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DGS-TDS-N07.2003 C.D. 599 51 74-13 EN
7.3 Water fill system
The solenoid valves are powered by the PCB via two triacs. The status of the pressure switch (empty/
full) is detected by two sensing lines.
Phase A: The phase during which the initial fill takes place:
1. Water fill until the anti-boiling pressure switch closes on FULL.
2. Water fill until the 1st level pressure switch closes on FULL: the delivery of the solenoid is
calculated during this phase.
3. Water fill for time Q, which varies according to delivery and cycle phase.
Phase B:
If the 1st level pressure switch returns to EMPTY, a supplementary fill is performed until the
pressure switch returns to close on FULL. This phase may be followed by a further timer-controlled
fill.
7.4 Anti-flooding-device
The third pressure switch level is used as an anti-flooding safety device: if the pressure switch
contact should close in the FULL position, the PCB actions the drain pump until the pressure switch
returns to the EMPTY position.
AB-sensing
Level 1-sensing
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