Operation - Graco A Series Instructions Manual

WARNING
INJECTION HAZARD
To reduce the risk of a fluid injection
injury, do not operate the pole gun with
the tip guard or trigger guard removed.
In-Line Gun Trigger Safety Lever
For SAFETY ON position, rotate trigger safety lever so
it is in line with trigger. For SAFETY OFF position, flip
safety lever so it is 90_ to trigger. Fig. 1.
NOTE: In the SAFETY ON position the lever sits in a
detent which holds it in place.
SAFETY ON
Fig. 1
Using the CleanShot Shut- -Off Valve
The CleanShot Shut--Off Valve provides two settings:
SPRAY and FLUSH. The valve is factory set to the
SPRAY position for spraying at pressures above 700
psi (4.8 MPa, 48 bar). Rotate the valve knob counter--
clockwise to the FLUSH position for flushing, cleaning,
priming and relieving pressure. The FLUSH position is
also used for low pressure spraying applications below
1000 psi (6.9 MPa, 69 bar). Fig. 2.
Fig. 2
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Operation

SAFETY OFF
TI0687
Startup
1. Start pump. Adjust fluid pressure so spray is
completely atomized. Always use lowest pressure
that gets desired results. Higher pressure may not
improve spray pattern and causes premature tip
and pump wear.
NOTE: The spray tip orifice size and spray angle
determine the coverage and size of the pattern.
When more coverage is needed, use a larger
spray tip rather than increasing the fluid pressure.
If adjusting the pressure
does not give a good spray
pattern, try another size tip.
2.
Relieve the pressure
before you change the
spray tip.
3. Use full-open, full-close trigger action. Hold tip at a
right angle to the work surface, about 14 inches
(350 mm) away. Do not swing pole gun in arcs.
Practice to find the best length and speed of
stroke.