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Thread: Leak at Pump

  1. #1
    Join Date
    Apr 2006
    Location
    Scottsdale, Arizona
    Posts
    526

    Default Leak at Pump

    Hello, I have developed a leak at the connection between my Pentair Whisper Flow pump and the motor. I've checked all the bolt and they are tight.

    I get a squirt of water when the motor starts and then a slow drip. Is there an O-ring or a seal between the pump and motor that could be failing?
    14'x31' kidney 21K gal IG plaster pool; SWCG (Saline Generating System's SGS Breeze); Pentair FNS Plus 48 DE DE filter; Whisperflow 1 HP pump; 8 hours hrs; kit purchased from Ben; utility water; summer: none; winter: none; PF:5.7

  2. #2
    Join Date
    Sep 2014
    Location
    Tucson, AZ
    Posts
    222

    Default Re: Leak at Pump

    Yes, there are several seals -

    lid o-ring
    shaft seal
    impeller o-ring
    diffuser o-ring
    seal plate o-ring

    Without pulling the pump and doing some disassembly, it's hard to know which seal is going. My first guess would be the shaft seal or seal plate o-ring, but that's only a guess.

    Do you feel comfortable pulling the pump and taking it apart?
    16k gal IG gunite PebbleTec (Caribbean Blue), 18' x 36' free form with raised spa/spillway and separate rock waterfall. All Pentair Equipment pad - 3HP IntelliFlo VS / 1.5HP WhisperFlo, MasterTemp 400k BTU/hr heater, QuadDE-100 filter, IC40 SWCG, IntelliTouch/EasyTouch Controls

  3. #3
    Join Date
    Sep 2014
    Location
    Tucson, AZ
    Posts
    222

    Default Re: Leak at Pump

    By the way, how old is your WhisperFlo pump?
    16k gal IG gunite PebbleTec (Caribbean Blue), 18' x 36' free form with raised spa/spillway and separate rock waterfall. All Pentair Equipment pad - 3HP IntelliFlo VS / 1.5HP WhisperFlo, MasterTemp 400k BTU/hr heater, QuadDE-100 filter, IC40 SWCG, IntelliTouch/EasyTouch Controls

  4. #4
    Join Date
    Apr 2006
    Location
    Scottsdale, Arizona
    Posts
    526

    Default Re: Leak at Pump

    I'm totally comfortable with pulling the pump and taking it apart. It's the putting it back together part that I'll probably fail at

    Pump is of unknown age but the motor is 10 years old.
    14'x31' kidney 21K gal IG plaster pool; SWCG (Saline Generating System's SGS Breeze); Pentair FNS Plus 48 DE DE filter; Whisperflow 1 HP pump; 8 hours hrs; kit purchased from Ben; utility water; summer: none; winter: none; PF:5.7

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