kwt1955 Posted June 20, 2017 Report Share Posted June 20, 2017 My Hayward sand filter was mistakenly left on the "Rinse" with the discharge valve open, and run for about 7 hours. Aside from the loss of water and some added stress on the pump, is their any likely damage to the filter? I have not removed the top to look at the sand, but I see no evidence of sand near the discharge hose. Quote Link to comment Share on other sites More sharing options...
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