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I SECTION2 HOW YOUR WATER FILTER WORKS
B. FILTERED WATER, SERVICE AND REGENERATION
IMPORTANT: Sears water filters are sometimes installed alone in the water system, but most often other
water treating equipment is needed. Always be sure to have your water tested by a qualified testing labo-
ratory. If you need help, ask at your Sears store, or call the Kenmore Water Line, 1-800-426-9345.
TANNIN WATER
Water containing tannin has a yellowish cast (even
after softening and/or filtering). Tannin can be an
associated cause of yellow stains on washable fab-
rics, china, and plumbing fixtures. Tannins (humic
acids) are harmless organics, caused by the water
passing through peaty soil and decaying vegeta-
tion.
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SERVICE
When the filter is providing filtered water, it is
called "Service". During service, unfiltered water
flows from the house main water pipe into the fil-
ter. Inside the filter resin tank is a bed made up of
thousands of tiny, plastic resin beads. As unfil-
tered tannin passes through the bed, each bead
attracts and holds the tannin particles. It is much
like a magnet attracting and holding metals. Water
without the tannin particles flows out of the filter.
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SERVICE
WATER
IN
Res,n TankA /_'_
Salt Storage _ il
Tank I
....- Resin Bed
REGENERATION
FILL: Salt, dissolved in water is called brine. Brine
is needed to clean the tannin particles from the
resin beads. To make the brine, water flows into
the salt storage area during the fill stage as shown
below.
FILL
WATER
IN
1 .
Fill Water
Salt
I" Storage Tank
(salt not shown)
BRINING: During brining, the brine travels from
the salt storage area, to the resin tank. Brine causes
the resin to release the tannin particles, and they
are carried to the drain.
The nozzle and venturi create the suction to move
the brine, maintaining a slow flow rate for maxi-
mum cleaning.
After a period of time the resin becomes coated
with tannin particles and it has to be cleaned. This
cleaning is called regeneration. Regeneration is
started at 12:00 AM (or other preselected time) by
the timer, and consists of five cycles: (1) FILL, (2)
BRINING, (3) BRINE RINSE, (4) BACKWASH, (5)
FAST RINSE.
2-3
Problems, Questions? Call 1-800-426-9345 Kenmore Water Line