Electrolux Diva Service Manual page 28

6.5.3 WASHING THE RESINS
On completion of the regeneration process, it is necessary to clean the softening circuit by washing
the resins in order to remove any residual impurities.
The water in the resin reservoir (9), which contains alkaline salts (calcium and magnesium) and
sodium chloride, must be cleaned before the subsequent fill phase in order to ensure that it does not
come into contact with the dishes or the internal parts of the appliance, since it is corrosive.
In this case, too, the fill solenoid and the drain pump switch on simultaneously at a certain point in the
cycle and for a pre-determined period, to circulate a quantity of water (about 2 litres) which flushes the
softening circuit.
6.5.3.1 RESIN WASHING CIRCUIT
During this phase, the two functions (fill and drain) are performed simultaneously.
Fill solenoid [2/3]
When the solenoid is energized, water is circulated through the resin reservoir (9) and from there to
the sump (the circuit described in sections 4.1/4.2 "Path of the fill water" is repeated).
Drain pump [15]
When the drain pump is switched on, the water ducted to the bottom of the sump (12) is immediately
drained as it arrives, without coming into contact with the dishes.
6.5.3.2 RESIN WASHING PROCEDURE
In all versions of the dishwasher (electromechanical and electronic), the resin washing procedure
(duration 30 seconds approx.) is performed at the beginning of each washing cycle.
- In effect, the salty water solution (regeneration water) remains deposited in the resin reservoir
from the end of the last cycle until the beginning of the subsequent cycle.
SOI/TD - PR 28/32 599 38 72-30