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Thread: Cartridge Filter Pressure Fluctuating after cleaning

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    HouTX's Avatar
    Join Date
    Apr 2015
    Katy, TX

    Cartridge Filter Pressure Fluctuating after cleaning

    I cleaned my filter for the first time since purchasing the home in December. Prior to cleaning, the pressure was at 18psi, now it flicks back and forth between 16 -20psi. The needle drops to 16 then rises to 20psi within a few seconds, then it drops abruptly to 16psi. I have an in-floor cleaning system, which has worked intermittently (I think) but now appears to be working. The pressure changes appear to coincide with the zone change on the floor cleaning jets. One of the jets blows a lot of water when it comes on. Not sure if this is of significance. Water level is fine and I saw no visible obstructions in the skimmer basket. Any trouble shooting help will be sincerely appreciated…..
    30k Gal, IG, PebbleTec, Jandy: CL460 Cartridge Filter, SHPM2.0 Pump (Filter+Spa), SHPM1.5 (Waterfall), spill-over SPA, PLC1400 SWG, LXi400 Heater. Polaris Caretaker Infloor Cleaning system, Jandy PDA-PS-8 remote, Taylor K-2006 Test kit

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Cartridge Filter Pressure Fluctuating after cleaning

    That sounds mostly normal. I would expect the pressure to fluctuate when an in-floor system changes zones. However, usually an in-floor system will stay on a single zone for quite a bit more than "several seconds".
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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