Husky HDS500 Instructions D'utilisation page 4

Operating Instructions
preparation (cont.)
pattern aDjUStment
SIPHON AND GRAVITY FEED
1. Adjust air pressure to the spray gun
according to the recommendations
supplied with spray material. This
air pressure usually falls between
40 - 60 psi. Adjust air pressure with
trigger pulled and air control knob
(if applicable) fully open. If reduced
air pressure is desired for some areas
of spray job, use air control knob to
reduce pressure as necessary (See
Figure 7).
Air Control
knob
Increase
Air Flow
figure 7 - 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 8).
Pattern control knob
Fluid control
knob
figure 8 - pattern Size
3. Turn fluid control knob fully
clockwise until closed (See Figure 8).
4. Trigger a short burst while turning
fluid control knob counterclockwise.
Observe the spray pattern on the
target and adjust the fluid control
knob until the desired pattern
(atomization) is obtained (See
Figure 9).
Correct
Paint too
fine
figure 9 - pattern Consistency
(atomization)
If the spray is too fine (excessive
overspray), caused by too much air for
the amount of paint being sprayed,
reduce the air pressure or open the
fluid control 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.
PRESSURE FEED SET-UP
1. Adjust air pressure to the spray gun
according to the recommendations
supplied with the spray material. This
air pressure usually falls between 40 -
60 psi. Adjust air pressure with the
trigger pulled and air control knob (if
applicable) fully open. If reduced air
pressure is desired for some areas of
the spray job, use air control knob to
reduce pressure as necessary (See
Figure 7).
2. Set pattern size to desired shape. For
full pattern, open pattern control
knob by turning counterclockwise.
For a round pattern, turn pattern
Decrease
control knob clockwise (See Figure 8).
Air Flow
3. Open the fluid control knob by turning
counterclockwise about three turns.
4. Start the tank pressure at 0 psi and
turn the tank regulator slowly
to increase fluid delivery until
the desired pattern consistency
(atomization) is reached.
5. If the atomization is too coarse,
reduce the tank pressure with the
tank regulator. Trigger a short burst
or open relief valve to relieve the
pressure, then increase pressure
slowly to obtain proper pattern
consistency (See Figure 9).
6. 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
10).
keep the nozzle
about 6 to 9 inches
from the work
Paint too
surface throughout
coarse
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 11).
figure 11
2. "Trigger" the gun properly. Start
Start
Stroke
figure 12
3. The amount of paint being applied
4. Overlap strokes just enough to
6 - 9 in.
figure 13
5. Use a piece of cardboard as a shield
figure 10
4
HDS500, HDS750
Heavy coat
Thin coat
the gun moving at the beginning
of the stroke BEFORE SQUEEZING
THE TRIGGER and release the trigger
BEFORE STOPPING GUN MOVEMENT
at the end of the stroke. This
procedure will "feather" (blend) each
stroke with the next without showing
overlap or unevenness (See Figure 12).
6 - 9 in.
Pull
Trigger
can be varied by the speed of the
stroke, distance from the surface and
adjustment of the fluid control knob.
obtain an even coat (See Figure 13).
nOte: Two thin coats of paint will
yield better results and have less
chance of runs than one heavy layer.
to catch overspray at the edges of
the work to protect other surfaces.
Use masking tape to cover other
areas if needed.
Thin coat
Release
Trigger
End
Stroke