Graco EFR Instructions-Parts List Manual page 18

Electric fixed-ratio proportioner
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Setup
Change Driver and Yoke Position
There are specific driver positions for each mix ratio set-
ting. To adjust the position of the electric driver:
1. Turn the power disconnect switch (C) to the OFF
position.
2. Perform the Pressure Relief Procedure on page
20.
3. Loosen the four screws and remove the pump yoke
shroud (F).
F
4. Place a wrench on the adapter rod (DA), then use
the supplied tool (DT) to loosen the serrated yoke
nut (DB) above the yoke (DC).
DC
DT
18
Screws
DB
DA
5. Loosen the three nuts (D2) below the driver tie rods.
D2
DC
6. Grab the output shaft and slide the position of the
driver until the indicator lines are aligned with your
ratio.
NOTICE
Do not hit tie rods (DD) with a steel hammer. Dam-
age to the electric driver base may result.
7. Tighten the three nuts (D2) and yoke nut (DB).
8. Use the supplied tool (DT) to tighten the yoke nut,
then install the pump yoke shroud (F).
piston
DB
rod
DD
3A6165J

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