Troubleshooting
3A0441A
19
Airless Spray Troubleshooting
Problem
Cause
Solution
Coarse spray
Low pressure
Increase pressure
Excessive fogging
(overspray)
High pressure
Material too thin
Reduce pressure to satisfactory pattern
distribution. Use less thinner.
Pattern too wide
Spray angle too large
Use smaller spray angle Uni-Tip
Pattern too narrow
Spray angle too small
Use larger spray angle Uni-Tip (if cover-
age is acceptable, try tip in same nozzle
group)
Too much material
Nozzle too large
Material too thin
Pressure too high
Use smaller nozzle
Reduce pressure
Too little material
Nozzle too small
Use next larger nozzle
Material too thick
Thin distribution in center
of pattern “horns”
Worn Uni-Tip
Wrong Uni-Tip
Change to new Uni-Tip
Use nozzle with narrow spray angle
Thick skin of work
Material too viscous
Application too heavy
Thin cautiously
Reduce pressure and/or use Uni-Tip in
next smaller nozzle group
Coating fails to close and
smooth over
Material too viscous
Thin cautiously
Spray pattern irregular,
deflected
Orifice clogged
Uni-Tip damaged
Clean carefully
Replace with new Uni-Tip
Craters or pock marks,
bubbles on work
Solvent balance
Use 1 to 3% “short” solvents remainder
“long” solvents (this is most likely to hap-
pen with material of low viscosity, lac-
quers, etc).
Clogged gun screens
Extraneous material in paint
Coarse pigments
Poorly milled pigments
(paint pigments glocculate)
Clean screen.
Use coarse screen if orifice size allows.
Use courser screen with larger orifice tips.
Obtain ball milled paint. If thinner has
been added, test to see if a cover screen.
Incompatible drop placed on top of paint
mixes or flattens out on the paint mixture
and thinners on the surface. If not, try dif-
ferent thinner in fresh batch of paint.
Summary of Contents for Brite Stripper 3000SP
Page 46: ...Notes 46 3A0441A Notes ...
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