Graco 334135B important safety instructions Prime the Dispense Head, Prime Dispense Head

Setup

Prime the Dispense Head

NOTICE

If the dispense head is not primed, chemical cross- over may occur resulting in cured material in the dis- pense head, hoses, and/or pumps.

1.Remove static mixer from the dispense head if installed.

2.Turn snuff-back adjustment knob fully clockwise. This will prevent the dispense valve from closing between priming shots.

3.Use a 4 mm hex key to loosen the screws holding the dispense head in place.

ti12391a

FIG. 5: Prime Dispense Head

4.Rotate or remove the dispense head so the tip is above the fluid input hoses.

5.Use a 4 mm hex key to tighten screws holding dis- pense head in place if applicable.

6.Route the fluid hoses connected to the dispense head so they are always below the dispense head. This ensures any air in the hoses will travel to the dispense head.

7.Navigate to the Shot Mode Screen or Operator Mode Screen.

8.Ensure there is a sufficient amount of material in the tanks.

9.Select a large size shot.

10.Hold a waste container at the end of the dispense head and press the Dispense Request button

( ) or the footswitch.

11.Repeat the previous step until no air comes out of the dispense valve.

12.If phasing adjustments and ratio checking are not required, use the following procedure to attach the static mixer.

a.Attach the static mixer with the dispense head pointed up.

b.Hold waste container at end of dispense head

and press the Dispense Request button () or the footswitch.

c.Repeat the previous steps until static mixer has been purged of air.

13.Use a 4 mm hex key to loosen screws holding dis- pense head in place.

14.Rotate dispense head back to normal dispensing position.

15.Use a 4 mm hex key to tighten the screws holding the dispense head in place.

16.Adjust snuff back to proper setting for operation. See Adjust Dispense Valve Snuff Back on page 31.

28 334135B