Pressure Control; Control Board; Pressure Control Transducer - Graco A Series Instructions-Parts List Manual

Pressure Control

Pressure Control

Control Board

Removal
1. Relieve pressure; page 7.
2. Fig. 6. Remove four screws (93) and display/cover
(139). Pull display connector wings open on PC
board and pull display connector out.
3. Fig. 14. Disconnect at control board (109):
• Lead (D) from potentiometer.
• Lead (E) from transducer.
• Remove ON/OFF switch (24) connector (A).
4. Fig. 6. Remove six screws (214) from control board
(109) and green ground wire.
5. Remove two connectors (Y) at backside of
pres¬sure control. Remove jam nuts (Z) and control
board (109).
Installation
When installing replacement control board, follow
instructions with control board to set model type.
1. Fig. 6. Install control board (109) and jam nuts (Z).
Install two connectors (Y) at backside of pressure
control.
2. Install green ground wire and control board (109)
with six screws (214).
3. Fig. 14. Connect to control board (109):
• Connect ON/OFF switch (24) connector (A).
• Lead (E) to transducer.
• Lead (D) to potentiometer.
4. Fig. 6. Push display connector into PC board close
display connector wings on PC board. Install dis-
play/cover (139) with four screws (93).
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Pressure Control Transducer

Removal
1. Relieve pressure; page 7.
2. Fig. 6. Remove four screws (93) and display/cover
(139).
3. Disconnect lead (E) from control board (109).
4. Remove two screws (201) that connect control
housing (108) to filter housing (200e). From inside
of control box, pull transducer connector through
control housing (108).
5. Remove pressure control transducer (200p) and
o-ring (200r) from filter housing (200e).
Installation
1. Fig. 6. Install o-ring (200r) and pressure control
transducer (200p) in filter housing (200e). Torque to
30 36 ft-lb.
2. Install transducer cable through control box. Install
filter housing and spacer to control box with two
screws (201).
3. Connect lead (E) to motor control board (109).
4. Install display/cover (139) with four screws (93).
309414N