Old Grundfos Circ sings like humpback whale on shutoff

Timco

At that age with that type of noise, it's time. The cartridge may be all that needs to be changed...

Tim

D107

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

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

Brad White

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".

D107

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

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

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