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Thread: Teach me how this works... please.

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    Teach me how this works... please.

    I'm still learning, pardon me...

    In the bottom of my U3 I have two holes... one is suction (where I now plug in my pool vac.) and one is, I assume, the "center drain"...

    1) Is it safe to assume that the other one (non-suction) is for the center drain?
    2) I recently bought an automatic vacuum plate (to switch between robot and skimmer) and it says to plug that second hole (non-suction)...

    Can anyone confirm and please explain exactly what that second hole does? And what size the plug is? It appears threaded (?) (but not sure)...

    Any other information would be a huge help.

    Thanks
    Pete
    16000 Gal. Kidney / Gunite / SE Florida / Taylor K2006 / Stenner
    Jandy CS100 / Sta-Rite U3 Skimmer / Pentair Great White / Single Floor Drain / Single Return / Hayward SP2300VSP
    -------------------------------------------------------------
    I'm still learning and I know nothing!.. I'm loving the Stenner!

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    Mod Squad Bama Rambler's Avatar
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    Re: Teach me how this works... please.

    What is a "U3"? I assume it's a skimmer, but I don't want to guess. If it is it should be 1½" pipe threads.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: Teach me how this works... please.

    Yes. A Skimmer... can you explain the rest?
    16000 Gal. Kidney / Gunite / SE Florida / Taylor K2006 / Stenner
    Jandy CS100 / Sta-Rite U3 Skimmer / Pentair Great White / Single Floor Drain / Single Return / Hayward SP2300VSP
    -------------------------------------------------------------
    I'm still learning and I know nothing!.. I'm loving the Stenner!

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    Re: Teach me how this works... please.

    If you search for "Sta-Rite U3", you can download an instruction sheet. In the diagrams, they show a generic plug, which leads me to believe it might be a universal part which a pool store might stock. In the instructions on how to vacuum, they mention a vacuum plate (which is also shown on the parts list).

    The second hole is to prevent damage to your pump so that if your basket gets clogged, it can still pull water from your main drain.
    ============================================================ ===========================================
    12,000 gal. IG Colorquartz, 1.65hp Sta-Rite with 2-spd motor, 300sf cartridge, disabled SWG, AquaLogic P4, Polaris 280, gas+solar, 6' sheer descent with dedicated pump

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    Mod Squad jblizzle's Avatar
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    Re: Teach me how this works... please.

    Quote Originally Posted by bignick
    The second hole is to prevent damage to your pump so that if your basket gets clogged, it can still pull water from your main drain.
    For that to work you would need to have a diverter covering the holes under the basket.

    The spaceship:


    Or Twinkie:
    Jason, TFP Moderator
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  6. Back To Top    #6

    Re: Teach me how this works... please.

    Just printed the U-3 skimmer pdf... And, I'll say it, I'm baffled...

    I do NOT have a "Equalizer Outlet" -- I do have the second hole (not plugged). I wonder if it is for the main drain???

    I do NOT have a Check valve (spaceship or twinkie) of any kind. I have, from the top down:
    The frame and grate kit (cover), the basket, and two holes... one that is suction and one that is "I don't know"

    Anyone know the proper way to us the automatic skimmer plate. From the instructions it says to plug that second hole (non-suction)... I'm guessing you have to do that because I can't get ANY suction to the plate at this time (no plug)...

    What say you?
    16000 Gal. Kidney / Gunite / SE Florida / Taylor K2006 / Stenner
    Jandy CS100 / Sta-Rite U3 Skimmer / Pentair Great White / Single Floor Drain / Single Return / Hayward SP2300VSP
    -------------------------------------------------------------
    I'm still learning and I know nothing!.. I'm loving the Stenner!

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    Mod Squad jblizzle's Avatar
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    Re: Teach me how this works... please.

    Do you have any valves at the pump to select the floor drain? If not, then it is pretty safe to assume the other hole goes to the floor drain and you will have to plug it to be able to use the skimmer plate for the vacuum. If you do not, the pump is likely pulling some water from the floor instead of enough through the vacuum.

    You may want to buy yourself one of the diverters (I have never seen the twinkie in person, so not sure what skimmer uses it).

    EDIT: See Figure 5 in the PDF for you likely setup ... it also shows the spaceship (part #3).
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  8. Back To Top    #8

    Re: Teach me how this works... please.

    Understood. Nope, no valves. Looks to be a 2" plug based on the part number (08655-0017) -- that should be a standard pipe thread, correct?
    16000 Gal. Kidney / Gunite / SE Florida / Taylor K2006 / Stenner
    Jandy CS100 / Sta-Rite U3 Skimmer / Pentair Great White / Single Floor Drain / Single Return / Hayward SP2300VSP
    -------------------------------------------------------------
    I'm still learning and I know nothing!.. I'm loving the Stenner!

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    Mod Squad Bama Rambler's Avatar
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    Re: Teach me how this works... please.

    That's correct, it'll be standard pipe threads.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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