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Thread: Whinning Pentair WhisperFlo Pump

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    Whinning Pentair WhisperFlo Pump

    It's always something. Added the Liquidator this spring after switching to BBB method last year and my pool has never looked so good. We're in the middle of a heater install (heater is installed and plumbed, just waiting for the gas company to run the gas line for supply) and this afternoon walk out and hear the motor whinning. I know this morning when I tested and checked the pressure it was running just fine.

    I bought the pump exactly 6 years ago (Sept 2007). We generally have the pool open from mid-April till the last weekend of Sept (expect to extend to Oct now with the heater). I run the pump 24/7.

    Video in order to hear the whinning.
    http://youtu.be/QeE2XJsegnc

    Attached a few images of the pump labels if that helps.

    My inclination based on searching and reading is bearing failure. I'd like to just replace the motor if I could. Not sure how long it would be to repair the motor, if I could let it limp along until I closed the pool then I'd have more down time. I've never not operated it 24/7 so would need to figure out the amount of time for proper chlorination and filtering. I suppose I could order a new one and get this one repaired as a backup. I guess even getting a new motor I'd likely not even get a chance to install it until the end of the season anyway.

    The last Pentair I had went 10 years. A little disappointed to hear this at only 6 years.

    Any expert feedback or advice?
    Attached Images Attached Images
    Neil

    22,000 gallon vinyl in ground (17ft x 33ft) built in 1996, Pentair Whisperflo 1HP [2007] running into a Pentair Sand Dollar SD80 (75 GPM flow) [2007] and Rheem 266A Digital Gas Heater [2013], Liquidator [2013], full sun. And a UDS.

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    Smykowski's Avatar
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    Re: Whinning Pentair WhisperFlo Pump

    How long until you plan on closing? If it just started the whine, you're probably ok to limp it til the end of the season, you'll just have to deal with the noise.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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    Re: Whinning Pentair WhisperFlo Pump

    I'd like to stay open another 6 weeks.
    Neil

    22,000 gallon vinyl in ground (17ft x 33ft) built in 1996, Pentair Whisperflo 1HP [2007] running into a Pentair Sand Dollar SD80 (75 GPM flow) [2007] and Rheem 266A Digital Gas Heater [2013], Liquidator [2013], full sun. And a UDS.

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    Smykowski's Avatar
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    Re: Whinning Pentair WhisperFlo Pump

    I'd like to hear what others have to say, but if it's me, I'd limp until the pool is closed and take care of it in the off season.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Mod Squad jblizzle's Avatar
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    Re: Whinning Pentair WhisperFlo Pump

    I would suggest ordering a new 2-speed motor to have on hand if the current one dies. Then either repair it as a back up or take it to a recycling center. Although once you have the new motor on hand it is only an hour job to switch it out and start saving $ on electricity by running on low (you will need to add a switch though to pick speeds.).

    Is the current motor wired for 230V? As nearly all the 2-speed motors are 230V.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Whinning Pentair WhisperFlo Pump

    Hmmm, not sure on how to add the switch though. Whether that means you add a switch in line or if I'd have to add another outlet onto the wall. What's the switch do, only power it with one of the hot leads? I'd be all for having the lower speed for saving money, although since I run it all the time I guess that just means it would turn the pool over much more slowly.

    Not sure if I can ask this question, but reputable source for the motors online? I'll make a few local calls as well. I was hoping to see online the item so I know the part numbers and the proper set of gaskets/orings.
    Neil

    22,000 gallon vinyl in ground (17ft x 33ft) built in 1996, Pentair Whisperflo 1HP [2007] running into a Pentair Sand Dollar SD80 (75 GPM flow) [2007] and Rheem 266A Digital Gas Heater [2013], Liquidator [2013], full sun. And a UDS.

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    Mod Squad jblizzle's Avatar
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    Re: Whinning Pentair WhisperFlo Pump

    Do you have a timer at all at this point? You would need to have a switch between the power source and the motor. You can find switches that install right on the back of the motor or you could just use a 3-way light switch in a junction box. If you do the later, you would need to add an additional wire from the switch to the motor. The switch just selects the low or high speed.

    There is no reason you need to be running your current pump 24/7 ... just switching to low speed 24/7 would lower your electrical use to 25% of now. But even that is likely more than you need.

    Confirm you current motor voltage.
    Ideally you want a 1.25 SF HP motor, but that may be the 3/4HP 2-speed motor which comes at 115V.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Mod Squad jblizzle's Avatar
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    Re: Whinning Pentair WhisperFlo Pump

    If you are currently 115V, then the direct replacement is a B2981
    If you are currently 230V, then you could use the slightly larger B2982 with your current impeller with no issues. OR an original Pentair motor with the switch included is 356630S

    I could not find the smaller 3/4HP pump from Pentair with the switch included.

    And the Go-Kit32 includes all the seals in the pump including the required shaft seal.
    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
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    Re: Whinning Pentair WhisperFlo Pump

    I just bought a Pentair 356630S (with switch) to replace my failed motor last week for around $230 shipped online. Your current motor should last 6 weeks, my old motor started whining at the beginning of the season this year and finally failed 1 week ago. Just make sure you spend the extra money on a 2-speed motor when you replace it, they are much quieter and will save you $$$ over the life of the motor.
    16,000 gallon, 1 hp 2-speed SuperFlo pump, Intellichlor IC40 Salt Chlorine Generator, Pentair Clean & Clear 240 Filter, Mastertemp 250 Heater, Vera Z-Wave home automation, Intermatic CA3750 for pump control

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    Re: Whinning Pentair WhisperFlo Pump

    You guys absolutely rock.

    I've found the 2 speed motor online for the $230 shipped. I just need to confirm the voltage today and then it seems like I might as well pull the trigger and get it taken care of, especially since I like to run all the time and can probably pay for the pump just by the electricity I save! I don't have a timer and wasn't too interested in putting one on. I might have to look into that in the future.
    Neil

    22,000 gallon vinyl in ground (17ft x 33ft) built in 1996, Pentair Whisperflo 1HP [2007] running into a Pentair Sand Dollar SD80 (75 GPM flow) [2007] and Rheem 266A Digital Gas Heater [2013], Liquidator [2013], full sun. And a UDS.

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    Re: Whinning Pentair WhisperFlo Pump

    Mine whined for 4 months before I upgraded. Amazing how long they will go.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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