Graco Alpha Plus AA Instructions-Parts List Manual page 8

3. Flush the Spray Gun.
Remove the air cap retaining ring (18), air cap (14),
and spray tip (33).
Before putting any finishing fluid through the spray
gun, flush the gun out with a solvent that is compatible
with the fluid to be sprayed, using the lowest possible
fluid pressure and a grounded metal container.
Fig. 2
4. Relieve the Pressure.
WARNING
PRESSURIZED EQUIPMENT HAZARD
To reduce the risk of a serious injury whenever you
are instructed to relieve pressure, follow the Pres-
sure Relief Procedure on page 9.
8 309117
Setup
5. Select a Spray Tip and Air Cap.
The fluid flow and pattern width depend on the size of
the spray tip, the fluid viscosity, and the fluid pressure.
Contact your Graco distributor for assistance in select-
ing an appropriate spray tip for your application. Refer
to the Tip Selection Charts on page 26.
6. Install a Spray Tip.
Install a spray tip in the gun. Insert the tip into the air
cap. Ensure that the tip locating pin is positioned in the
slot of the air cap. Insert the air cap into the tip guard/
retaining ring (18) and tighten this assembly onto the
gun firmly by hand, to ensure a good seal between the
tip gasket and the seat housing (13).
7. Position the Air Cap
The air cap and spray tip position determines the
direction of the spray pattern.
Rotate the air cap (the spray tip rotates with it) as
needed to achieve the desired spray pattern direction.
9126A
Fig. 3
Vertical Pattern
Horizontal Pattern
02020