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8. PCB – Removal and Installation
The following procedure can be applied for replacing the PCB.
Warning! Before proceeding turn off the electrical and water supplies. The electricity
supply must be turned off at the mains and, if applicable, the appropriate circuit fuse
removed. Mains electrical connections are exposed when the cover is removed.
Caution! Disconnect wiring by pulling only on the body of the spade connector and not
the wire itself.
8.1.
Remove the front cover as detailed in "Front Cover – Removal and
Installation".
8.2.
Disconnect the cover electrical
connection at the PCB.
8.3.
Make a note of the wiring layout
and connections from the PCB.
8.4.
Disconnect the wiring connections
to the solenoid coil.
8.5.
Unscrew the screw securing the
solenoid valve clamp bracket with
a T10 Torx screwdriver and remove
the bracket.
8.6.
Disconnect the wiring connections
to the motor.
Note! Lift up the front of the
mounting block and tilt forward the
motor/pump assembly to access
the rear motor terminal.
8.7.
Disconnect the electrical supply
cable from the terminal block.
8.8.
Unscrew the Torx T10 screw
securing the PCB in the case and
remove the PCB.
Caution! Ensure that the green
earth wire is connected to the
motor when refitting the wiring
connections.
8.9.
Fit the replacement PCB and refit
the electrical connections in
reverse order. Ensure that the
electrical wires are installed as in
the original layout.
PCB
Front
Cover
Connector
Motor
Wiring
Connection
Solenoid
Wiring
Connections
Motor
Wiring
Connection
Earth
Connection
to Motor
37
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