HP GRACO OR PRO TI1681A Clean the Air Cap and Fluid Nozzle, Grease Door Latch Threads, Procedure

Clean the Air Cap and Fluid Nozzle

Equipment Needed

•soft bristle brush

•non-flammable solvent

Procedure

1. Turn the ES ON/OFF valve OFF. Wait 30 seconds.

I ES O

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2.Discharge the system voltage (page 20).

3.Relieve the pressure (page 20).

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Maintenance

5.Clean the air cap (9) with the soft bristle brush and non-flammable solvent or submerge the air cap in solvent and wipe it clean.

6.With the gun pointing down, clean the fluid nozzle

(7) and the front of the gun with a soft brush damp-

ened with non-flammable solvent.

If it appears that there is paint inside the fluid nozzle (7) air passages, remove the gun from the line for servicing.

7.Carefully install the air cap (9). Be sure to insert the electrode (29) through the center hole of the air cap. Rotate the air cap to the desired position.

8.Tighten the retaining ring (27) until the air cap is held firmly in place; you should not be able to rotate the air cap horns by hand.

9.Test gun resistance, page 30.

7

29

9

27

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4.Remove the retaining ring (27) and air cap (9). See FIG. 16..

Fig. 16. Clean Air Cap and Fluid Nozzle

CAUTION

Do not use metal tools to clean the air cap or fluid nozzle holes as this could scratch them, and make sure the electrode is not damaged.

Scratches in the air cap or nozzle or a damaged electrode can distort the spray pattern.

Grease Door Latch Threads

Inspect the door T-handle locking screw regularly, to ensure the threads are well greased. Apply silicone-free grease to the threads when necessary.

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