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Prime the Pump (continued)
6. Place the pump suction tube (26) into the fluid
supply container.
7. Open the bleed-type air valves (B, E).
8. Hold a metal part of the gun (106) firmly to the side
of a grounded metal pail and hold the trigger open.
9. Slowly open the air regulator (F) until the pump
starts.
NOTE: To open the air regulator, turn the T-handle in
(clockwise). To close the regulator, turn the handle
counterclockwise. To lock the regulator setting, tighten
the jam nut.
10. Cycle the pump slowly until all air is pushed out
and the pump and hoses are fully primed.
11. Release the gun trigger and lock the trigger safety.
The pump should stall against pressure.
12. If the pump fails to prime properly, open the drain
valve (D). Use the drain valve as a priming valve
until the fluid flows from the valve. Close the valve.
NOTE: When changing fluid containers with the hose
and gun already primed, open the drain valve (D) to
help prime the pump and vent air before it enters the
hose. Close the drain valve when all air is eliminated.
Install the Spray Tip
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Relieve the pressure. Install the spray tip and tip guard
as explained in your separate gun manual, supplied.
The spray tip shapes the fluid into a fan pattern. The
orifice size determines the flow rate, and the orifice
shape determines the width of the fan pattern.
Operation
Adjust the Spray Pattern
1. Start the pump. Use the air regulator (F) to adjust
the pump speed and fluid pressure until the spray
is completely atomized. Use the lowest pressure
necessary to get the desired results. Higher pres-
sure may not improve the spray pattern and will
cause premature tip wear and pump wear.
exceed the specified Maximum Air Input Pressure
(see the Technical Data, on page 14).
2. Use a full-open, full-close triggering action. Hold
the gun about 14 in. (350 mm) from and at right
angles to the work surface. Move the gun in a
straight stroke; do not swing the gun in an arc.
Practice to find the best length and speed of
stroke.
3. If adjusting the pressure does not give a good
spray pattern, relieve the pressure and try another
tip size. When more coverage is needed, use a
larger spray tip rather than increasing the fluid
pressure.
4. With the pump and lines primed, and with ade-
quate air pressure and volume supplied, the pump
will start and stop as you open and close the gun.
Do not allow the pump to run dry. It will quickly
accelerate to a high speed, causing damage. If your
pump is running too fast, stop it immediately and
check the fluid supply. If the container is empty and
air has been pumped into the lines, refill the con-
tainer and prime the pump and the lines, or flush and
leave it filled with a compatible solvent. Eliminate all
air from the fluid system.
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing
your system, which could cause compo-
nent rupture and serious injury, never
CAUTION
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