7
Modes of
Operation
Water Meter Mode
In water meter mode, the controller keeps track of the quantity of water that has flowed through
the resin bed. Based on the influent water hardness and the hardness capacity of the resin bed,
a service life expectancy in the quantity of softened water is calculated and programmed into the
control. When the set point is reached, regeneration is triggered. In delay regeneration mode, if
the predict mode is turned on, the average daily water usage will be compared to the remaining
capacity at the regeneration delay time to predict if another day’s water usage can occur before
requiring regeneration. If enough capacity is not present then the regeneration will occur at that
time. If the predict mode is not selected the regeneration will start at time of regeneration. In
immediate mode the regeneration starts when the capacity is exhausted. If time clock backup is
set and the capacity has not been exhausted but the days since last regen is greater than time
clock backup setting, the softener will immediately regenerate.
Aqua-Sensor Mode
The Aqua-Sensor is a conductivity probe that senses when a hardness front passes through the
resin bed. It functions independently of the influent water hardness so therefore, is useful in
conditions when the influent water hardness varies throughout the year. It provides for the most
efficient mode of operation. In addition to sensing when a resin bed is exhausted, it can also be
used to determine when the brine solution is rinsed from the resin bed during the Brine Draw/
Slow Rinse cycle triggering the control to move to fast rinse. This patented feature provides water
savings by optimizing the amount of rinse water required to completely rinse out the resin bed.
Manual Regeneration
Pressing and holding the regen button for 5 seconds will initiate an immediate regeneration. The
beeper will give one beep at the start of manual regeneration (when the motor starts to turn). In
delay mode, pressing and releasing the regen button will light the regen icon for regeneration to
occur at the set delay time. Pressing and releasing the regen button again will turn off the regen
icon.
Predict Mode
The Predict Mode is used with the flow meter to determine the optimum regeneration point. Before
the regeneration starts, the control will compare the remaining capacity value with the average
daily water use. If the average daily water usage is less than the reserve capacity, the controller
will wait 24 more hours before regeneration. If the reserve capacity is less than the average daily
water usage, the control will initiate regeneration. This works in delay mode only. At any time, if
the total capacity value is reached, the control will initiate an immediate regeneration.
Efficiency Mode
Water softeners historically use an optimum time range to control the Regeneration cycle steps,
with a minimum and maximum time required to perform each step dependent on the salt being
used, the hardness total and iron level. Culligan typically uses the maximum time range to insure
effective Regeneration. However, if the iron content of the water to be softened is zero, and
the hardness level is less than 20 gpg, Culligan has developed a new set of regeneration times
geared to reducing salt and water usage. These times are defined under a new operating mode
coined “Efficiency Mode”. Compared to the present time values used, these new regeneration
times and salt dosages are considerably less.
