Re: How do you control pump speed from output pressure



Because controlling the speed of a three phase AC motor is difficult
and expensive alternate schemes like installing an accumulator at the
pump should be investigated. You could then use one set of pressure
switches and on off control to keep the pressure in the accumulator
within a suitable band. Then once all member storage tanks are full
and the pump stops running for say 30 minutes or more use a timer to
lock out your pump until it is reset the following night.

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