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Thread: Pump too smallin

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    Pump too smallin

    Hi,

    I just got a 1.5 hp pump (in the signature) that was recommended by the pool store. It replaced a 2 hp pump that did run everything. However, now the 1.5 hp does not run the 7 returns, waterfall, and fountain. It barely does the returns. Is the pump too small? Could it be something else? Thanks.
    3,000 gallon pool, IG, marcite finish, new equipment: Hayward 100 sq ft cartridge filter, 1.5 hp Hayward SP2602VSP variable pump, Hayward swimpure plus salt chlorination, valves. not sure when it was built, ware tested at pool store

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    Mod Squad JohnT's Avatar
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    Re: Pump too smallin

    Can you verify that you really have a 3,000 gallon pool as your signature says?

    What flow rate are you running your pump?
    TFP Moderator
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    Mod Squad pooldv's Avatar
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    Re: Pump too smallin

    I have a valve that switches water flow between waterfall and pool returns. When I want more waterfall I move the valve to more waterfall and less returns. The rest of the time it is on all pool returns.
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    Re: Pump too smallin

    Yes, that 3,000 is accurate.

    I'm new to this. How do I figure the flow rate?

    thanks,

    - - - Updated - - -

    Pooldv,

    yes, I have adjusted the valves, but I should not have to. When we got this house the entire system ran fine on a 2hp pump. Now it is either the returns, or fountain, or waterfall that can be on.

    Thanks,
    3,000 gallon pool, IG, marcite finish, new equipment: Hayward 100 sq ft cartridge filter, 1.5 hp Hayward SP2602VSP variable pump, Hayward swimpure plus salt chlorination, valves. not sure when it was built, ware tested at pool store

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    Mod Squad JohnT's Avatar
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    Re: Pump too smallin

    How many RPM?
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    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Razorhog's Avatar
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    Re: Pump too smallin

    You have 7 returns, a waterfall and fountain on a 3000 gallon pool? Don't you mean 30,000???
    SLAM * Chlorine/CYA Chart * Pool Math * Pool School
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    mas985's Avatar
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    Re: Pump too smallin

    MaxFlo VS is the wrong pump for all those water features. That is a low head, low flow pump. You 2 HP pump was likely a high head pump which is considerably more powerful than the MaxFlo. The EcoStar would have been a better choice.
    Mark
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    Re: Pump too smallin

    Hi mas985,

    We took off an old 2hp that was leaking and the pool store recommended this variable 1.5hp. They said it will turn the water over well but everything cannot run together.
    3,000 gallon pool, IG, marcite finish, new equipment: Hayward 100 sq ft cartridge filter, 1.5 hp Hayward SP2602VSP variable pump, Hayward swimpure plus salt chlorination, valves. not sure when it was built, ware tested at pool store

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    morzh's Avatar
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    Re: Pump too smallin

    A 3,000 gallon pool is barely enough to have 4 men in it, let alone waterfall and ... how many returns, again? And 1.5HP pump is too large even for 10,000 gallon pool. It can empty 3,000 gallons in like 20 minutes. Has to be 30,000.

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