Graco Inc 308-236, 237-695, 236-531, 238-966 How to Use the Gun, How to Adjust the Spray Pattern

Installation/Operation

How to Use the Gun

1.Connect a grounded fluid hose to the gun inlet. See Fig. 2.

2.With no tip installed, start the pump. Flush the pump according to the instructions supplied with it. Prime the system with the fluid.

7.If adjusting the pressure does not give a good spray pattern, follow the Pressure Relief Proce- dure on page 5 and then try another tip size.

8.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. Don't swing the gun in an arc. Practice to find the best length and speed of stroke.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 5.

3.Relieve the pressure. Be sure the gun trigger safety is locked. See Fig. 1.

4.Models 235±460, 235±461, and 235±462: screw the tip guard (1) and install the tip (A) and the gasket (2d) in the nut of the tip guard. Screw the assembly firmly onto the gun. Tighten the assem- bly with a wrench. See Fig. 2.

NOTE: If the gasket (2d) is not installed, the gun will leak.

5.Models 235±463, 235±464, 238±591, 236±531 and 238±966: install the SwitchTip (16) and the tip guard (17). See manual 308±644 or 307±991, supplied.

How to Adjust the Spray Pattern

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 5.

1.Relieve the pressure. Loosen the retaining nut

(B).Turn the tip guard so the groove in the tip is horizontal (C) for a horizontal pattern and vertical

(A)for a vertical pattern. Tighten the retaining nut. See Fig. 3.

2.The orifice of the spray tip and the angle of the spray pattern determines the coverage and the size of the pattern. When more coverage is needed, use a larger spray tip rather than increasing the fluid pressure.

CAUTION

The openings in the tip guard reduce paint buildup on the tip guard while spraying. Any damage to the sharp edges of the openings causes paint to collect at that area. Never hang the gun by the tip guard.

1

Fig. 2

A

2d

16

17

01473

KEY

ATip guard shown in position for vertical spray pattern

BRetaining nut

CTip guard shown in position for horizontal spray pattern

B

A

C

6. Start the pump. Adjust the fluid pressure until the	01472A
spray is completely atomized. Use the lowest
pressure necessary to get the desired results.	7658A
Higher pressure may not improve the spray pattern

and will cause premature tip wear and pump wear. Fig. 3