SOI/DT 2003 - 01 eb 18 599 35 63-72
6.4 Fill circuit
6.4.1 Level and anti-overflow pressure switch
• The level of water introduced into the appliance is determined by
the level pressure switch (A)
• The anti-overflow pressure switch (B) ensures that the level of
water does not exceed the safety threshold (causing overflow from
the door).
6.4.2 Fill system
The water fill solenoid valve is powered by triac
TY2 on the electronic board (connector C7), by
the door switch (IP) and by the anti-flooding
microswitch (DA).
The level of water in the sump is monitored by
the pressure switch (RL). The electronic board
constantly monitors the status of the pressure
switch via a “sensing” line connected to
connector C5:
EMPTY if the contacts are closed on 1-2
FULL if the contacts are closed on 1-3
6.4.3 Anti-flooding device
Intervention of the anti-flooding device causes the contacts of the microswitch (DA) to open, thus
disconnecting the solenoid valve from the power supply.
6.4.4 Intervention of the anti-overflow system
If the anti-overflow pressure switch (PA) should
intervene, the closure of the contact on FULL
(1-3) powers the drain pump (PS). The pump
remains in operation until the contact returns to
EMPTY (1-2).
If the door is opened or the appliance
is switched off, the drain pump is
disactivated.
B
A
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