6
3.2 Backwash
This is the first step of the regeneration process, in which water flows upwards
through the resin bed to release any accumulation of dirt within the resin bed
and to fluff the bed, allowing more efficient contact between brine and resin
during the brine draw stage.
Water enters the resin tank from the bottom and comes out at the top out to
the drain.
3.3 Brine Draw
This is the second step of the regeneration process where the control valve
draws a concentrated brine solution from the brine tank.
The brine flows through the resin bed in a downward direction, replacing the
hardness minerals captured during the service stage thus restoring its
capacity.
3.4 Slow Rinse
At the end of the brine draw, water is passed through the resin to replace the
brine and rinse it out into the drain.
3.5 Rapid Rinse
The rinsing flow rate is increased to eliminate any lingering brine pockets
within the resin. This ensures that the resin is free from any salt prior to the
return to service.
3.6 Brine tank Refill
Water is refilled into the brine tank.
For total hardness of 300ppm, the service flow for this softener has been set
to 20 hours before regeneration at a flow rate of equipment specification
table
WARNING
3
Any continuous operation above 22m /hr may result in
channeling, bed compaction, and hardness leakage.
WARNING
The brine and salt levels in the brine tank should always
be checked to ensure there is enough brine for
regeneration.
WARNING
Drain water should not be directed to a garden as the
high salt content (sodium) affects plant growth.
Summary of Contents for SF
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