Technical Information
38
G 600/G 800
Figure 4-15:
Water Softener
Incoming water flows through the intake assembly and into the ion exchanger. When
the water flows through the softener, the calcium and magnesium ions are
exchanged for sodium ions, which soften the water. The softened water flows into
the cabinet via a port in the sump.
4.17.1
Reactivation
The electronic activates the softener valve (Y38/1) and water from the water intake
assembly flows into the salt container, where it dissolves a quantity of salt to become
a brine mixture.
The saturation point, above which the water cannot dissolve any more salt, is
approximately 40%. The brine then flows past a mechanical non-return valve into the
ion exchanger and flushes the existing water into the sump. The built-in non-return
valve in the softener prevents the brine from mixing with the incoming water during
normal operation.
The brine flushes the resin in the ion exchanger, and replaces the retained calcium
and magnesium ions with sodium ions. At the next program start, the incoming water
flushes out the remaining brine and hardness minerals before the actual dishwashing
program begins.
4.17.2
Reactivation Cycles
The salt in the salt container is sufficient for several reactivation cycles, as it is not
dissolved all at once. As the quantity of salt in the salt container drops, the
concentration of the brine decreases. When a specific concentration is reached, the
float (containing a magnet) activates the float switch. The salt indicator is then
illuminated to advise the operator that the softener system needs salt. The
dishwasher operates with consumption-linked reactivation. After a certain number of
programs, the electronic activates the solenoid valve (Y38/1) at the end of the final
rinse cycle and starts the reactivation process. (Refer to Table 4-8.) If
Technical
Information
several other programs, such as Economy, are operated between two
Universal 65°C programs, the electronic calculates the probable quantity of water
used and the approximate number of equivalent Universal 65°C programs.
Therefore, the figures provided in Table 4-8 can be considered as a guide only.
1
Salt level float switch (reed switch) B8/2
2
Salt container
3
Water exit
4
Ion exchanger
5
Supply water intake on underside
6
Softener solenoid valve Y38/1
7
Intake for water for reactivation from
reservoir in water mixer
