Troubleshooting
26 3A8099A
Irregular pattern
• Spray tip partially
plugged
• Dirty or plugged air
cap holes
• Clean or replace tip
• Clean or replace air cap
• Test different types of air
caps
• Even and
blended finish
• Even 50%
overlaps
• Even paint
thickness and
coverage
Fogging, overspray, or dry spray
• Too much atomization
air
• Too high of fluid
pressure
• Incorrect tip size
• Reduce air pressure
• Decrease fluid pressure
• Increase tip orifice size
• Increase
transfer
efficiency
• Decrease
overspray
• Improves
spray booth
cleanliness
Paint runs or Paint Coverage
Thickness
• Too much fluid flow
• Tip worn
• Incorrect tip size
• Operator spray
technique
• Check tip wear and flow
rate
• Decrease tip orifice size
• Review operator
technique
• Minimizes runs
• Maintains
transfer
efficiency
• Even paint
thickness and
coverage
• Even 50%
overlaps
Rough finish or specking
• Too much atomization
air
• Too much fan pattern
adjustment
• Too much distance
between gun and part
• Decrease air pressure
• Decrease tip pattern size
• Adjust gun to part
distance
• Increases
wetness of the
paint on the
part
• Allows material
to flow evenly
• Even / blended
finish
Problem Possible Causes Solutions
Why it is
important
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