3 – 2
h
ow
The
sysTem
works
©
IT
4000
9.4000.04
1148
When the pressure loss in the water softening system
exceeds 1 bar due to a considerable amount of water
drawn off (for instance caused by a flushing valve),
an overflow valve integrated in the control unit opens,
a bypass is opened, which reduces the pressure loss
and a small amount of water is not treated during
that short moment. As a result, the hardness of the
blended water is somewhat higher for a short while.