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Thread: Pump Sizing/Selection Help Needed

  1. Back To Top    #1

    Join Date
    Jun 2014
    Location
    Bellingham, WA
    Posts
    6

    Pump Sizing/Selection Help Needed

    Hi Everyone,

    We bought a house with an existing above ground pool (specs in my signature). TFP has been a huge help in sorting out chemistry. Now our pump has died and I'm hoping you can help me choose a new one. I've read a number of great technical posts here but they're above my paygrade. I called the local pool stores and they were perfectly unhelpful. I haven't been able to sort out how to choose a pump from the dozens out there that will best match our filter and setup.

    We run our pool for about 4 months a year and have cheap power (~$0.10/kWh). I want an efficient setup but don't want to pay more than the efficiency is worth. I've read that slower pumping is best for filtering - how much flow do I need for vacuuming the pool? What size pump do I need to accomplish that? I have a 120V timing system in place and external strainer basket.

    Thanks in advance for your help!

    Dana
    18,000 gal above ground vinyl
    Pentair Sand Dollar SD60 sand filter - 60gpm - 2.3sqft

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    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: Pump Sizing/Selection Help Needed

    You can probally get away with in 3/4hp pump/motor combo. They even make them in 2-speeds. The motor has died, not necessarily the pump. You have a wet end (the pump) and the dry side (the electric motor). You can usually just replace the motor and save some money. Can you provide a model of the pump/motor or post a picture.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  3. Back To Top    #3

    Join Date
    Jun 2014
    Location
    Bellingham, WA
    Posts
    6

    Re: Pump Sizing/Selection Help Needed

    Something broke inside the pump and the motor bearings were shot so I'm looking for a total replacement. I'd appreciate any thoughts on what pump would be appropriate for matching with our filter. Also wondering what flow rate I need for vacuuming.

    Thanks!

    Dana
    18,000 gal above ground vinyl
    Pentair Sand Dollar SD60 sand filter - 60gpm - 2.3sqft

  4. Back To Top    #4
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: Pump Sizing/Selection Help Needed

    Hello Dana,
    How much would you like to spend?
    http://www.inyopools.com/Products/18...52Z4BtLPHw_wcB

    Their are probably cheaper and better recommended, but it was a quick search to give you an idea.

    Most of the time run it on low, energy savings, high speed when you need to vac.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  5. Back To Top    #5

    Join Date
    Jun 2014
    Location
    Bellingham, WA
    Posts
    6

    Re: Pump Sizing/Selection Help Needed

    Thanks bobdaclown.

    I've read on this forum the importance of matching a pump to a filter and pool. I can't find the specs for head loss on the SD60 filter. Without that I don't know how to ensure the pump will provide the right gpm for the filter. Can anyone help me pick a pump that's going to work well with our specific setup?

    Also, what minimum gpm do I need to run a vacuum?

    Thanks

    Dana
    18,000 gal above ground vinyl
    Pentair Sand Dollar SD60 sand filter - 60gpm - 2.3sqft

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