Culligan Smart Controller HE DF 12 Installation, Operation, And Service Instructions With Parts Lists page 59

Fast Rinse Flow
Backwash is followed by a fast flow of water down through the resin tank. The fast flow packs the resin bed and gets it
ready for return to service.
Raw
Water
Cat. No. 01024514
B
A
P1
P6
P2
P3
F
E
Figure 63. Fast rinse flow.
Fast Rinse
Piston
P1–Inlet
P2/3–Outlet
P4–Backwash
P5–Rinse
P6–Bypass Piston
Brine Piston
PR–Refill Piston
Tank
Inlet
C D
P4
Brine
Piston
P5
PR
G H
Tank
Outlet
Position
Open
Closed
Closed
Open
Open
Closed
Closed
To
Drain
To
Brine
Tank
Troubleshooting 55