DW 950 / 951 / 952 / 95C
WATER SOFTENING
The water softener operates as follows:
During rinse, pre-wash and main wash:
1. Inlet valve 1 opens and admits water.
2. The water flows
• through hose 3 to air-brek device, no 1
• passes an airgap
• leaves the air-break device through no. 3
• passes hose 7 to the resin container of the softe-
ner, no 3.
There the water is softened and the soft water flows
• out through no. 4
• through hose 8 back to the air-break device no. 4
• enters the machine through no. 6.
1 Inlet valve 1
2. Inlet valve 2 (regener ation valve)
3. Hose IV1 - air-break device
4. Hose IV2 - air-break device
5. Air-break device
6. Inlet opening
7. Hose air-break device no. 3- resin
container no. 3
8. Hose air-break device no. 4 – resin
container no. 4
9. Hose air-break device no. 5 - salt
container no. 5
10. Salt container
11. Resin container
Hard water, containing lime,
Ca(HCO
3
)
2
flows into the resin
container. The Ca ions are
replaced by Na. Soft water,
containing Na(HCO
3
) flows
into the machine.
Regeneration during the main wash:
3. When the machine has admitted water, as described above, for the main wash, inlet
valve 2 opens for 20,30 or 50 seconds, depending on the setting. The water flows
through hose 4 to the air-break device 5, on through hose 9 and into salt container no. 5.
The salt-saturated water flows into the resin container, where it regenerates the resin, so
that it can soften further water.
Ca
Na(HCO )
3
Na
Ca(HCO )
3
2
Resin container
1
3
4
2
5
7
8
6
9
10
11
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