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Control Board
Removal
1. Relieve pressure, page 6.
2. F
. 15. Remove four screws (24) and cover (22).
IG
3. Disconnect at control board (21):
•
Lead (D) from potentiometer
•
Lead (E) from transducer
•
Remove ON/OFF switch (48) connector (B)
4. Remove six screws (119) from control board (21)
and green ground wire.
5. Remove pinion housing connector (85) at backside
of pressure control. Remove jam nut (21a) and con-
trol board (21).
Installation
When installing replacement control board, follow
instructions with control board to set model type.
1. F
. 15. Install control board (21) and jam nut (21a).
IG
Install pinion housing connector (85) at backside of
pressure control. Ensure locking ring fully detends
on connector.
2. Install green ground wire and control board (21) with
six screws (119).
3. Connect to control board (21):
•
Connect ON/OFF switch (48) connector (B)
•
Lead (E) to transducer
•
Lead (D) to potentiometer
311207C
Pressure Control
Pressure Control Transducer
Removal
1. Relieve pressure, page 6.
2. F
3. Disconnect Lead (E) from control board (21).
4. Remove two screws (152) and transducer guard
5. Remove pressure control transducer (49) and o-ring
Installation
1. F
2. Install transducer connector and rubber grommet
3. Connect lead (E) to motor control board (21).
4. Install display (22) with four screws (24).
Pressure Adjust Potentiometer
Removal
1. Relieve pressure, page 6.
. 15. Remove four screws (24) and cover (22).
IG
(151) from control housing (11). Pull transducer
connector through rubber grommet (138).
(51) from filter housing (54).
. 15. Install o-ring (51) and pressure control
IG
transducer (49) in filter housing (54). torque to 30-36
ft-lb.
(138) in control housing (11). Install transducer
guard (151) on control housing with two screws
(152).
Pressure Control
17
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