Judo 8203040, Инструкция по установке и эксплуатации

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22 JUDO i-soft@home
Operation
5.5 Function description
5.5.1 Method of operation
The filter 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”. In
the control head an adjustable quantity of
not-softened raw water is admixed to obtain
the desired water hardness downstream of
the system. However the ion-exchange res-
in only absorbs a limited quantity of these
hardness components. Dependent on the
water hardness and the treated water vol-
ume, sooner or later it is exhausted. The
time at which it becomes exhausted is
measured with the water meter and regener-
ation automatically triggered. To do so, dilut-
ed brine (sodium chloride) is used to remove
the hardness components from the resin.
5.5.2 System design
The water softening unit is designed as a
parallel system that is regenerated in two
stages. During regeneration, the two resin
containers are alternately responsible for
soft water provision. In this way soft water is
always available for the consumer, even
during regeneration.
5.5.3 Regeneration
With a very short regeneration period of
about 10 minutes per resin container (total:
2x10 minutes) high volume continuous
drawing is possible.
The soft water volume is precisely meas-
ured using a water meter in the system’s soft
water pipe and in this way triggering of re-
generation is controlled. Regeneration is
performed according to DIN EN 14743 and
DIN 19636-100 using miser salting. Disin-
fection of the system takes place at regular
intervals to prevent microbe contamination.
The small quantity of chlorine required for
this is created electrolytically during regen-
eration from the absorbed brine.
5.5.4 Control of regeneration
Regeneration is performed automatically via
wear-free ceramic disc valves. The regener-
ation sequence is fixed by the geometry of
the discs and therefore need not be re-en-
tered after a power failure.
5.5.5 Monitoring the raw water
A sensor (i-guard) in the inlet of the water
softening unit continuously monitors the raw
water. Therefore, the system knows after
which water volume the regeneration must
be started. It is therefore not necessary to
programme the raw water hardness.
5.5.6 Automatic residual hardness
regulation (i-matic)
Depending on the raw water quality and de-
sired water hardness, the internal blending
unit is automatically adjusted by means of a
servo motor.
5.5.7 Overflow valve
If because of very high drawing of water
(e.g. by a flushing valve) the pressure loss in
the water softening unit is greater than
1.0 bar, than an overflow valve integrated in
the control head opens so that hard water
can bypass the system to limit the pressure
loss. This means that the residual hardness
temporarily increases in the pipe down-
stream of the water softening unit.
5.6 Filling with salt
For each regeneration, approx. 200 g of salt
is used. The control unit of the water softening
system then automatically calculates the re-
duced salt reserve.
The regenerating salt must as a minimum
comply with the requirements of DIN EN 973
and be of food-grade.