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Setup
311052E 11
Setup
Flush Spray Gun
Before running any paint through the spray gun:
1. Flush the gun with a solvent that is compatible with
the fluid to be sprayed, using the lowest possible
fluid pressure and grounded metal container.
2. Perform Pressure Relief Procedure; see page 12.
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.
See page 31 and page 32 for spray tip selection charts.
Contact your Graco distributor for assistance in select-
ing an appropriate spray tip for your application.
Install a Spray Tip
1. Perform Pressure Relief Procedure, page 12.
2. Install a spray tip in the gun.
3. Align tip locating tab with slot on the air cap. See
F
IG. 7.
4. Tighten the air cap retaining ring (8) firmly by hand
to ensure a good seal between the tip gasket and
the diffuser (10).
Position the Air Cap
The air cap and spray tip position determines the direc-
tion of the spray pattern.
Rotate the air cap (the spray tip rotates with it) as
needed to achieve the desired spray pattern direction.
See F
IG. 8.
Air Cap Alignment Pin
Air caps are factory-set with an air cap alignment pin to
position the air cap. The standard location of the air cap
alignment pin is the vertical spray pattern.
To change the spray pattern direction, use a needle
nose pliers to unscrew the pin and relocate it to the
desired position. See F
IG. 9. When relocating the pin
use low-strength thread locker. Torque to 1.5-2.5 in-lb
(0.2-0.3 N•m). Do not overtighten.
FIG. 7
TI6847A
Tip Locating Tab
Slot
F
IG. 8
F
IG. 9
TI6558A
TI6847A
Horizontal
Air Cap Position
(standard)
Vertical
Air Cap Position