Pressure Control; Control Board - Graco G-Max 7900 Instructions Manual

Pressure Control

Pressure Control

Control Board

NOTE: All Steps refer to F
309
(Ref)
Red (+)
Violet
304
(Ref)
F . 20
IG
Removal
1. Relieve pressure, page 6.
2. Remove five screws (307) and cover (322).
3. Disconnect at control board (302):
• Four clutch leads: two violet and two black.
• Lead (D) from potentiometer.
• Lead (E) from transducer.
• Two red leads (A) to ON/OFF switch (309).
4. Remove five screws (303), green ground wire and
control board (302).
18
. 20.
IG
Green
Black
Red
A
D
E
302
(Ref)
Installation
When installing replacement control board, follow
instructions with control board to set model type.
1. Install green ground wire and control board (302)
with five screws (303).
2. Connect to control board (302):
• Two red leads (A) to ON/OFF switch (309).
• Lead (E) to transducer.
• Lead (D) to potentiometer.
• Four clutch leads: two violet and two black.
3. Fig. 16. Install cover (322) with five screws (307).
310
(Ref)
Potentiometer
Pressure
transducer
318z 318aa
(Ref) (Ref)
308870G