Taco 006 BC4 Circulator pump running 24/7?

Discussion in 'Water Heater Forum, Tanks' started by scottall, Mar 17, 2010.

  1. scottall

    scottall New Member

    Messages:
    2
    Location:
    CT
    Hi, the pump runs literally all the time and it has a bit of a rattling sound to it. Amd it is hot to the touch. And, the first shower of the day never gets truly hot. Is the pump failing? If I recall, the impeller was replaced once a long time ago. I would like to do it myself if that is what it needs. I understand the cartridge is easy to obtain and replace. If this is the correct path, can you guide me on stopping all water flow to the pump while I swap the cartridge and the O-ring? Thank you for any guidance you can provide.
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,537
    Location:
    Cave Creek, Arizona
    It is probably the pump. IF there are valves on both sides of the pump shut them off and replace the cartridge.
  3. scottall

    scottall New Member

    Messages:
    2
    Location:
    CT
    Thanks for the reply. One line runs straight into the boiler and the other straight down into the hot water tank, no valves on either.
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