SOI/DT 2002-07 eb
34
599 35 36-69
6.8 Drain pump
1. PCB
2. Anti-boiling pressure switch
8. Drain pump
AB_S Anti-boiling level sensor
The PCB powers the drain pump via a triac as follows:
- for a pre-determined period
- until the anti-boiling pressure switch closes on EMPTY, after which the pump is actioned for a brief
period or passes to the subsequent phase
6.9 Anti-overflow 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.
