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Hi all, for the guys who run more than one return pumps or have a second already installed as a back up , it would be nice to be able to have the duty and stand by pumps switch automatically at user defined intervals (times / days etc.) in order to achieve equal service run times on both units.
Why not just put a timer on the outlet of each pump. You can have the timer come on at any time. I use a timer to run my stenner auto water change dual head pump. You can use an invert function and this will turn off one pump while the other one is running.
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My pumps are RD3s , they are not switched on and off but are ramped up or down via the controller, constant switching of the controllers' power supply can actually result in damage to it.