Graco Inc G40, 311052E, 288046, 288217 important safety instructions Setup

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 FIG. 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).

Slot

Tip Locating Tab TI6847A

FIG. 7

Setup

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 FIG. 8.

TI6558A

FIG. 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 FIG. 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.

Horizontal

Air Cap Position

(standard)

Vertical
Air Cap Position	TI6847A

FIG. 9

311052E 11