Galcon AMC-12AC, User Manual

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Chaining Controllers
In order to operate a battery of screen, disc or gravel media filters that include a more filters than a
single controller can handle, it is possible to daisy-chain several controllers.
The D.P. switch that reads the pressure drop across the battery is connected to the first controller of
the chain (the Master). The End of Cycle output of the master controller is connected to the D.P. input
of the second controller (the first slave) and this controller End of Cycle output is connected to the D.P.
input of the next controller. This type of connection can be spanned over as many controllers as
needed.
When the actual D.P. switch send a signal the master controller starts a flushing cycle. Once this cycle is
completed the master controller sends a signal through its End of Cycle output to the second controller
to start its flushing cycle, and so on to the last controller in the chain as illustrated in the following
drawing.
Note:
Make sure that the PD delay in the chained controllers is set to not longer than 5 seconds. This
ensures proper transition from the last filter in the first controller to the first filter in the next
controller.
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AMC Flushing Controller User Guide
Setup and Operation