That's right. As I said, I doubt it would be relevant to your problem anyway.Was going to post a picture of the label but assume not needed now!
BTW, have you managed to cure it?
Discuss Singing noise related to water pump in the Plumbing Jobs | The Job-board area at PlumbersForums.net
That's right. As I said, I doubt it would be relevant to your problem anyway.Was going to post a picture of the label but assume not needed now!
Interesting & nothing else was done to the system ?Problem solved. Singing noise completely gone. Plumber replaced the Grundfos with a DAB 40-70/130. Whether the Grundfos was faulty or there was an incompatibility with my system we will never know. Thanks for all support.
Interesting, as you say!Interesting & nothing else was done to the system ?
Thanks for letting us know as others may come across the same thing.
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