Graco LineLazer IV 5900 - Pressure Control; Control Board; Installation; Pressure Control Transducer

Pressure Control
18 311020Y
Pressure Control
Control Board
Removal
1 Relieve pressure, page 7.
2 Fig.13. Remove two screws (125) and control cover
(31). Pull display connector wings open on PC
board and pull display connector out.
3 Fig. 13 and 21. Note on a paper lead connections to
the control board. Disconnect leads from control
board (15d).
4 Fig. 13. Remove four screws (15j) from control
board (15d).
Installation
1 Fig. 13. Install control board (15d) with four screws
(15j).
2 Fig. 13 and 21. Refer to note on lead connections to
the control board. Connect leads to control board
(15d).
3 Fig. 13. Push display connector into PC board close
display connector wings on PC board. Install control
cover (31) with two screws (125).
Pressure Control Transducer
Removal
1 Relieve pressure, page 7.
2 Fig. 13. Remove two screws (125) and control cover
(31).
3 Disconnect transducer lead (C) from control board
(15d).
4 Remove pressure control transducer (216) and
o-ring (217) from filter manifold (40).
Installation
1 Fig. 13. Install o-ring (217) and pressure control
transducer (216) in filter manifold (40). Torque to
35-45 ft-lb.
2 Connect transducer lead (C) to control board (15d).
3 Install control cover (31) with two screws (125).
Pressure Adjust Potentiometer
Removal
1 Relieve pressure, page 7.
2 Fig. 13. Remove two screws (125) and control cover
(31).
3 Disconnect lead (D) from control board (15d).
4 Loosen set screws on potentiometer knob (15o) and
remove knob, shaft nut, lock-washer and pressure
adjust potentiometer (15i).
5 Remove seal (15n) from potentiometer (15i).
Installation
1 Install seal (15n) on potentiometer (15i).
2 Fig. 13. Install pressure adjust potentiometer (15i),
shaft nut, lock-washer and potentiometer knob
(15o).
a. Turn potentiometer shaft (15i) clockwise to
internal stop. Assemble potentiometer knob
(15o) to strike pin on plate (15r).
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 (15d).
4 Install control cover (31) with two screws (125).