check settings.
Inspect and clean/replace.
Check main air supply.
Check settings.
Replace nozzle system.
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MAINTENANCE
Solution
PA-18-03-R6 (02/2022)
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