On 06/01/2018 15:39, charles wrote:
In article ,
Dan S. MacAbre wrote:
charles wrote:
In article ,
Mike wrote:

My pump has got noisy, it's 35 years old. I propose to replace it.

I'm wary of circulator pumps in the £20-£40 range. Has anybody tried
the CBS Intel 15-60 130, about £70, which claims to be A rated [Though
it seems odd to worry about 50 watts when you are burning 20 kilowatts
of gas.]

The Grundfos competitor seems very expensive, but I expect it's better.

our original Grundfos lasted from 1988 until last year. A good life.


I nearly replaced our 30 year-old Grundfos last year. But after I
opened it up and scraped all the black crust out, I just put it back.
It's quiet and happy again now.

Sadly, someone who came to flush our system, put it back with the shaft at
an angle. The bearings didn't like it.


Surprising. My Grundfos pump lasted about 30 years and the shaft was
deliberately set not to be horizontal as per the instructions. Undoing
the large nuts was very difficult. Job for the vice.

--
Michael Chare