9
TANK FILLING:
The necessary water volume is sent to the brine tank in order
to prepare the same amount of consumed brine for the next
regeneration process. This process is fully automatic, thus it
is not necessary to add any water to the brine tank (except
during the start-up, as indicated in ‘Section 7’).
NOTE: During the regeneration process, the systems may allow
untreated water to go through, in order to guarantee the water
supply.
2.4 Regeneration Degree and Capacity
The exchange capacity is the quantity of hardness that a cer-
tain resin volume can retain before getting exhausted. This va-
lue is usually expressed as ºHFxm3/litre.
The higher the resin volume of the system is, the higher will be
the quantity of hardness that can be retained before the resin
gets exhausted. It is very important to choose the appropriate
system for each type of installation.
Depending on the quantity of sodium chloride used to rege-
nerate each litre of resin, the exchange capacity of the resin
may change.
STRATOS softeners have six different regeneration degrees,
depending on the conditions in which the system must work
(for further information, please read ‘Section 3’).
Systems are supplied as a standard with a regenerating de-
gree of 80g NaCl/litre of resin, which is appropriate to work up
to the maximum hardness indicated below:
MODEL
STRATOS 15
STRATOS 25
Salt consumption
1.2 Kg (80g/lt)
2 Kg (80g/lt)
Maximum hardness
45ºHF
70ºHF
2.5 Working Flows
Water softeners working by means of an ion exchange must
respect certain contact periods between water to be treated
and resin, in order to ensure that the softening process is ca-
rried out properly. For STRATOS softeners the working ranges
indicated below must be respected:
Minimum flow (litres/hour): Resin volume x 4
Maximum flow (litres/hour): Resin volume x 40
Should working ranges be outside the recommended ranges,
the proper operation of the system could be affected (exces-
sive loss of charge, hardness leakage, etc.)
For further information on the minimum and maximum flows for
each softener, please check the general specifications table.
2.6 Hardness Leakage
The ion exchange process on which water softening is based
may be affected by different factors, which can reduce its effi-
ciency, thus causing a certain level of hardness leakage.
ELEVADA CONCENTRACIÓN DE SODIO EN EL AGUA A TRATAR
It may interfere in the exchange process.
OVERFLOW
Since there is not enough contact time, some of the hardness
may not be retained by the resin.
REGENERATION DEGREE
The higher the regeneration level is, the lower is the risk of a
hardness leakage.
2.7 Residual Hardness
Depending on the final use of treated water, it may be neces-
sary to obtain fully softened water or, on the contrary, it may be
desirable to leave some residual hardness.
These systems have been designed to supply fully softened
water, but the control valve integrates a residual hardness
mixer, which allows for the regulation of the desired hardness
degree in treated water (see ‘Section 7’).
Note: In water for human consumption it is recommended
to have a residual hardness between 5 and 8 ºHF if pipes
are made of copper, and between 8 and 10 ºHF if they
are made of iron (for the latter, it is also recommended to
install a silicopolyphosphates filter afterwards).
To Next Page
Loading...