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Thread: Pentair Sta-rite 1.5 hp pump

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    Pentair Sta-rite 1.5 hp pump

    I was just reading another threat about high electric bills and pool pump run time and speed settings.

    My bill is FPL and when running pool and A/C the bill is around $200 a month.Is there a way that I can turn my single speed pump into a 2 speed or variable speed? The pump actually uses morejuice than my A/C does.It would be nice to lower the bill.
    11000 gal L shaped gunite pool with and aggragate plaster
    Pentair cartridge filtration with 1.5 hp pump
    only have 3 returns and one dedicated vacuum line
    manifold to pump is three valve

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    Re: Pentair Sta-rite 1.5 hp pump

    The cheapest and easiest solution would be to replace the impeller (and possibly the diffuser) with a 3/4 hp impeller. That would allow your pump to run cooler and use less power by reducing the workload by reducing the flow rate. Other than that, you would need to go to a two speed or variable speed pump.

    http://www.pentairpool.com/pdfs/DuraGlasOM.pdf

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    Re: Pentair Sta-rite 1.5 hp pump

    There must be some sort of conversion kit that can turn this pump into 2 speed or variable speed........What about an external speed dial...kind of like an electrical throttle?

    I'm not flush enough to drop $800 - $1200 on a new pump
    11000 gal L shaped gunite pool with and aggragate plaster
    Pentair cartridge filtration with 1.5 hp pump
    only have 3 returns and one dedicated vacuum line
    manifold to pump is three valve

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    Re: Pentair Sta-rite 1.5 hp pump

    If your motor is a single phase Permanent Split Capacitor induction motor, then you might be able to use a 220V Optidrive E2 to control the motor speed. If it is an A.O Smith motor, the motor "Type" might be listed as "CX", which would indicate a PSC (Permanent Split Capacitor) switchless design. However, the cost of the controller ($525.00 list) is more than buying a new motor and impeller.

    http://www.anaconsystems.com/text/opti_e2.html

    http://www.anaconsystems.com/data/opti_e2.pdf

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    JasonLion's Avatar
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    Re: Pentair Sta-rite 1.5 hp pump

    You can always change out the motor, leaving the rest of the pump in place. Two speed motors are available to fit almost any pump. You wan to get a motor that is the same HP on high speed and the same frame size.
    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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    Mod Squad Bama Rambler's Avatar
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    Re: Pentair Sta-rite 1.5 hp pump

    As Jason said, A simple motor change is the most cost effective way to get a 2-speed pump. Be sure to use the HP x SF to get the motor size. For instance, if you have a 1½ hp with a SF of 1, you could replace it with a 1 hp with a SF of 1.5.

    You're going to have to take the pump apart to change it so be mindful of the o-rings and gaskets. Personally I'd change the shaft seal while I was in there.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Brentr's Avatar
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    Re: Pentair Sta-rite 1.5 hp pump

    jaydar I would be interested in which way you went. I have considered replacing my 1.5hp Sta-rite with a 2 speed.
    6,000 gal, IG free form,Beach Series Antigua by Marbletite Pebble finish,Sheer Descent, IG Fountain, Dolphin / Mermaid Statues,Dura- Glas 1.5hp pump,Hayward Pro-grid DE4820, Aqua Rite SWG with T-Cell 15,Heat Siphon Heat Pump DX 5.0 109,000 btu, Pool Cage, 1800sq ft Tremron Estate Pavers,Aquatherm Ecosun Solar Panels 192 sq ft with GL-235 Controller,Pentair IntelliBrite, Apollo Magnetic Stirrer Our New Poolbuild, Jacksonville, FL yr 2009 Solar install Outdoor kitchen upgrade

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