Troubleshooting - Graco HVLP Edge 257092 Repair Manual

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
313317J

Troubleshooting

Cause
Pain droplets too large
Paint droplets drying too fast to prop-
erly flow out of gun
Cold weather spraying
Moisture condensation is trapped in
lacquer when spraying in hot, humid
conditions
Silicone contamination from lubri-
cants, grease, polish, or waxes on
the surface being sprayed
Applying too much paint per pass for
the drying conditions
Sprayed surface drying before sol-
vent gas can be released
Solution
• Maintain proper spraying distance, page 5.
• 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 reducer.
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 dry-
ing time.
• Use a slower evaporating solvent or
reducer.
• Do not spray in windy conditions.
Clean all parts with a cleaning solvent; wipe with
a solvent rag and a clean rag. Replace rags as
needed. If problem persists, use a fish eye elim-
inator.
• Move gun faster or decrease fluid flow.
• Maintain proper spraying distance, page 5.
• 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 Trouble-
shooting Table.
Troubleshooting
9