Search results

Thank you all very much for your suggestions, comments and images, now I have all the necessary information to know what not to do and what I can try to do. Merry Christmas and a Happy New Year, if we can say that.

This is what I was afraid could happen, thank you, SpecialK, now I know what I can't do.

I thought I observed that the bearings are in the "sleeve" of the stator so, if the shaft of the "old" is fine, it is very likely that changing the rotor from the "old" to the "new", everything will be solved . I'll wait for spring to come ... or until the "crack" occurs. Thanks a lot,

Hi, JimCrow, In the figure that you have sent me, which are the bearings?. It occurs to me that if the bearings are in the stator, perhaps by placing the "old" rotor (with its shaft and immovable impeller) in the new stator, the problem may be solved. Any suggestions?

Too risky, I would need someone who has had a similar problem with any of the myriad Grundfos pumps that feature the same type of impeller to shaft attachment. The noise is as if something (invisible) tripped internally (it is not a constant noise as it usually happens with worn bearings about...

Why not? Unless there is an impediment in fixing the impellers to the respective shafts. I am looking for someone who has had to replace an impeller in these types of pumps. I do not want to risk breaking something, at this time, outside my house we are at 2ºC and for tonight temperatures of up...

The two pumps are dimensionally and electrically identical. The only differences are, the old one was manufactured in 1995 and the new one in 2015 and, internally, the water inlet (center of the impeller) is wider in the new one, probably to strengthen the plastic impeller since, in the old one...

In my heating system, I have a UPS32-80 attached to a very specific TEKMAR cast iron block. The pump makes a deafening noise so I bought a new UPS32-80 to replace it. Unfortunately, the new UPS32-80 has a plastic impeller whose water inlet has a larger diameter which prevents the new pump from...