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Thread: whisperflo pump motor problems

  1. Back To Top    #1

    Join Date
    Jul 2007
    Location
    nebraska
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    whisperflo pump motor problems

    I have a 1 hp whisperflo pump. It stopped working when I shut it off to back wash the system. I dismantled the pump, hooked the motor back up to the power and it still just sat there and hummed. I gave the motor a spin and it started running. When the power was shut off the motor/pump made a screeching sound as it stopped.

    I took the pump to the pool store and they said I could replace the motor ($210) or the entire pump ($410). I have the pump dismantled but cannot get the impeller off the pump motor. Is there a tool that I need to get this off. I am afraid of nable to the unit since it appears to be all plastic.

    Questions
    1. Could this be the seal or a simple bearing somewhere that I can easily replace?
    2. In order to replace the motor how do I get the impeller off the motor shaft? (I have removed the screw and the 4 bolts)
    3. The pool store said I should also replace the "seal". Is this the seal on the motor shaft and is this something I might be able to do?
    Thanks for your help

    20,000 inground
    SWG

  2. Back To Top    #2
    Sorry, I cannot help with equipment, but wanted to say welcome to TFP!

    8000 gallon 20' x 48" round vinyl frame pool, 12" sand filter (don't have the specs on the pump), TF100 test kit
    Handy Links: PoolMath, TF-100 Test Kit, Pool School, CYA-Chlorine Chart
    "Shock" is a process, not a product!

  3. Back To Top    #3
    I can help. At the back of the motor there is a plug, Remove it and you will see the motor shaft. Hold onto that with a 9/16 open end wrench while you unscrew the impeller from the shaft, assuming you removed the screw already. Then behind that you will see the pump seal.

    Buy a pump rebuild kit and it should work fine.
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

  4. Back To Top    #4

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    Nothing wrong with 'cruz's' reply, he's 100% correct. The shaft may take a 1/2" wrench or even 7/ 16".
    Please note the orientation of the shaft seal assembly (the part that most probably failed) so that you install the new one properly! If you need some more help or info on this, feel 'trouble free' to ask
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  5. Back To Top    #5
    mas985's Avatar
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    When a motor just sits there and hums, that is usually and indication that there is a problem with the starter capacitor or governor switch so you might want to check those too.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  6. Back To Top    #6

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    Thanks for the help and I appreciate the welcome.
    I have removed the screw (That took an impact driver) It was really stuck. Now I can't get the impeller off. So you think it is stuck on or is there a puller in the rebuild kit? I already went and bought a whole new pump and motor. My wife was getting impatient.
    Thanks again for the help
    20,000 inground
    SWG

  7. Back To Top    #7
    No puller, it just unscrews. Can't remember,but it may be a reverse thread.
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

  8. Back To Top    #8

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    Jul 2007
    Location
    nebraska
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    Again, thanks for your help. After removing the left handed screw in the center I tried hammering the pulley off. Your suggestion of simply unscrewing the thing was right on. It came off by simply unscrewing the impeller off the shaft. I can't thank you all enough for your help. It is the simple things that get you!
    mfee
    20,000 inground
    SWG

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