Hayward Pro Series High Rate Sand Filtration sytem blast sand for 1 or 2 seconds into the pool each time the filter is turned on.
Doughboy AG 16x24 pool.
After manually vacuuming, I need to turn the pump/filter off to get the lid of the skimmer off vacuum position and back to it's orginal state.
When I turn the pump/filter back on, it blasts what I just vacummed back into the pool!
What a waste of time!
Hayward doesn't seem to know why this is happening.