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