Swimming pool filtering system

摘要

A swimming pool filtering system of the closed recirculatory type having a series connected strainer, pump and filter is provided with a close coupled pump drive motor having two sets of stator windings for allowing the selection of one of two water circulation rates to achieve more efficient pool water maintenance. A specific circulation rate may be manually selected or periods of selected circulation rates may be automatically programmed using a motor stator that is energized through a timer. Reduced pump speed during periods of little or no use results in substantial energy savings and a reduction of noise pollution during evening hours.