3
PATTERN ADJUSTMENT
1. Adjust air pressure to the spray
gun according to the recommenda-
tions supplied with the spray mate-
rial. This air pressure usually falls
between 40 - 60 psi.
Do
not
exceed
spray gun maximum pressure.
Adjust air pressure with the trig-
ger pulled and air control knob (if
applicable) fully open. If reduced
air pressure is desired for some
areas of the spray job, use the air
compressor regulator or air control
knob to reduce pressure as neces-
sary (See Figure 4).
2. Set pattern size to desired shape. For
full pattern, open pattern control
knob by turning counterclockwise.
For a round pattern, turn pattern
control knob clockwise (See Figure 5).
3. Turn fluid control knob fully clock-
wise until closed (See Figure 5).
4. Trigger a short burst while turning
fluid control knob counterclockwise.
Observe the spray pattern on the tar-
get and adjust the fluid control knob
until the desired pattern (atomiza-
tion) is obtained (See Figure 6).
If the spray is too fine (excessive over-
spray), caused by too much air for the
amount of paint being sprayed, reduce
the air pressure or open the fluid con-
trol to spray more material.
If the spray is too coarse (spitting globs),
reduce the amount of material with the
fluid control knob or thin the paint.
5. The fluid control knob can be used
to finely adjust pattern consistency.
Before spraying the workpiece, practice
a few minutes on a cardboard target to
ensure the pattern size and consistency
are set correctly.
Operation
1. Begin spraying.
Always keep
the gun at
right angles to
the work (See
Figure 8).
2. Keep
the
noz-
zle about 6 to 9
inches from the
work surface
throughout
the stroke and
always keep
the gun in
motion while
spraying. Stopping gun movement
in mid-stroke will cause a build up
of paint and result in runs. Do not
fan the gun from side to side while
painting. This will cause a build-up
of paint in the center of the stroke
and an insufficient coating at each
end (See Figure 9).
WATER/OIL IN COMPRESSED AIR
All compressor pumps discharge some condensed water, oil or contaminates with
the compressed air.
IMPORTANT:
This condensation will cause “fish eyes” to appear in the paint
job. Install appropriate water/oil removal equipment and controls as necessary
for the intended application. Locate filter as close to spray gun as possible.
Failure to install appropriate water/oil removal
equipment may result in damage to machinery or
workpiece.
Operating Instructions and Parts Manual
Gravity Feed Spray Gun
Figure 3
Horizontal Fan
Vertical Fan
Air Cap
Lock Ring
Figure 4 - Air Adjustment on Spray Gun
Increase
Air Flow
Decrease
Air Flow
Air Control
Knob
Figure 5 - Pattern Size
Pattern control knob
Fluid control
knob
Figure 7 - Gravity Feed Spray Gun
Fluid Control Knob
Trigger
Fluid Tip (Nozzle)
Pattern Control Knob
Cup
Air Cap
1/4 (in.) NPS Air Inlet Fitting
Vent Hole
Fluid Packing Nut
Air Valve Packing Nut
Correct
Paint too
coarse
Paint too
fine
Figure 6 - Pattern Consistency
(Atomization)
Preparation
(Continued)
6 - 9”
Figure 8
