7.1 cOnTrOl uniT
To access the main board it is necessary to:
1 Remove the right, side panel.
2 Disconnect the electrical connections using
the pliers.
3 Unscrew the two screws “A” with a Phillips
screwdriver and remove the board support
with the board inside.
4 Loosen the board locking screws “B” on the
support using a Phillips screwdriver.
The control unit without connections appears as
shown in the figure.
1 Serial port
2 Keyboard serial port
3 Sensor connectors:
3a level
3b pressure
3c negative pole
4 Power supply:
4a negative pole
4b pulses
4c power supply
5 Connectors:
5a Pressure switch
5b heating element
5c pump
5d steam / H2O
6 Connectors:
6a delivery electrovalve
6b level electrovalve
6c neutral
6d phase
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