System Operation Cycle Functions 5
Rev C
• Working water pressure range is 20 to 120 psi (1.38 to 8.27 bar). In
Canada the acceptable working water pressure range is 20 to 100 psi
(1.38 to 6.89 bar).
• Use only regenerant salts designed for water softening. Do not use ice
melting, block, or rock salts.
• Follow state and local codes for water testing. Do not use water that is
microbiologically unsafe or of unknown quality.
• When filling media tank, do not open water valve completely. Fill tank
slowly to prevent media from exiting the tank.
• When installing the water connection (bypass or manifold) connect to
the plumbing system first. Allow heated parts to cool and cemented
parts to set before installing any plastic parts. Do not get primer or
solvent on O-rings, nuts, or the valve.
System Operation Cycle Functions
1. Service (Downflow)
Untreated water is directed down through the resin bed and up
through the riser tube. The water is conditioned as it passes through
the resin bed.
2. Brine Refill
Water is directed down through the resin bed to the regenerant tank
at a controlled rate, to create brine for the next regeneration.
3. Brine Preparation
The refill water is allowed to dissolve the salt and prepare brine.
4. Brine/Slow Rinse (Upflow)
The control directs water through the brine injector and brine is drawn
from the regenerant tank. The brine is then directed down the riser
tube up through the resin bed and up to the drain. The hardness ions
are displaced by sodium ions and are sent to the drain. The resin is
regenerated during the brine cycle. Brine draw is completed when the
air check closes.
5. Repressurized Cycle (Hard Water Bypass Flapper Open)
This cycle allows the air and water to hydraulically balance in the
valve before continuing the regeneration.
6. Backwash (Upflow)
The flow of water is reversed by the control valve and directed down
the riser tube and up through the resin bed. During the backwash
cycle, the bed is expanded and debris is flushed to the drain.
7. Fast Rinse (Downflow)
The control directs water down through the resin bed and up through
the riser tube to the drain. Any remaining brine residual is rinsed from
the resin bed.
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