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Page 10 SB-2-001-F
CONDITION
Dry Spray
Fluid leaking from
packing nut
Fluid leaking or dripping
from front of pressure
feed gun
Runs and sags
Thin, sandy coarse finish
drying before it flows out
Thick, dimpled finish
"orange peel". Too much
material coarsely
atomized
CAUSE
Air pressure too high.
Material not properly reduced
(suction feed).
Gun tip too far from work surface.
Gun motion too fast.
Gun out of adjustment
Packing nut loose.
Packing worn or dry
Packing nut too tight
Dry packing.
Fluid tip or needle worn or
damaged
Foreign matter in tip.
Fluid needle spring missing or
broken.
Wrong size needle or tip.
Needle bound by misaligned
sprayhead, (MBC guns only).
Too much material flow.
Material too thin.
Gun tilted on an angle.
Gun too far from surface.
Too much air pressure.
Improper thinner being used.
Gun too close to surface.
Air pressure too low.
Improper thinner being used.
Material not properly mixed.
Surface rough, oily, dirty.
CORRECTION
Decrease air pressure.
Reduce to proper consistency.
Adjust to proper distance.
Slow down.
Adjust.
Tighten, do not bind needle.
Replace or lubricate.
Adjust
Lubricate.
Replace tip & needle with lapped
sets.
Clean.
Replace.
Replace.
Tap sprayhead perimeter with a
wooden mallet. Retighten lock bolt.
Adjust gun or reduce fluid pressure.
Mix properly or apply light coats.
Hold gun at right angle to work and
adapt to proper gun technique.
Check distance. Normally 6-8" - HVLP,
8-10" - conventional.
Reduce air pressure and check
spray pattern.
Follow paint manufacturer's
mixing instructions.
Check distance. Normally 6-8" - HVLP,
8-10" - conventional.
Increase air pressure or reduce
fluid pressure.
Follow paint manufacturer's
mixing instructions.
Follow paint manufacturer's
mixing instructions.
Properly clean and prepare.
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