Electronics, Water flow through the softener in fast rinse, How your water softener works – Kenmore INTELLISOFT 625.38376 User Manual
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How Your Water Softener Works
FAST RINSE:
Backwash is followed by a fast flow of
water down through the resin tank. The fast flow packs 
the resin bed and gets it ready for return to service.
After fast rinse, the softener returns to service. Hard 
water goes into the resin tank where the resin bed 
again takes out the hardness minerals. Soft water goes 
to the house soft water pipes.
SOFT WATER SERVICE AND REGENERATION
AUTOMATIC BYPASS
During the brining, brine rinse and backwash cycles of 
regeneration, HARD water goes through the softener 
valve and to the house pipes. If a faucet is opened,
hard water is there for your needs. However, you should 
not use hot water, if possible, because the water heater 
will refill with hard water. The softener, as factory pro
grammed, regenerates from 2:00 AM to about 4:20 AM, 
a time when not much water is used.
If you start your day prior to 4 AM, you may need to
change the recharge starting time. Set the recharge 
time to 12:00 AM or 1:00 AM. Then regeneration will 
start and end that much earlier and your water heater 
will not refill with hard water if a hot faucet is opened.
ELECTRONICS
Two main parts of the softener’s electronics are:
a WATER METER, and a COMPUTER.
• WATER METER
The water meter is in the softener
valve outlet. As water flows through the meter, it sends 
electric pulses to the computer. The computer 
changes the pulses to a measure in gallons of water.
• COMPUTER
The computer is part of the faceplate
timer circuit board. It is programmed to know the soft
ener’s capacity (how many grains of hardness miner
als it will take out of the water before a regeneration is 
needed). When starting the softener, you set it for the
grains per gallon (gpg) hardness of the water.
To find a regeneration pattern best for your needs, the 
computer uses:
(1) water usage from the meter
(2) hardness setting
(3) softener capacity
(4) time since the last regeneration.
The computer always adjusts this pattern to your water
using habits. It works toward providing you with soft
water for the longest time and at the most efficient salt
usage.
WATER FLOW THROUGH
THE SOFTENER
IN FAST RINSE
Soft Water
OUT
Hard Water 
IN
Drain
FIG. 53
Softening capacity is used as hard water goes through 
the softener and hardness minerals are removed. When 
the computer determines that only enough capacity 
remains to provide soft water up to the next regenera
tion starting time (2:00 AM, or as otherwise set) it will 
schedule a regeneration. When the regeneration 
begins, 
^RECHARGE
or
RECHARGE TIME REMAIN
ING
flashes during the regeneration.
* Note: If the CLEAN feature is set to ON, a cleaning
backwash (CLEAN and Bkwsh or Rinse flashes in
the display, along with the minutes of the clean 
cycle remaining), precedes the recharge.
Questions? Call The Kenmore Water Line 1-800-426-9345
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