Hello, first time poster, hoping someone can help me figure out what has gone wrong. We replaced a cracked sand filter last fall with a new DE Pentair Quad 80 filter. Kept pool operating over the winter. Pressure never increased over starting pressure of about 18psi. Performance seemed to be deteriorating over last month--sediment settling in the pool. Had gone to the pool store that did the install a couple months ago to ask about lack of pressure increase--they suggested that newness of install, and size of filter relative to pool size, I might not see much of an increase, but spring with tree crud getting sucked in I likely would.
Decided to do a cleaning yesterday. Did an alternating backwash and rinse routine and then opened the filter per instructions. All four cartridges were ruptured open at the top. From what I've gathered from online reading, if incorrectly plumbed, the cartridges can be popped--and given the "hybrid" nature of the product--it's supposed to be plumbed like a sand filter rather than a conventional DE filter, installation mistakes might be more likely. But I can't figure out if that's the case in my situation. Not sure if the cartridges exploded when I was backwashing, or if they were broken from the start and if that's the reason the pressure never increased. Any insight would be greatly appreciated!! If any addl. pics would be helpful, I'd be happy to add them.
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Decided to do a cleaning yesterday. Did an alternating backwash and rinse routine and then opened the filter per instructions. All four cartridges were ruptured open at the top. From what I've gathered from online reading, if incorrectly plumbed, the cartridges can be popped--and given the "hybrid" nature of the product--it's supposed to be plumbed like a sand filter rather than a conventional DE filter, installation mistakes might be more likely. But I can't figure out if that's the case in my situation. Not sure if the cartridges exploded when I was backwashing, or if they were broken from the start and if that's the reason the pressure never increased. Any insight would be greatly appreciated!! If any addl. pics would be helpful, I'd be happy to add them.
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