Regeneration System; Resin Washing; Regeneration Levels - Electrolux DIVA 60 cm Service Manual

7.9 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 "add 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 the triac (connector
F1-F3 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 H1-H3 on the board.
If there is no salt in the machine, the contact closes and lights up the
relative LED (on the display board).

7.10 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

7.11 Regeneration levels

The count for "as needed" execution of the regeneration cycle is made by the electronic control
system based on the duration of the fill phases and thus on the quantity of water loaded (and not on the
number of cycles run).
The adjustment is made over 10 levels. If level [1] is selected, regeneration is not performed and the
salt LED does not light.
Table of regeneration values
Level
1
2
3
4
* 5
6
7
8
9
10
Water fill between
regeneration
procedures
litres
- - -
130
94
70
53
37
20
15
10
3
* "5" = Level set at factory
Time Position of
regeneration fill tank
solenoid opens selector
sec
0
240
240
240
240
240
240
240
240
2x240
Position of tank selector = "2"
27
Hardness of water
treated
no. º F (TH) º D (dH)
1 < 7 < 4
1 7 > 18 4 > 10
1 19 > 25 11 > 14
1 26 > 32 15 > 18
2 33 > 39 19 > 22
2 40 > 50 23 > 28
2 51 > 64 29 > 36
2 65 > 75 37 > 42
2 76 > 90 43 > 50
2 91 > 125 51 > 70