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Old Grundfos Circ sings like humpback whale on shutoff

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Timco
Timco Member Posts: 3,040
At that age with that type of noise, it's time. The cartridge may be all that needs to be changed...

Tim
Just a guy running some pipes.

Comments

  • D107
    D107 Member Posts: 1,852
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    I'll assume this is not a good thing

    20+ yr old Grundfos UPS 20-42. This unit got jammed at the start of the last two seasons until a medium hammer tap got her going again. Wall wisdom seems to be that old Grundfos circs were known to have low torque on startup. Sings for only a few seconds.

    Anyway, is it time to install the Super Brute II UPS 15-58?

    Thanks,

    David
  • hot_rod
    hot_rod Member Posts: 22,150
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    That's an unusual talent, I'd keep her

    20 years, spend some $$ and get a 15-58 replacement. I'm not sure you would find parts for that model anymore. if so probably not much less than a new pump with a 3 year warranty, 3 speed. anti lock up tickler, etc.

    hot rod
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Brad White
    Brad White Member Posts: 2,398
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    Singing like a humpback whale is one thing.

    When it starts to corral plankton with a bubble net or breaches the surface, give me a call. If it begins signs of obvious mating behavior, call the National Geographic Society hot line....

    Cap'n Bill's Whale Watch boats will probably name yours "Grundy".
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"



    -Ernie White, my Dad
  • D107
    D107 Member Posts: 1,852
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    I'm thinking of releasing it back to the sea...

    Forget the electric usage; you can't imagine the cost of the feeding. A sad day indeed.

    Thanks,

    David
  • Ross_7
    Ross_7 Member Posts: 577
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    Change the pump, Dave....

    Save yourself a headache, and change the pump. 15-58 would be fine. By the way, how old is your car?
    Ross
  • D107
    D107 Member Posts: 1,852
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    absolutely Ross

    There's no other choice here--I've changed out the other two fairly recently. Already have one of the superbrutes --nice circ.

    Thanks,

    David
This discussion has been closed.