Culligan Smart Controller HE DF 12 Installation, Operation, And Service Instructions With Parts Lists page 57

Service Flow
Raw water is allowed in the inlet to the top of the tank. The water is run through the resin up the manifold to the outlet.
The water to the outlet should be soft if the system is operating properly.
Raw
Water
Cat. No. 01024514
B
A
P6
P1
P2
P3
F
E
Figure 61. Service flow.
Service
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
Open
Closed
Closed
Closed
Closed
Closed
To
Drain
To
Brine
Tank
Troubleshooting 53