Troubleshooting
6 312372E
Troubleshooting
Problem Cause Solution
One side of air cap (1) dirty
or clogged.
Clean air cap orifices. See page 5. Blow air
through orifices until clean. If air cap holes are
damaged, replace air cap.
a. Loose air cap (1). a. Tighten.
b. Dried or damaged air cap
(1) or fluid nozzle (2).
b. Rotate air cap 180°.
If pattern follows air cap, problem is in air
cap. Clean and inspect. See page 5. If
pattern is not corrected, replace air cap.
If pattern does not follow the air cap, the
problem is with the fluid nozzle. Clean and
inspect the nozzle. See page 5. If the pat-
tern is not corrected, replace nozzle.
a. Atomization air pressure
set too high.
a. Reduce air pressure.
b. Spraying a thin material
in too wide of a pattern.
b. Increase material control by turning fluid
adjustment knob (8-2) counterclockwise,
while reducing spray width by turning pat-
tern adjustment knob (5) clockwise.
Or increase material viscosity.
Air getting into paint stream.
a. Cup almost empty. a. Fill cup.
b. Dry needle packing (3-1
or 3-2).
b. Loosen packing nut and put a few drops of
machine oil on packings (3-1 and 3-2).
Retighten nut (4).
c. Fluid nozzle (2) too loose. c. Tighten.
d. Dried material between
nozzle (2) and gun body.
d. Clean nozzle and front of gun. See page
5.
e. Damaged needle seal. e. Replace seal. See page 7.
Other spray
pattern problems.
a. Gun not properly
adjusted.
a. See page 4.
b. Sluggish needle (10). b. Clean and lubricate.
Unable to get
round pattern.
Pattern adjustment knob (5)
not seating properly.
Clean or replace knob.
Will not spray. a. No air pressure at gun. a. Check air supply and air lines.
b. Cup empty. b. Fill cup.
c. Fluid adjustment knob
(8-2) turned too far
clockwise.
c. Adjust knob (8-2) counterclockwise.
d. Fluid too thick for gravity
feed.
d. Thin material.
Spitting
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