Graco 311320H Air Cap Adjustment Valve, Adjust Felt Wiper, Clean Felt Wiper, Open Close

Operation Basics

Air Cap Adjustment Valve

Use to control amount of air that passes through air cap and over mixing chamber tip. Airflow helps keep tip free of sprayed chemical. Too much air may distort spray pattern and create overspread. Too little air will not prop- erly clean end of valving rod.

To OPEN valve, turn knob approximately 1/8 turn counterclockwise.

To CLOSE valve, turn knob fully clockwise.

3.Use 5/16 in. open-end wrench to tighten retainer another half turn.

FIG. 8: Felt Wiper

Open

Close

FIG. 7: Air Valve Adjustment

Felt Wiper

Adjust Felt Wiper

1.Use 5/16 in. open-end wrench to loosen retainer slightly.

2.Slowly tighten it by hand until it seats against rear packings in mixing chamber.

Clean Felt Wiper

1.Insert nozzle of flush can into holes of felt wiper.

2.Saturate felt with gun cleaner.

10 311320H