Electrolux COMPACT MIDI + EDW 500, Service Manual

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Spares Operation - R.Kurzke 02/05 599 521 951 EN
10. Regeneration
The water chamber for regeneration contains 230 ml water. During regeneration, the regeneration valve
is energized. The 230 ml water runs into the salt container and mixes with the salt to form a brine
solution.
In the top of the salt container there is an opening with a small filter, from here the brine solution enters
the softener where the resins are regenerated.
Regeneration of the water softening system, which takes around 4 min, is usually performed at the start
of the drying phase.
Every time regeneration is performed (with activation of regeneration solenoid 4), the accumulation
chamber is completely emptied of its contents (about 230 cc of water). Regeneration is controlled by the
electronic control system “Ad Hoc”, i.e. not at each washing cycle, but rather at intervals determined by
the level of regeneration selected:
- If level [1] is selected, regeneration is never performed and the SALT LED (if featured) always remains
unlit.
- If level [10] is selected, regeneration is performed twice during each cycle; first at the end of the
washing phase, and then at the beginning of the drying phase.
The regeneration solenoid is powered on the main board and by the contacts of the door switch.
Some models may feature a salt sensor, whose Reed contact is connected to the board.
When there is no salt, the contact closes and the relative LED lights up (on display board).