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5.11 Regeneration system
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 not carried out at every washing cycle, but at intervals that are determined by the
programmed regeneration level:
If regeneration level [1] is selected (no regeneration), regeneration is never performed and the
"SALT" LED does not light up
If regeneration level [10] is selected, regeneration is performed twice every cycle: at the end of the
washing phase and at the beginning of the drying phase.
The regeneration solenoid (ER) is powered by triac TY1 (connector C9 on the main board) through
the start button (PU) and the door switch (IP).
Some models may be equipped with a salt sensor, whose reed switch (SS) is connected to
connectors F1-F2 on the board.
If there is no salt in the machine, the contact closes and lights up the relative LED (on the display
board).
5.12 Resin washing
The resins in the water softening system are washed at the beginning of every washing cycle. Salt
water solution (regeneration water) remains in the resin container from the time the cycle is completed until
the time next cycle is carried out.
If regeneration level [10] is selected, resin washing is carried out twice every cycle: at the beginning
of the washing cycle and immediately after the regeneration procedure performed at the end of the final
washing phase.
The sequence of phases is as follows:
a. Drainage for 30 seconds
b. Water fill to normal level
c. Water draining for 10 sec.
d. Water filling for 15 sec.
e. Complete draining
SOI/TD - PR
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599 35 94-03
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