» » Duplex Lift Stations

A typical duplex system for pump-down operation will start one pump at a time with rising level, stop both pumps at the desired low level, then automatically change the starting sequence for the next operating cycle. If the liquid rises above the normal start point due to excess demand or pump malfunction, the idle pump will also start and continue to run until the liquid level reaches the desired low level. Alternating pump operation will then be automatically resumed. An optional high level alarm will sound if the liquid level continues to rise with simultaneous pump operation.



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