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Thread: Running my Pump

  1. Back To Top    #1

    Join Date
    May 2013
    Location
    CT
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    17

    Running my Pump

    I was wondering how often I should run my
    pump.I just got the pool two weeks ago and
    just got the electric hooked up two days ago.
    I've been running it 24 hrs non stop on low.
    It is a 2 HP power pump and I use filters.
    15600 AG
    Filter Cartridge
    Waterway HI-FLO 48 2 Speed
    HI-250 GPM,LOW-144 GPM
    BBB,Leslie DPD Tester

  2. Back To Top    #2
    BoDarville's Avatar
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    Jun 2012
    Location
    DFW, Texas
    Posts
    3,840

    Re: Running my Pump

    rigger7:

    Welcome to TFP

    How long you run the pump depends in part on the size of your pool, whether you have a SWG, whether your pump is a single-speed, 2-speed, or multi-speed, and bather loads to name a few. Please add information about your pool and related equipment to your signature as that will allow us to provide better advice. Here's how to do it: http://www.troublefreepool.com/what-...ns-t10341.html

    With that said, most people tend to run their pumps longer than necessary. When I switched to BBB, I used this method to determine my pump run time: http://www.troublefreepool.com/pool-.../pump_run_time. You may be surprised how much you can cut back on the pump run time by following this method and by keeping the water properly chlorinated and balanced.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  3. Back To Top    #3

    Join Date
    May 2013
    Location
    CT
    Posts
    17

    Re: Running my Pump

    Just checking what I came up with,
    I used the run time info on Pool School
    and the pump GPM info that Waterway has
    on their website and I came up with a 108 minutes
    would cycle through 15555 gal of water,does this
    sound right?
    15600 AG
    Filter Cartridge
    Waterway HI-FLO 48 2 Speed
    HI-250 GPM,LOW-144 GPM
    BBB,Leslie DPD Tester

  4. Back To Top    #4
    BoDarville's Avatar
    Join Date
    Jun 2012
    Location
    DFW, Texas
    Posts
    3,840

    Re: Running my Pump

    Your actual flow rate (GPM or GPH) will depend on the length and diameter of your plumbing system and the net elevation change of the water. Water moving from a high location to a low location has what is known as a static head gain while water moving from a low location to a higher one has a static head loss. Most manufactures of pumps include head curves in their pump manuals. The curves have two axes, Feet of Head (a.k.a, feet of water) vs. Gallons per Minute (GPM). The longer the feet of head, the lower the flow rate. It is difficult to get a precise flow rate for a given pump/filter/pool system without a flow meter. If you want to dig into this relationship a bit deeper, check out this article: http://www.troublefreepool.com/hydra...head-t915.html

    The good news is you do not need to know the exact GPM to find your ideal run time. Simply cut back on your current run time until you notice a change in the clarity of the water. At that point, increase the run time to the previous time setting. Of course, all of this assumes that everything else was held relatively constant (no algae or similar organic outbreaks). Once you find your ideal run time, you may need to make adjustments for abnormally high bather loads and/or debris levels. Also, keep in mind that maintaining proper FC levels and maintaining overall water chemistry balance plays a large role in the clarity of the water.

    Using this method, I have reduced my pump run time to about 1/3 of what it was previously. This approach has worked well for me as the pool has never looked cleaner.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  5. Back To Top    #5
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,486

    Re: Running my Pump

    I would ignore GPM and turnover. It really isn't a good indicator of run time despite the pool school article. Some pools require 1/2 turn like mine and some much more. There are basically two objects for run time:

    First, to add chlorine to the pool to reach the FC target. For BBB, this is basically only about 30 min

    Second, to remove debris from the pool surface (skimming) and bottom (vacuuming). Very little debris is actually suspended in the water. Most will either float or sink.

    I would start with 4 hours of run time and see if that is enough and adjust from there.

    Also, you might want to have a read through this study:

    Pump Run Time Study
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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