Electrolux COMPACT MIDI + EDW 500, Service Manual

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Spares Operation - R.Kurzke 02/05 599 521 951 EN
Water Softening
The components required for water softening.
1.
softener unit
2. regeneration dosage chamber
The incoming water flows through the softener which works
according to the ion exchange principle. The ion exchanger is
filled with small epoxy resin balls. The resins exchange the
hardness constituents (calcium and magnesium), for sodium
ions.
When all the sodium ions are used up, it is necessary to
regenerate the softener. This is done by flushing a brine solution
through the softener.
Afterwards the softener is washed out with fresh water and is
now fully effective.
Depending on the water hardness, regeneration is only necessary
after several wash cycles.
The softening system is designed for a water hardness of up to
50 °dH.
With the coil switched off, the rinse-aid flows from
compartment 2 into compartment 3.
During the rinse cycle, the coil is always switched on
twice. When it is switched on the second time, the
remaining rinse-aid flows into the rinse tank.
coil on
o f f
time
coil on
o f f
time