D. Setting the desired water hardness number of the by - pass valve
Any standard by - pass valve, fitted on the
water softener, features water hardness
adjusting knob (blend adjusting knob; figure
5). The blend adjusting knob is used to
adjust the hardness of softened water. For
households it is recommended to use water
with hardness in the range between 3 and 6
degrees (according to the German water
hardness scale). Prior to any setting, loosen
the hex nut of the water hardness adjusting
knob (turning it counter - clockwise) in order
to unlock it and to set it in motion.
In order to increase the water hardness
number in the softened water, turn the water
hardness adjusting knob counter -
clockwise, while holding the by - pass valve
handle. From fully closed position of the
water hardness adjusting knob the water
hardness number can be increased with the
maximum of six full turns. Exceeding the
maximum of 6 counter - clock turns of the
water hardness adjusting knob may result in
the screw’s internal o'rings being pulled out
of their seat and water leak from the bypass
valve. If water hardness exceeds the desired
water hardness, turn the water hardness
adjusting knob clockwise, while holding the
by - pass valve handle. Once the desired
hardness is set, the water hardness
adjusting knob may be locked in place by
tightening the hex nut (turning it clockwise)
until stop. Make sure that each time the by -
pass valve is set in the by-pass position (i.e.
with piston handle fully pushed in), the water
hardness adjusting knob must be fully
closed (turn it clockwise until stop).
Descriptions in English: (Serv position, normal operation of the softener) handle extended, softened water outlet, hard water inlet,
redirection of part of hard water, controlled by water hardness adjusting knob, softener valve outlet, softener valve inlet, water
hardness adjusting knob - in order to increase the water hardness number in the softened water, turn counter – clockwise; in order
to reduce the water hardness number in the softened water, turn clockwise
(by-pass position)
handle retracted, softened water outlet, hard water inlet, hex nut – turn clockwise to lock water hardness
adjusting knob, turn counter - clockwise in order to unlock water hardness adjusting knob
Section II
1. Control panel functions
A. Manual activation of regeneration process
During operation of the water softener
situations may occur when manually
activated, additional regeneration process is
Figure
5
16
