14
AUS
8
Operation
8.1
Setting the hardness of blended
water
The unit is preset to 4 °d.
To test the water hardness, allow the nearest cold
water tap to run for a while (about 500-600 l/h) and
check the hardness of the blended water using
the AQUATEST hardness tester. Adjust with the
blending valve V until the desired value (BWT
recommendation 4 - 8 °d) is reached.
Note:
The sodium content increases. Check local
limits or regulation apply. This limit should be
set low, so that people on a low sodium diet
can still drink water from the unit and use it
for cooking.
Sodium content of partially softened water
The sodium content increases by 8.2 mg/l if the
hardness of drinking water is decreased by 1 °d.
Hardness of drinking water – hardness of blended
water x 8.2 mg/l = increase in the sodium content.
8.2
Handing over the unit to the ope-
rator
If there is a delay between the installation/start-up
of the unit and transfer to the operator, a manual
regeneration must be performed.
The operator must be told how the unit works as
well as how to operate and inspect it. Ensure that
the operator receives the installation and operating
manual.
V
