Longtime lurker, first time posting...... lots of helpful people on these boards.
I see a plastic bag blocking the impeller side of the pump basket on my Pentair WhisperFlo pump. When I release the manual relief valve on DE vertical filter, the plastic bag and loose grass gets suck back down the tube coming from the skimmers and main drain. I can't get the plastic back which is reducing the flow of water into the impeller.
Coming from the ground at my pool equipment site, there is one PVC pipe from the main drain and one PVC pipe from the skimmers. They join together at an adjustable valve where a short PVC pipe goes into the pump basket. The only intake that I can control is the valve directing skimmer and/or main drain water into the pump. There are only three possibilities: 1) skimmer line closed and main drain line open, 2) main drain line open and skimmer line closed, or 3) both lines open.
Any advice on how I can out the stuff in the pump basket without the junk being sucked back into main drain/skimmer lines?
Thanks in advance for any tips you can provide!