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5.3 Power feed and selection of programmes
The main board is powered up when power
button (PU) contacts 1-5 and 2-4 are closed. The
connectors involved are A2 (neutral) and B1
(line).
The control/display board (user interface) is
powered by 5V supplied by the main board, so
programmes can be selected when the main
board is turned on.
When the door is closed, the main board detects
the closed contacts on switch (IP) between
connectors
B2-D1
programme. The same switch supplies power to
the electrical components.
When the door is opened, power is shut off to the
various loads and the cycle is paused.
5.4 Fill circuit
5.4.1
Pressure switches on fill level and anti-overflow system
The level of water during filling is controlled by level pressure switch (A)
•
The anti-overflow pressure switch (B) makes sure that the level of
water during filling does not exceed the safety threshold (overflow
through the door).
5.4.2
Filling system
The fill solenoid is powered by triac
TY2 on the circuit board (connector C7) through
the door switch (IP) and the anti-flooding
microswitch (DA).
The water level in the sump is
controlled by pressure switch (RL). The circuit
board constantly monitors the status of the
pressure switch through the "sensing" line
connected to connector C5:
"EMPTY" if contacts 1-2 are closed
"FULL" if contacts 1-3 are closed
5.4.3
Anti-flooding device
When the anti-flooding device is tripped, contacts (DA) on the relative microswitch open and cut off
power to the solenoid.
SOI/TD - PR
and
starts
the
wash
21
B
A
599 35 94-03
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