Culligan Smart Controller HE DF 12 Installation, Operation, And Service Instructions With Parts Lists page 31

Sequence of Operation
When a filter is in standby or a regeneration cycle, the GBE controller sends a signal to the Aux 4 terminal of the primary
auxiliary board (see Figure 32), activating the solenoid valve. When the solenoid valve is electrically activated, ports #1
and #2 of the solenoid (Figure 31) become common. This will direct pressure from a constant IN pressure supply to the
blocking diaphragm valve, which prohibits the flow of water to service. Once the controller signals the unit to return to a
Service status, the solenoid valve is deactivated. When the solenoid valve is electrically deactivated, ports #1 and #3 of
the solenoid become common. This will vent pressure, from the diaphragm valve to drain. The diaphragm valve opens to
allow treated water to flow to service.
From
N/C
Pressurized 2
Source
Solenoid Valve
Solenoid Valve Energized
When Tank
in Regen or Standby
Cat. No. 01024514
To Drain
3
N/O
Blocking
N/O 1
Diaphragm
Figure 31.
PHONE
Figure 32.
To Drain
N/O
From
Pressurized N/C
2
Source
Solenoid Valve
Solenoid Valve Not Energized
When Tank "Online"
2.5v
24v
S O L
3
From Blocking
N/O 1
Diaphragm Valve
Installing Accessories 27