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Posted by Harold hydronicnetwork.net on January 28, 2004 at 08:18:30:
In Reply to: Re: Circulator signs posted by Richard Spenrath on January 28, 2004 at 07:14:47:
I've heard like sounds from circulators that have the thrust bearing worn, so it squals as the impeller is unloaded and moves toward the pump surfaces.
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