New Construction...help with well vibration!

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by JDean, Aug 11, 2018.

  1. JDean

    JDean New Member

    Joined:
    Aug 11, 2018
    Location:
    Bridgeport, NE
    i have just recently built a new home in western Nebraska. had a well drilled with a M 1.5 3 phase 25GS15 Gould’s pump. Since day one of operation, we hear a loud humming/vibration whenever we turn the water on to any part of the house...the humming sounds like somebody driving into the yard when your sitting in the house. I have felt the main water line coming into the house and you can feel some vibration. We also experience some pressure drop when we go to use the shower...we will turn shower on and it will come on with pressure, then lose pressure to almost nothing for 30-60 seconds...then gain pressure back to full and everything will be fine. Any help with these problems is greatly appreciated.
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    To be clear, the humming happens when you use water, and not just when the pump runs, right? How big is your pressure tank?

    Your water static level is what, 100 ft down?
     
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  4. JDean

    JDean New Member

    Joined:
    Aug 11, 2018
    Location:
    Bridgeport, NE
    The humming happens when we turn on any water source...shower, flush a toilet, turn on a faucet...it’s like the motor/pump turns on that’s when we hear the humming...static level is very close to 100ft.
     
  5. plumber69

    plumber69 In the Trades

    Joined:
    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    I'd start by taken the cover off your shower fixture. see if there's shut offs and isolate it
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    How big is the pressure tank? If you don't know, try posting a photo that includes that and the pressure gauge, pressure switch, and the line from the pump.

    If you turn off the pump while there is good pressure, do you get a noise when you draw water?

    I am bothered by the 30 to 60 dead time, but I think knowing something about your pressure tank setup and area could help form an idea.
     
  7. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    It is a variable speed type pump. Vibration is one of the problems. When you vary the speed it is going through the resonant frequency of every component in the pump. With a normal full speed pump it is balanced to run with no vibration at 3450 RPM. Start varying the speed, and you get vibration at different speeds, called critical speeds. If the vibration is bad enough they can lock out or skip the resonant frequencies. Also the low pressure after you start using water sounds like the ramp up speed of the drive is not fast enough. Too fast it pulses, too slow you see delay in water pressure.
     
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