Culligan M1 Series Installation, Operation And Service Instructions page 30

Pretreatment Lockout
The controller allows an external contact closure to cause the RO to go into a "pre-treat lockout" condition. This signal is
Normally Closed. When OPEN it indicates that the system should STOP because a piece of pretreatment equipment is in
a regeneration state.
When this event occurs, the system immediately stops making RO water and the pump will turn off and close the inlet
solenoid. It will remain off until this condition no-longer exists and then it will re-open the inlet solenoid, wait one minute
and then start the pump to return to the "make water" condition.
Timeclock controlled softeners, such as the Hi-Flo® 3, do not offer pretreatment lockout. If these units are used for pre-
treatment, they should be duplexed, or regenerated by a timeclock so that regeneration can occur when the RO unit is not
in operation.
Wiring for Hi-Flo® 22, Hi-Flo® 55e, CSM Softeners and Filters with MVP Controls
For these systems, you must add a 24 VAC relay, part number 01016156, to provide the pretreatment contact.
MVP to Relay: Connect a wire from terminal 5 of the relay to the left terminal of P8 (Aux 2) on the MVP circuit board. Con-
nect another wire from terminal 1 of the relay to the right terminal of P8. See Figure 20.
Relay to CP Plus: Connect a pair of wires from the PRE-TREAT terminals on the CP Plus board to terminals 2 and 4 on
the relay. Remove the installed jumper wire when making this connection.
Smart (GBE) Controller
SW6 Dip Switch
P11
Battery
P6
Motor
P9 Power P5
2.5VAC 24V Aux1
P7 Sol
Valve
26 Culligan® M1 Series Reverse Osmosis
LCD
P3
Comm
P8
Aux2
P1
Flow
Aqua
Cam
Sensor Meter
Relay
Figure 20.
CP Plus Controller
MVP to CP Plus relays.
26 Cat. No. 01022940