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Thread: pool opening w a sand filter

  1. Back To Top    #1

    Join Date
    Mar 2009
    Charlotte, NC

    pool opening w a sand filter

    I read elsewhere on TFP re pool opening: “If using a sand filter, carefully add water to filter prior to attaching multi-port gasket”.

    To winterize, I don’t remove anything from my sand filter except the water & the drain plug.
    At the spring opening, am I supposed to unscrew the top somewhere & add water slowly rather than just re-attach the drain plug & then turn the pump on?

    Attached is my filter manual, Pentair Sand Dollar 80.
    Pg 5 & 6 mention “Initial Startup” & states to start in Backwash mode (but they reason they give is to remove impurities from NEW sand) then it says to put in Rinse moode, then Filter mode.

    Next spring when I open, what mode do I start in & do I have to add water to the top first? (it was new last season & the pro who installed it did it all the 1st time)

    Attached Files Attached Files
    19,800 gallons (closed/winter 18,654 gal); plaster; 18x34 Ft kidney bean shape, Depth 3Ft-5Ft. Built 1992
    Pentair Whisper Flow Pump 1HP. Winter safety cover w anchors.
    Sand filter, Pentair Sand Dollar Top Mount Model SD80; Effective Filtration Area 3.5SF
    - FlowRate 75GPM, 8Hr 36,000, 10Hr 45,000, 12Hr 54,000; Pressure Weight 50PSI
    BBB (Hayward Chlorinator when leave town). Polaris 360 cleaner.

  2. Back To Top    #2

    Join Date
    Dec 2009
    Central Massachusetts

    Re: pool opening w a sand filter

    No, you dont have to add water. Just put the multiport on filter and you are good to go.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

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