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    DE shoots into pool after recharge

    Jim, thanks for your thoughts. The problem arose semi-spontaneously. Backflushes worked fine, nothing really changed, and one day the recharge caused DE in pool. I had a professional disassemble+clean+inspect after that first incident. He didn't see any defects, and it did not fix the...
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    DE shoots into pool after recharge

    Allen, thanks for the info. While searching for more details, I found a slightly different pdf on the Praher website: https://www.praherplastics.ca/documents/Praher-MPV-Owners-Manual-MPV031017-Rev-2.pdf This pdf suggests that the multiport itself should be hooked up differently for a sand vs DE...
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    DE shoots into pool after recharge

    The multiport valve says Praher Plastics, Model No. SM20-1. See photos below.
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    DE shoots into pool after recharge

    After backflushing my DE filter and recharging, DE shoots into the pool slowly over the next several weeks. I had the filter professionally disassembled/inspected -- no problems found. I also replaced the multiport valve. The problem continues. My backyard is sloped and the equipment sits...
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    Disappointed with Intelliflo VSF gpm at low rpms

    The filter cleaning was a great victory -- I'm now very satisfied with the Intelliflo performance. Thanks to everyone for helping me solve my problem! Some photos & data are below if you're curious. It was difficult to remove the fins due to lack of clearance (the manual recommends 23" of...
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    How to get credit when donating through a Donor-Advised Fund (DAF)

    Hi friends, TFP has taught me so much and I'd like to donate. I try to do all my donations via a Donor-Advised Fund (DAF) because it simplifies my tax records (*). I found TFP's tax id (it is 81-0726521). Fidelity can match that tax id to an address in North Carolina, and they will mail a...
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    Disappointed with Intelliflo VSF gpm at low rpms

    Yep, JamesW is right. My brand new Intelliflo has a digital readout that reports rpm, watts, gpm, and psi. My filter has an analog gauge. My original post has a table where I reported both values (digital from the pump display, analog from the DE filter gauge). On bypass, the DE gauge was always...
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    Disappointed with Intelliflo VSF gpm at low rpms

    Thanks again for everyone's advice. I updated my signature with equipment model numbers. (My DE filter is a 60 sqft Crystal Water). I also measured my plumbing: most pipes are 2", except to/from spa is 2.5" and the line to the polaris port is 1.5". (There is also a 1.5" line in parallel with...
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    Disappointed with Intelliflo VSF gpm at low rpms

    JamesW -- sounds good. I will disassemble and clean it. I will look up the filter details and post some photos tomorrow. The equipment sits next to the deep end of the pool, centered, about 2 feet away from the pool wall. The pool is 17x32 feet, so the max run to anywhere is probably ~40'...
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    Disappointed with Intelliflo VSF gpm at low rpms

    Thanks for the ideas. It sounds like I need to clean that filter. JamesW -- I updated my original post to add a column for the psi reported by the DE filter gauge. I hope that helps. fyi, before I installed the VSP, the DE filter gauge showed ~25psi when the JHPU2.0 was running right after a...
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    Disappointed with Intelliflo VSF gpm at low rpms

    Thanks for your reply! I will look up the filter details. I have a multiport valve that I can run in bypass mode, which I think will accomplish the goal (measure the flow with the filter removed from the loop) without disassembling anything. I will try that and gather more data. The...
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    Tracking water turn-over with VS pump

    It sounds like you are hyper-optimizing for very little benefit. Figure out the lowest speed to get the turnover you desire, setup the timer to run that long, and just ignore the surplus flow from the water feature. Let's say (wild guess) it takes you 12 hours to turnover at 1000rpm (I've...
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    Disappointed with Intelliflo VSF gpm at low rpms

    I got an Intelliflo VSF installed yesterday (I haven't updated my signature line because I forgot to write down the model number this morning). The pump has a digital readout of RPM, Watts, GPM, and PSI. I recorded some values this morning: RPM Watts GPM PSI PSI on DE Filter Gauge 1000 62...
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    Should I fix CYA (refill) before installing SWG and new pump?

    First time pool owner here (less than 1 year). I just discovered TFP. Since I moved in (last summer) I was using the prior owner's "regular" maintenance company, which was popping trichlor pucks into the auto chlorinator for who knows how long (presumably years). It seems they never measured...