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    Found a really cool tool

    RayWohlfarth
    RayWohlfarth Member Posts: 1,742
    in THE MAIN WALL
    I was at the supply house and found this little tool which you hold up to the rear of a Grundfoss circulator and it lets you know if its running. I loved it. I bought one for every employee, even the secretary. Not sure if it works on other circs.

    Ray Wohlfarth
    Boiler Lessons
    Harvey Ramer

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    Comments

    • Gordo
      Gordo Member Posts: 857
      edited November 2017
      I'm not absolutely sure, but I think all that tool does is to confirm that there is AC current to the circulator stator coils. The rotor can still be locked and that gizmo will still spin.

      I know. I was disappointed too.
      All Steamed Up, Inc.
      "Reducing our country's energy consumption, one system at a time"
      Steam, Vapor & Hot-Water Heating Specialists
      Oil & Gas Burner Service
      Baltimore, MD (USA) and consulting anywhere.
      https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
    • Mad Dog_2
      Mad Dog_2 Member Posts: 8,035
      Yes. Had one years ago. Finally snapped off my keychain. Mad Dog
      Consulting by Mad Dog & Matt Jr.
    • RayWohlfarth
      RayWohlfarth Member Posts: 1,742
      Gordo Thats depressing It is supposed to tell rotation also but did not. Mad Dog will keep it in my tool bag Have a great Thanksgiving
      Ray Wohlfarth
      Boiler Lessons
    • Guy_Woollard
      Guy_Woollard Member Posts: 5
      I have had a few of these as well. At least they let you know that the circulator is getting power, at which point you can eliminate the boiler control and/or relay from the troubleshooting. It narrows the issue down to a flow problem.
    • Henry
      Henry Member Posts: 998
      You can get them FREE from Grundfos
    • JUGHNE
      JUGHNE Member Posts: 11,389
      They used to have the big plug in the back, you could check that the rotor was wet, crank start a stuck pump with a screwdriver and also feel with your little finger if it was rotating, (very carefully of course, don't try this at home.)
      Zman
    • RayWohlfarth
      RayWohlfarth Member Posts: 1,742
      Guy it sure beats holding a screwdriver against the circulator
      Ray Wohlfarth
      Boiler Lessons
    • RayWohlfarth
      RayWohlfarth Member Posts: 1,742
      Thanks Henry
      Jughne I have done that both carefully and not
      Ray Wohlfarth
      Boiler Lessons
    • burnerman_2
      burnerman_2 Member Posts: 297
      I have a few they give them out at trade shows Taco Too

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