My neighbor recently got a Pentair Intelli SWG added to their pool. She is struggling with low flow. The pool store that she uses (working on breaking her habit of that) has her backwashing her DE filter frequently, replaced fingers, etc. I stopped over today to take a look. While I am no where near an expert, to me, I see a plumbing issue potentially causing this. Her pressure runs about 10 consistently.
The water comes out of the filter and towards the heater, where she has it valved off:
It then runs to a tee, which splits the flow to the two inlets. One returns to pool, the other to the SWG and then to the pool. I feel this is problem #1. The second thing I do not think is good is the hard 90 that is placed immediately exiting the SWG as it returns to the pool.
I would appreciate some input from an expert as to validation, or other potentials from a plumbing perspective.
This poor lady already has over $600 in STUFF that the pool store told her she needed. This makes me sick and I am trying to help her, but it is a difficult job to convince. People are conditioned that this is the way it is with chemicals/costs...