Speedaire 4RR09B Manual De Instrucciones De Operation página 3

Speedaire Operating Instructions
Models 4rr09B and 4rr10B
Operation (continued)
2. Attach air hose to air supply.
3. Add paint to cup or jar. Make sure
paint has been mixed and thinned
properly (see "Preparation").
4. Turn compressor on.
5. Regulate air pressure to air brush
(20 - 30 psi working pressure, 50 psi
maximum).
6. Press finger lever down and pull
back slightly to spray paint (see
"Triggering Exercises" for specific
spraying operations).
7. Release finger lever, disconnect air
supply and clean air brush when
work is completed.
painting procedure
Be sure workpiece is clean and free of
dust, grease, etc. Mask off any area not
to be painted. Hang or place small pieces
(such as models) on a pedestal or stand
so all paintable areas are easily accessible
(A stand may be built from an ordinary
wire coat hanger, or bottle, etc.).
Hold air brush nozzle about 6 inches
from workpiece. Use short strokes,
moving air brush at a steady rate,
parallel to the work surface as shown in
Figure 2.
figure 
To achieve full coverage, first apply a
light coat, then let paint dry and apply
another coat. Repeat until desired
coverage is achieved. Do not try for
complete coverage with one pass.
Triggering Exercises
Use cardboard or newspaper to perform
triggering exercises.
ExErCISE 1—SprayING
A steady, constant motion produces
the best results. Start motion before
pressing finger lever, follow through
with motion after releasing finger lever
as shown in Figure 2.
Be sure to keep air brush parallel to
work surface when painting. If air brush
motion is moved in an arc or the motion
is unsteady, the paint finish will be
uneven as shown in Figure 3.
I N C O r r E C T
figure 
ExErCISE —pOSITION aND
DENSITy CONTrOl
1. Lightly pencil a grid of 1/2" squares
on a piece of paper.
2. Use diluted india ink or water-
soluble materials for this exercise.
Hold air brush approximately 1/2 in.
away from paper and spray small
dots on the intersecting lines. See
Figure 4.
figure 4
3. After placement is accurately
achieved, enlarge dot size by
allowing more material to flow
through airbrush and by increasing
the distance between airbrush and
paper. See Figure 5.

figure 5
4. Do not hold air brush too close to
the paper or hold the finger lever all
the way back and down. This action
will cause "puddles" to form and
spread. See Figures 6 and 7.
figure 6
figure 7
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