10 820-204
Startup
To reduce static sparking and splashing
when priming, be sure the spray tip is
not installed on the gun, and hold a
metal part of the gun firmly to the side of a
grounded metal pail.
WARNING
FIRE AND EXPLOSION HAZARD
7.
To prime the hose, lower the pressure to reduce
splashing. Holding the gun against the pail, trigger
the gun and slowly increase the pressure until the
pump starts. Keep the gun triggered until all air is
forced out of the system and the fluid flows freely
from the gun. Release the trigger and engage the
gun safety latch.
8.
Check all fluid connections for leaks. Relieve
pressure before tightening any connections.
9.
Install the spray tip. Engage the gun safety latch
first! See manual 308–644 for how to install the tip.
10. Adjust the spray pattern
a.
Increase the pressure just until spray from the
gun is completely atomized. To avoid exces-
sive overspray and fogging, and to extend tip
and sprayer life, always use the lowest pres-
sure needed to get the desired results.
b.
If more coverage is needed, use a larger tip
rather than increasing the pressure.
c.
Test the spray pattern. To adjust the direction
of the spray pattern, engage the gun safety
latch and loosen the retaining nut (B). Position
the tip guard horizontally for a horizontal pat-
tern or vertically for a vertical pattern. Hold the
tip guard in place while tightening the retaining
nut. See Fig. 8.
NOTE: Spray patterns will change as tips wear.
Change the spray tip if adjusting the pressure will not
improve the spray pattern.
For a horizontal
spray pattern
For a vertical
spray pattern
Fig. 8
1
2
2
1
B
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