Installer Manual 255/LOGIX 742-762-764 - Description
24 / 92 Ref. MKT-IM-021 / A - 20.02.2019
3.6.3. Lockout "L" systems
The first tank of the system whose capacity is exhausted will be regenerated first. The tank controller
will send a signal to all others controllers in the system that will not be able to start a regeneration
until it is finished.
The others tanks will then regenerate in order of priority according to the remaining capacity.
When you order a 255 - 764L valve, it will be shipped with a standard 255 Logix camshaft. This
camshaft does not close the bypass flapper during regeneration, so there will be hard water available
at the outlet during all the regeneration. If you are building a multi-simplex system with 255 - 764L
valves and you do not want hard water to be bypassed during the regeneration, use one of the
following options :
• Use the 255 Logix duplex camshaft on each valve in the system. This camshaft ensures that the
bypass flapper is closed during all the regeneration process. The backwash is then done with
treated water of another tank entering through the valve outlet (same principle as for a duplex
mode A or P). If you choose this option, do not forget to take into account this additional flow to
be produced in service when sizing your installation.
Use a solenoid valve on the valve output and a microswitch kit. The microswitch is mounted on the
camshaft and it closes the solenoid valve for the duration of the regeneration. Therefore the valve will
not use water coming from the others tanks.
Service Service
Tank 1 Tank 2
C1
C2
C3
C4
C8
C7
C6
C5
Others tanks will not initiate a
regeneration while tank 1 is not back in
service
Tank X
Service
...
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