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SECTION 2 HOWYOURWATERFILTERWORKS
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20. FILTERED WATER SERVICE, AND BACKWASH
SERVICE
CLARIFIER FILTER
During service (FIG. 5) water goes into the filter and
DOWN through the bed of mineral. The mineral
takes the dirt, sand, silt, clay and other sediments out
of the water and holds it in the bed. Clear, clean water
goes out of the filter and into the house pipes.
NEUTRALIZER FILTER
As low pH (acid) water flows DOWN through the filter,
neutralite mineral is slowly dissolved to raise the pH.
The neutralized or non-acid water then flows into the
house water pipes. Because the neutralite does
dissolve, you have to add new mineral at least once
each year, and sometimes more often (see page 14).
BACKWASH
Backwash is a reverse or UPWARD fast flow of water
through the filter. The fast, upward flow flushes dirt,
sediment, iron, etc., from the mineral bed and to the
drain. The bed is lifted and expanded for good
cleaning. The bed is also mixed to remove any
channels water flow may have formed through the
mineral.
Following backwash, water again changes direction
to flow downward through the bed at a fast rate. The
mineral bed is repacked and prepared for return to
service.
TASTE AND ODOR FILTER
The taste and odor filter is filled with activated carbon.
As water flows into and DOWN through the filter (FIG.
5), the tastes and/or odors are adsorbed and held by
the carbon. Water without bad tastes or odors goes
into the house pipes.
When the activated carbon no longer takes the tastes
and/or odors out of the water, you must replace it (see
page 16). The carbon usually lasts for up to 1 year,
and sometimes longer. It depends on how much
water you use, and how much taste and/or odor is in
the water.
BYPASS
WATER OUT
WATER
IN
Drain
FILTERED
WATER OUT
SERVICE
l=
q BACKWASH
(25 minutes)
FILTERED
Mineral WATER OUT
Bed
WATER
IN
WATER
IN
.Drain
Mineral
Bed
FAST RINSE
Ji
(5 minutes)
12