Judo i-soft, Инструкция по установке и эксплуатации

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JUDO i-soft 17
Operation
If the calculated overall sodium concentra-
tion exceeds the values permitted by local
the drinking-water regulations, it can be
corrected by increasing residual hardness.
Based on raw water hardness and the resi-
dual water setting, the electronics unit
checks the sodium concentration resulting
from these values. The raw water sodium
concentration will not be considered in the
calculation performed by the electronics
unit. Upon exceeding a limit value stipulated
by local drinking-water regulations, the
display first indicates:
to be followed after 5 seconds with the
message:
After 5 seconds, the admissible minimum
value for residual hardness is shown on the
display. Then the display shows e. g.:
After another 5 seconds, the following comes
up:
By pressing the <OK> key, the admissible
minimum residual hardness value is set. If a
lower residual hardness value is required, it
can be adjusted by pressing keys 1 -10
despite the sodium threshold being excee-
ded.
In case the raw water shows an elevated
sodium concentration it might be necessary
to set residual hardness above 10 °e.
By pressing the <OK> key together with key
<8>, residual hardness can be increased in
steps of 2 °e. Please observe the limitations.
Calculating the sodium content
°e raw water hardness
(ask the waterworks or measure
with a hardness test device)
- °e mixed water hardness
(measured value)
= °e difference of water hardness
x 6.4 mg Na
+
/l x °e
exchange value for sodium ions
= mg/l increase in sodium content due
to softening
+ mg/l sodium already in the raw water
(ask the waterworks)
= mg/l total sodium content in mixed
water
Tab. 1: Calculating the sodium content
Example calculation of the sodium
content
25 °e raw water hardness
- 10 °e mixed water hardness
= 15 °e difference of water hardness
x 6.4
= 96 mg/l due to softening
+ 10 mg/l from waterworks
= 106 mg/l total
Tab. 2: Example calculation of the sodium content
Attention!
sodium limit val
see instruction
manual
min. possible
res. hard. 10 °e
Accept <OK>
or key 1-10