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Posted by Gerry on March 08, 2004 at 06:10:32:
In Reply to: vibrations posted by Raymond De Ravet on February 29, 2004 at 11:08:03:
We started noticing a buzzing in the glass of the "control" room, and you could see the radio antenna wiggle, sometimes it was worse than others(could feel it in the the floor), we noticed the worse corresponded to a certain firing rate range. We shut down the unit looked at the forced draft fan, filthy! Cleaned it, no change... sent it out to get balanced - vibrations gone!
I have heard similar stories for induced draft fans as well.
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