UNITED WATER INC.
A
quAtek AtWS-SerieS uSer Guide
5
Two Tank Systems
All Aquatek Two Tank Water Softeners are comprised of three
primary components: (A) Control Valve, (B) Mineral Tank, & (C)
Brine Tank.
A. Control Valve: Your control valve automatically performs 3
primary operations which are commonly referred to as cycles.
These operations/cycles are (1)Service, (2)Regeneration, & (3)
Brine Refill.
1. Service: During service, raw water passes through the inlet of
the control valve and down-flows through the resin bed where
the hardness is removed, the newly softened water flows up
the distributor pipe and exits through the outlet of the control
valve and into your home. Service flow continues until the pre-
set gallonage has been used which then initiates the regener-
ation process.
2. Regeneration: The regeneration cycle can be broken down
into 4 parts:
A. Backwash (~10 minutes) Raw water is directed down through
the distributor pipe flowing through distribution system at the
bottom of the tank which then travels upward through the res-
in bed. This up-flow expands the resin bed scrubbing the beads
and washing away any accumulated dirt or sediment out of the
system into the drain.
B. Brine & Slow Rinse (~ 60 minutes)The salt-brine solution is
pulled from the bottom of the brine tank and into the mineral
tank where it passes through the resin bed restoring its ability to
remove hardness from your water. The brine then flows up distrib-
utor pipe and out of the system into the drain.
C. SECOND BACKWASH (~10 minutes) Water flow is the same as
the first backwash. This step in the regeneration process helps
to remove iron that was released from the resin during the Brine
cycle.
D. FAST RINSE (~10 minutes) Raw water is brought through the inlet
of the control valve and down through the resin bed, then up the
distributor pipe and exits the system into the drain. This removes
all remaining brine from the resin bed, completes the regenera-
tion cycle and initiates the Brine Refill.
3. BRINE REFILL: Fresh water flows through the brine line and into
the brine tank refilling it to the preset level. Now additional salt
is being dissolved to provide the salt-brine solution that will be
needed for the next regeneration cycle.
A Control Valve
B Mineral Tank
C Brine Tank
B. The Mineral Tank: The Mineral Tank contains Ion Exchange Resin (*Note* ATWS-C/CC Carbon Combo
Softeners also includes an upper shelf of carbon media for chlorine taste/odor reduction & ATWS-HI, ATNWS
& ATTWS contain specialized resin beds to provide their added treatment abilities). The number of gallons
of hard water that can be treated by the resin before it needs regeneration is called the “capacity” of the
resin column, and depends upon the amount of hardness minerals in each gallon of water (expressed as
grains per gallon) and upon the amount of regenerant brine solution (expressed as pounds of salt) passed
through the resin column during regeneration.
C. The Brine Tank: The Brine Tank consists of a salt storage container and brine valve assembly. The salt
storage container holds the salt that is used to make the regenerant salt-brine solution. The brine valve
assembly limits the amount of water that is returned to the salt storage tank during the brine refill cycle. Be-
cause a predetermined amount of salt is dissolved with each brine refill cycle, the salt must be periodically
replenished in order to maintain efficient operation.
see page *** for more on The Brine System
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