12-07-2008, 10:45 AM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 4,978
Thanks: 0
Thanked 102 Times in 102 Posts
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compressor and the condensing fan motor runs off a magnetic contactor. if the mating surfaces of the contactor don't quite meet intimately the unit will vibrate. also one or two of the poles have a "shading coil" this is a heavy wrap of copper wire that is supposed to reduce or eliminate "eddy currents." eddy currents are currents induced into the iron punchings of the contactor. each lamination of the "iron" is supposed to be insulated from one another.
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