Hi all. I have a problem with DE flowing back into the pool through the return. I use a hayward ec 50 bump filter for above ground pool. I see that when the pump is turned off DE is flowing back from the filter into the pump basket, as a result, DE is flowing back into the pool for about 10-15 seconds every time the filter is turned back on. When I vacuum the DE and continue the let the filter run afterwards it appears that no more DE is flowing back into the pool so I don't think there are any issues with the filter tubes, tube sheet or diaphragm.
I already backwashed a couple of times and tubes were cleaned prior to starting this season. When I opened the filter to check tubes it does appear like DE is not coating them but I'm not sure. There was mention of a faulty check valve but I'm not sure. Any ideas?
I already backwashed a couple of times and tubes were cleaned prior to starting this season. When I opened the filter to check tubes it does appear like DE is not coating them but I'm not sure. There was mention of a faulty check valve but I'm not sure. Any ideas?