Hellenbrand Iron curtain system 2.0 Owner's Manual page 13

Solenoid
Valve
Timer
Aeration Tank
Solenoid
Valve
Timer
Aeration Tank
Shuttle
Valve
Shuttle
Valve
Step 3.
Filter Tank Operation
Backwash Cycle
Reversing the flow of water through the
filter bed and backwashing dirty water to
the drain cleans the filter bed. Raw water
enters the filter control valve through the
inlet port and is directed down the dis‑
tributor tube and out the lower distributor
at the bottom of the tank, flowing upward
through the multimedia filter bed toward
the top of the tank into the control valve.
Water is then directed through a specific
flow restrictor and out the drain port to
be discharged to drain.
U.S. Patent #B 5,096,596
Patent Pending
Step 4.
Filter Tank Operation
Rinse Cycle
The rinse cycle packs the clean filter
bed. Raw water enters the control valve
through the inlet port and is directed
downward through the filter bed into
the bottom distributor, up the distributor
tube into the control valve. Water is then
directed through a specific flow restrictor
and out the drain port to be discharged
to drain.
U.S. Patent #B 5,096,596
Patent Pending
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