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How can reduce the noise made by my Grundfos ups 15-50 pump?

My Grundfos UPS 15-50 pump has be come very noisy at times. Is there an easy way of stopping the extra vibration which is intermittent but increasingly lasting for longer periods of time?
Kate, January 2010
Ensure the water is clean in your system, also that there is no blockages. If its an old system theres a chance you have a blocked cold feed.

Henry, January 2010
replace it

Ian, January 2010
link Click here to see other fixes for Grundfos.