Tinkerer05 Posted May 2, 2015 Report Share Posted May 2, 2015 I have a 2-speed 2.5HP Pentair pool pump. It runs fine on high speed but when I switch it to low speed, within a minute the water flow dies. I changed the bearings and the pump runs at the proper RPM at high and low speeds when installed in-line with water flowing (under load). Does anyone have any ideas what may be causing this drop in flow? Many thanks. Quote Link to comment Share on other sites More sharing options...
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