Pressure Control Board, Removal, Installation

Pressure Control Board

100 - 120 Vac North American and Japan/Taiwan Motor Control Board

Removal

Relieve pressure; page 9. Wait 5 minutes before servicing.

1.Remove four screws (38) and cover (96).

2.Disconnect display connector (A) from motor control board.

3.Remove bottom two screws (39) and allow control panel (68) to hang down freely.

4.Disconnect control board power lead(s) (D) from ON/OFF switch (33) and motor control board (52).

5.Disconnect potentiometer connector (C) from motor control board.

6.Disconnect WatchDog (49) switch connector

(X)from motor control board.

7.Disconnect 15/20A switch (178) (1595 model only).

8.Disconnect transducer connector (E) from motor control board.

9.Disconnect motor connectors (F, G, and H) from motor control board.

10.Remove motor shroud. Disconnect and remove wiring from baffle.

11.Remove nut and screw (88) and disconnect ground wire (87). Disconnect coil connector

(Y).Remove coil (81).

12.Remove top two screws (39) and control box (61).

13.Remove six screws (27), two screws (102) and control board.

14.Remove five screws (27), three screws (102) and motor control board.

Installation

1.Apply small amount of thermal compound 15U114 or 110009 (5) to shaded component areas on rear of motor control board (52).

CAUTION

To reduce risk of motor control board failure, do not overtighten screws (102) which can damage the electric components.

2.Install five screws (27), three screws (102) and motor control board.

3.Install motor control board (52) with five screws (27). Torque to 9-11 in-lb (1.02 - 1.24 N•m). Install and torque three screws (102) to values in illustration.

4.Connect motor connectors, (F, G and H) to motor control board.

5.Reconnect and install wiring in baffle. Install motor shroud.

6.Install control box (61) with top two screws (39).

7.Install coil (81) and tighten screw and nut (88). Tighten ground wire screw (87) and coil connector (Y).

8.Connect transducer connector (E) to motor control board.

9.Connect 15/20A switch (178) (1595 model only).

10.Connect motor control board power lead(s) (D) to ON/OFF switch (33).

11.Connect WatchDog (49) switch connector (X) to motor control board.

12.Connect potentiometer connector (C) to motor control board.

13.Install control panel (68) with two screws (39).

14.Connect display connector (A) to motor control board.

15.Install cover (96) with four screws (38).

311365G