Operating Principle; Salt Replenishment - OWA DELFIN MEGA Einbau- Und Betriebsanleitung

h) Fill regenerating salt into the salt reser-
voir.
Our recommendation: Broxo or Solvay
salt, either as blocks, tablets or coarse 7-
15 mm grains. If other salts are used
then, based on our experience, the brine
reservoir (7) and the sieve (8, 88) at the
brine valve will require more frequent
cleaning.
i) A regeneration and consequently the
venting described in chapter "Commis-
sioning" is triggered by pressing the
regeneration button (12). (The brine res-
ervoir (7) must be filled with water or
brine.) The correct functioning of the
system can be checked as described in
chapter "Maintenance". After regenera-
tion has ended, then if it has not yet
occurred, setting of the system takes
place as described in e) and f). The sof-
tener is then ready for operation.
j) Refit the cover (2): First push the two
front lugs on the inside of the hood (2)
fully home into the corresponding slots
of the bracket (21).
Then press the rear part of the hood
down until both locking hooks (16)
engage.
5.2

Operating principle

The softener is a parallel system, that is two
identical resin containers take over water
supply in parallel operation. The two resin
containers are sequentially regenerated de-
pendent on the water volume that has flown
through them and the water hardness. In
this way one resin container is always avail-
able to the consumer, even during regener-
ation. Miser salting is used for regeneration
so that the water softening system always
operates with optimum economy and in an
environmentally sound manner.
The resin containers are filled with ion-ex-
change resin. This comprises small plastic
resin balls on which the calcium ions, which
make the water 'hard', are exchanged for
sodium ions. This makes the water "soft".
Operation
However, the ion-exchange resin only ab-
sorbs a limited quantity of hardness compo-
nents. Dependent on the water hardness,
sooner or later it becomes exhausted. The
level of exhaustion is measured by a water
meter that automatically triggers regenera-
tion of the resin containers. To do so, diluted
brine (sodium chloride) is used to remove
the hardness components from the resin.
Dependent on the raw water hardness, a set
screw is used to wet the required salt quan-
tity for the regeneration.
Regeneration is performed automatically via
wear-free high quality oxide ceramic disc
valves. The regeneration program is fixed
and need not be reprogrammed in the event
of a power failure as is often the case with
other systems.
In each regeneration, a low quantity of chlo-
rine is created in the diluted brine. This pro-
tects the entire system against contamina-
tion. The unused chlorine is completely
removed from the system during the flushing
processes.
A certain pressure loss is created in the sys-
tem dependent on the water consumption
(see chapter 10.3 "Graphs"). If, combined
with high water consumption, this is greater
that 1 bar, an overflow valve integrated in
the control head opens so that hard water
can flow past the water softening system
and the pressure loss is reduced. As a re-
sult, there is a temporary increase in the
mixing water hardness in the water pipe
downstream of the softener.
5.3

Salt replenishment

As the water softening system works auto-
matically, all that is necessary is occasional
salt replenishment. If no or only a very small
amount of softened water is drawn, the sof-
tener performs an additional double regen-
eration approximately every 4 days for
hygiene reasons.
DELFIN MEGA 39