Nik,
Poolbreh is correct...
The whole purpose of using the pump/filter relay is so that the only time the SWCG gets power is when the pump is running, and the system is in either the Pool mode or the Spa mode. The pump/filter relay no longer controls VS pumps, but it still only closes when the pump is being told to run.
The reason for this is that you never, ever, what the cell to be on when there is no water flow. If you look at the label on the SWCG transformer, it tells you that is mandatory that it is connected to the load side of the pump/filter relay.
The relay is the Primary safety device and the flow switch in the cell is the Secondary safety device. This ensures that the cell will not explode if run without water flow. Even though explosions are rare, they do happen as seen several times here at TFP.
Keep in mind that the SWCG's transformer can be wired for 240 volts AC or 120 Volts AC. You just have to follow the wiring diagram on the inside of the front door. Note: There are two different diagrams, one for the small control transformer wiring and a different one for the SWCG transformer wiring.
Your pic of the door label is for the new IntelliCenter and not an EasyTouch
Who is wiring you system?
Thanks,
Jim R.