MAINTENANCE

To Clean or Change Air Cap and Fluid Nozzle

CAUTION

Do not use metal tools to clean the air cap holes as this may scratch them, and make sure the elec- trode wire is not damaged. Scratches in the air cap holes or a damaged electrode wire can distort the spray pattern.

Equipment needed:

Soft bristle brush (supplied). Fluid nozzle wrench (supplied).

Solvent compatible with fluid being sprayed.

Procedure:

1.Follow the Pressure Relief Procedure Warning on page 9.

2.Remove the air cap assembly (BB). See Fig 6.

3.Turn the locking pin (81) to the unlocked position.

4.Squeeze the gun trigger and remove the fluid nozzle

(15)with the fluid nozzle wrench (66g) supplied. Make sure the front of the gun is pointed down. See Fig 6.

5.Use the soft bristle brush (66a) supplied and solvent to clean the air cap, fluid nozzle, and front part of the gun.

6.Squeeze the gun trigger and screw the fluid nozzle back into the gun. Tighten the nozzle securely with the wrench (66g) supplied. Torque the fluid nozzle to 1.1±1.4 NSm (10±12 in±lb). See Fig 6. Turn the lock- ing pin to the locked position.

7.Carefully reinstall the air cap assembly. Avoid bend- ing the electrode (CC).

8.Tighten the retaining nut so it is snug. If the nut is tight enough, you will feel resistance when turning the air cap. If too tight, the spray pattern will be distorted.

KEY

15 Fluid Nozzle

BB

BBAir Cap Assembly

81 Locking Pin

DETAILDETAIL

15

Locked

Unlocked

Position

Position

 

8181

Fig 5

KEY

CCElectrode

15 Fluid Nozzle

16 Air Cap Assembly

66g Wrench

16 CC

15

Torque to 1.1±1.4 NSm (10±12 in±lb)

66g

Fig 6

 

Page 12
Image 12
Graco Inc 307-712, PRO 5000, 218-745 manual To Clean or Change Air Cap and Fluid Nozzle, Equipment needed