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6.12 Regeneration system
Regeneration of the softening system, whose duration is approximately
4 minutes, is normally performed at the beginning of the drying phase.
Each time regeneration is performed (the regeneration solenoid 4 is
energized), the chamber is completely emptied (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 (ER) is powered by
triac TY1 (connector C9 on the circuit board)
and by the contacts of the ON/OFF switch (PU)
and the door switch (IP).
Some models feature a salt sensor whose reed
contact (SS) is connected to connectors F1-F2
on the circuit board.
The absence of salt causes the contact to
close, which lights the corresponding LED (on
the display board).
6.13 Resin washing
Washing of the resins contained in the softening system is performed at the beginning of each washing
cycle. In practise, the solution of salty water (regeneration water) remains deposited in the resin container
from the end of the last completed cycle until the subsequent cycle.
If the regeneration level is set to [10], washing of the resins is performed once at the beginning of the
washing cycle and then again immediately after the regeneration process performed at the end of the
washing phase.
The regeneration sequence is as follows:
a. Drain (30 seconds)
b. Water fill to correct level
c. Drain (10 seconds)
d. Water fill (15 seconds)
e. Complete drain
SOI/TD - PR
23
599 36 01-86
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