(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 2 of 2

Thread: Grundfos (or pump?) power usage

  1. #1
    DIY Junior Member glchaparral's Avatar
    Join Date
    Jul 2011
    livermore, Colorado

    Default Grundfos (or pump?) power usage

    I have a 11 year old Grundfos system (controller is a CU301) on a 600 ft well - submersible pump. There isn't much shallow water in the Rockies!

    It has worked flawlessly for the 8 yrs I've owned the place.

    I recently noticed though, my electric bill is 30% higher than last year. I've played around with the breakers, and made many trips to the electric meter, and discovered the meter still spins like crazy with everything off but the well, even when using no water. Conversely, the whole house uses almost no power with the pump off.

    My conclusion is that the well/pump system is pulling power even when I am not using water.

    How can this be possible? BTW, I worked in the power industry for 30 yrs, so I kinda understand power usage, but I don't know what's in this well or control system.

    Thanks for any ideas,


  2. #2
    Jack of all trades DonL's Avatar
    Join Date
    Mar 2011
    Houston, TX


    Welcome to Terry's Forums Gordon,

    You may want to check to make sure that the pressure that you have set on your controller is not higher that the pump can deliver.

    You could have a defective pressure sensor, or controller.

    What is your controller pressure setting at, and what is the pressure that you are getting on the output of the tank ?

    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

Similar Threads

  1. Questions about pump type / usage
    By SLED4FUN in forum Pumps and Tanks Well Forum & Blog
    Replies: 6
    Last Post: 06-07-2011, 03:36 PM
  2. Power Usage
    By s_dash81@yah00.com in forum Electrical Forum discussion & Blog
    Replies: 2
    Last Post: 05-17-2011, 08:09 AM
  3. Best GRUNDFOS recirculator pump?
    By Handiman in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 1
    Last Post: 06-25-2009, 05:09 PM
  4. monitoring power usage
    By atuel in forum Electrical Forum discussion & Blog
    Replies: 29
    Last Post: 02-21-2009, 12:50 PM
  5. Pump Usage
    By sapruitt in forum Pumps and Tanks Well Forum & Blog
    Replies: 1
    Last Post: 08-09-2008, 03:42 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts