Husky HDS780 Manual De Instrucciones página 6

Operating Instructions and Parts Manual
Preparation
(Continued)
Air Cap
Horizontal Fan
Vertical Fan
Lock Ring
Figure 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.
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).
Air Control
Knob
Increase
Air Flow
Figure 4 - Air Adjustment on Spray Gun
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).
Pattern control knob
Fluid control
knob
Figure 5 - Pattern Size
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.
workpiece.
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).
Do not
Paint too
exceed
fine
Figure 6 - Pattern Consistency
(Atomization)
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.
Decrease
Air Flow
Fluid Tip (Nozzle)
Fluid Packing Nut
Figure 7 - Gravity Feed Spray Gun
WATER/OIL IN COMPRESSED AIR
Failure to install appropriate water/oil removal
equipment may result in damage to machinery or
Paint too
Correct
coarse
Air Cap
Trigger
3
Gravity Feed Spray Gun
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.
6 - 9"
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).
Vent Hole
Cup
Pattern Control Knob
Fluid Control Knob
Air Valve Packing Nut
1/4 (in.) NPS Air Inlet Fitting
Figure 8