Regeneration System; Resin Washing; Blending" Function - Electrolux DIVA 45-60-BIG Service Manual

7.12 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 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 connectors D9-C1 on the main board and by the contacts
of the door switch (IP).
Some models may feature a salt sensor, whose Reed contact (SS) is connected to G1-G2 connectors of
the board.
When there is no salt, the contact closes and the relative LED lights up (on display board).

7.13 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

7.14 Blending" function

This function is performed inside the fill tank during the water fill phase which, depending on the
position of the selector, automatically blends the softened water with the unsoftened water present in the
appliance.
In practice, the softened water is introduced into the appliance through the softening system, while
the unsoftened water flows via an open by-pass duct directly through the steam venting ring.
If the level of regeneration is set to between 1 and 4, it is advisable to activate the BLENDING
function to mix softened water with unsoftened water.
This function optimizes the consumption of salt thus preventing the possibility of corrosion of glass recipients
due to excessively soft water.
When the BLENDING function is activated, the percentage of unsoftened
water introduced into the dishwasher is 15%.
The BLENDING function is activated using the selector knob located inside the tub, on the left side, in the
vicinity of the steam venting grille:
Position of selector
pos. 1 = blending enabled.
pos. 2 = blending disabled.
SOI/TD 2005-2 PR 15 /26 599 36 83-66