Model h6331 hVhp spray gun set
-17
-
symptom
possible cause
solution
excessive over-
spray.
1. Fluid pressure too high.
2. gun is too far from surface.
3. spraying too fast.
1. reduce fluid pressure.
2. Keep gun at recommended
distance.
3. slow down and maintain
consistent, even parallel
stroke.
unable to control
spray fan.
1. pattern adjustment screw is
not seating properly.
2. atomizing cap is loose.
1. Clean or replace.
2. tighten atomizing cap.
runs and sags.
1. over diluted paint.
2. spray sweep is too slow.
3. tip too close to workpiece.
4. damaged seal.
1. refer to paint manufacture
dilution ratios.
2. speed up spraying sweeps.
3. Move tip farther away from
workpiece.
4. replace damaged seals.
Material leaks from
cup.
1. Cap not secure.
2. Cup not tight on gun body.
3. leaking from cap vent hole.
1. tighten.
2. tighten.
3. hold gun upright; do not tilt.
Material leaks from
gun.
1. Fluid tip loose.
2. dry or damaged seals.
3. excessive pressure.
1. tighten.
2. replace seals.
3. reduce pressure.
thick dimpled fin-
ish, aka "orange
peel."
1. holding gun too close to sur-
face.
2. inlet air pressure too low.
3. Material not properly mixed.
4. surface is dirty or oily.
1. spray at recommended dis-
tance.
2. Check inlet air pressure.
3. Follow manufacturer's
instructions.
4. More surface prep is
required.
dry spray.
1. inlet air pressure too high.
2. gun too far from surface.
3. gun stroke too fast.
1. lower inlet air pressure.
2. Keep gun at recommended
distance.
3. slow down and maintain
consistent even parallel
stroke.
gun leaks from
fluid tip.
1. debris will not let the needle
seat with the fluid tip.
1. Clean or replace both.
Contaminated
paint, aka "Fish
eyes.
1. Work surface has oil spots, or
was improperly cleaned and
primed.
2. Water or oil in the air line.
1. Wait until finish is dry and
cured, re-sand clean and
re-prime, and repaint.
2. install an in-line air filter.