Graco HVLP-Turbine Gun, Instructions-Parts List Manual

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Troubleshooting
20 309205R
Troubleshooting
Spray Finish Problems
Problem Cause Solution
Orange peel finish - Paint surface not
smooth Pain droplets too large • Maintain proper spraying dis-
tance, page 12.
• Keep turbine air filters clean to
allow full air flow.
• Do not use an air hose that is too
long to provide sufficient atomi-
zation pressure.
• If droplets are still too large,
reduce fluid.
Paint droplets drying too fast to prop-
erly flow out of gun Keep object being sprayed out of
direct sunlight. When spraying in
warmer temperatures, use a slower
evaporating solvent or a retarder.
Cold weather spraying Keep fluid and object being sprayed
as close to room temperature as pos-
sible. When spraying on a cold sur-
face, most paints will become too
thick to flow properly.
Blushing - clear coatings appear
milky Moisture condensation is trapped in
lacquer when spraying in hot, humid
conditions • 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.
Fish eyes - small pools on painted
surface that will not fill Silicone contamination from lubri-
cants, grease, polish, or waxes on
the surface being sprayed Clean all parts with a cleaning sol-
vent; use a solvent rag and a clean
rag to wipe with. Replace rags as
needed. If problem persists, use a
fish eye eliminator.
Runs and sags Applying too much paint per pass for
the drying conditions • Move gun faster or decrease fluid
flow.
• Maintain proper spraying dis-
tance, page 12.
• Reduce amount of thinner or use
a faster drying thinner.
Solvent pops or bubbles Sprayed surface drying before sol-
vent gas can be released • 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.