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Thread: 2 speed pump question

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    2 speed pump question

    I'm going to install a new 2 speed pentair pump (wfds-4) and it included the Hi/Lo toggle switch on the motor. My question, when swtich the pump speed, do i need to turn off the power first? or i can change the speed when the pump is running?
    - NY Albany ~27000 water
    - In ground Vinyl 18' X 40' X 8' Deep Curved Roman End
    - Pentiar TA 60 Sand Filter
    - Pentair WhisperFlo 1HP Energy Efficient Full-Rated 2-Speed
    - 250K BTU Nat/Elec. Heater

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    linen's Avatar
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    Re: 2 speed pump question

    You can use the toggle only. Just curious, does toggle also have an off position?
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: 2 speed pump question

    I didn't receive the pump yet. From the website it said the switch toggle for high and low speed. I want to know when we change the speed, do we stop the pump first? I can stop the pump from the timer.

    http://www.poolsupplyunlimited.com/best ... 1486/80332
    - NY Albany ~27000 water
    - In ground Vinyl 18' X 40' X 8' Deep Curved Roman End
    - Pentiar TA 60 Sand Filter
    - Pentair WhisperFlo 1HP Energy Efficient Full-Rated 2-Speed
    - 250K BTU Nat/Elec. Heater

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    Donldson's Avatar
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    Re: 2 speed pump question

    From low to high I don't turn mine off and it goes smoothly. From high to low I pause a beat in the off position to let the flow slow, then I switch to low. The hoses seem to hammer a bit if I don't do that. Not sure if it is an actual problem but it's no effort for me to pause a beat so I do.

    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    TFP Guide

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    Re: 2 speed pump question

    Usually these switches have a center Off position. I switch mine from low-off-high and back again pretty quickly with no ill effects
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    bobodaclown's Avatar
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    Re: 2 speed pump question

    I've got just Hi/Low switch setting no problem switching.
    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

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    Re: 2 speed pump question

    So you did switch the speed while the pump is running?
    - NY Albany ~27000 water
    - In ground Vinyl 18' X 40' X 8' Deep Curved Roman End
    - Pentiar TA 60 Sand Filter
    - Pentair WhisperFlo 1HP Energy Efficient Full-Rated 2-Speed
    - 250K BTU Nat/Elec. Heater

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    mas985's Avatar
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    Re: 2 speed pump question

    Yes, you can switch the speed while it is running. Most pools with controllers do this automatically.
    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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    Mod Squad jblizzle's Avatar
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    Re: 2 speed pump question

    Switch with my Superflo does not have an OFF position ... I switch with the pump on with no problems ... now the ProLogic does the same.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Join Date
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    Re: 2 speed pump question

    Mine only has high and low. I have been shutting off to switch to low. Now that I don't have to shut everything down, I will probably switch to low more often.
    Built in October 2011, 16 x 26 x 20 L shaped vinyl IG steel wall pool, Hayward DE pro grid verticle filter 4800 pool, Hayward two speed superpump, 120,000 BTU Pentair Ultra Temp Heat Pump, Aqua Rite Salt system, 8' wide walk out steps, 2 skimmers, 4 returns, 2 main drains, 500 watt underwater light, intermatic mechanical timer

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    bobodaclown's Avatar
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    Re: 2 speed pump question

    Runs 12 hours a day. All except about 3 minutes a day, when I check the pressure gauge to see if I need to clean the filter. It goes from low, to hi, back to low. No issues.
    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

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