Graco 3A0420T important safety instructions Check Motor Position, Change Motor Position

Setup

Motor Position

The motor position must be set for the volume mix ratio of the system.

NOTE: Changing the motor position does not change the mix ratio.

Check Motor Position

1.Verify that the correct pumps are mounted for your mix ratio by volume. See chart in Bare Proportion- ing Pump Packages on page 13.

indicator line

	indicator line
Air Motor shown	r_258914_3a0420a_10b
FIG. 6: Ratio indicators

2.Verify that the motor position is adjusted correctly

for that mix ratio. See FIG. 6. If not, perform the fol- lowing Change Motor Position procedure.

Change Motor Position

There are specific motor positions for each mix ratio set- ting. To adjust the position of the air motor:

1.Perform Check Motor Position procedure. If posi- tion is incorrect, continue to next step.

2.Loosen the eight fasteners and remove the two pump guards.

Air Motor shown

fastener

pump guard

fastener

pump guard

r_258914_3a0420a_4a-1

3.Place wrench on adapter rod (104) then use sup- plied tool to loosen the serrated yoke nut (V) above the yoke (T).

104 Air Motor shown

V

T

r_571101_3a0420a_2a-2

4. Loosen the three nuts (P2) below the motor tie rods.

E

piston rod

V

P2

T

r_258914_3a0420a_5a

Air Motor shown

FIG. 7

5.Grab the piston rod and slide the position of the motor (E) until the indicator lines are aligned with your ratio. See FIG. 6 and FIG. 7.

NOTICE

Do not hit tie rods (P) with a steel hammer. Damage to the air motor base may result.

6.Tighten the three nuts (P2) and yoke nut (V).

7.Use supplied tool to tighten the yoke nut.

8.Install the pump guards.

20 3A0420T