Pressure Adjust Potentiometer - Graco G-Max 7900 Instructions Manual

Pressure Control

Pressure Adjust Potentiometer

NOTE: All Steps refer to F
303
307
322
F . 22
IG
Removal
1. Relieve pressure, page 6.
2. Remove five screws (307) and cover (322).
3. Disconnect lead (D) from control board (302).
4. Loosen set screws on potentiometer knob (313) and
remove knob, shaft nut, lockwasher (310) and pres-
sure adjust potentiometer (310).
5. Remove seal (311) from potentiometer (310)
20
. 22.
IG
1
309 A
302
D
E
1
Locate switch terminals as shown
Installation
1. Install seal (311) on potentiometer (310).
2. Install pressure adjust potentiometer (310), shaft
nut, lock washer (310) and potentiometer knob
(313).
a. Turn potentiometer shaft (310) clockwise to
internal stop. Assemble potentiometer knob
(313) to strike pin on plate (312).
b. After adjustment of step a., tighten both set
screws in knob 1/4 to 3/8 turn after contact with
shaft.
3. Connect lead (D) to control board (302).
4. Install cover (322) with five screws (307).
313
310
315 319
318z
318aa
318a
308870G