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Spray Finish Problems
Problem
Orange peel finish - Paint surface not
smooth
Blushing - clear coatings appear
milky
Fish eyes - small pools on painted
surface that will not fill
Runs and sags
Solvent pops or bubbles
44
Troubleshooting
Cause
Pain droplets too large
Paint droplets drying too fast to
properly flow out of gun
Cold weather spraying
Moisture condensation is trapped in
lacquer when spraying in hot, humid
conditions
Silicone contamination from
lubricants, grease, polish, or waxes
on the surface being sprayed
Applying too much paint per pass for
the drying conditions
Sprayed surface drying before
solvent gas can be released
Troubleshooting
Solution
•
Maintain proper spraying
distance, page 26.
•
Keep turbine air filters clean to
allow full air flow.
•
Do not use an air hose that is too
long to provide sufficient
atomization pressure.
•
If droplets are still too large,
reduce fluid.
Keep object being sprayed out of
direct sunlight. When spraying in
warmer temperatures, use a slower
evaporating solvent or a retarder.
Keep fluid and object being sprayed
as close to room temperature as
possible. When spraying on a cold
surface, most paints will become too
thick to flow properly.
•
Allow turbine to warm up a few
minutes before spraying.
•
Store lacquer off concrete floors,
at room temperature.
•
Apply lighter coats and allow for
proper drying time.
•
Use a slower evaporating solvent
or retarder.
•
Do not spray in windy conditions.
Clean all parts with a cleaning
solvent; use a solvent rag and a
clean rag to wipe with. Replace rags
as needed. If problem persists, use a
fish eye eliminator.
•
Move gun faster or decrease fluid
flow.
•
Maintain proper spraying
distance, page 26.
•
Reduce amount of thinner or use
a faster drying thinner.
•
Apply fluid in lighter coats to
allow for proper evaporation.
•
Use the recommended thinners.
•
Follow the solutions for Orange
Peel Finish, Paint Droplets Too
Large in this Troubleshooting
Table.
310964B
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