SOI/DT 2005-01 dmm
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9.4 Anti-flooding device
1. PCB
8. Drain
pump
9. Anti-overflow pressure switch
HV1_S Anti-overflow level sensor
The third pressure switch level (if featured) is used as an anti-overflow
safety device: if the pressure switch
contact should open in the FULL position, the PCB actions the drain pump until the pressure switch returns
to the EMPTY position.
9.5 Power supply and programme selection
The main board (3) is powered by the
interference suppressor (1) and by the
closure of the contacts of the main switch
(2). The affected connectors are J6-2
(neutral) and J10-1 (line).
The control/display board (4) is powered at
5V by the main board: through the
programme selector (5) it is possible to
select the programme. The selection of the
options / start is performed through the
board buttons (4).
The buzzer (if featured) (6) is powered by
the display board.