Question about Refrigerators
These fan motors use a sintered bronze-graphite 'sleeve' bearing that has a nasty habit of getting gummed up until the motor's power is no longer able to start the rotation.
In modern motors, this isn't a fire hazard due to the electrical design making them 'impedance protected' and this limits the amount of heating that can occur.
If you can gain access to the motor, spray both ends of the shaft with any penetrating lubricant (WD-40 for example) and turn the blade by hand to free it up. These lubricants serve to remove gummy deposits and corrosion but evaporate quite quickly making them unsuitable for purposes of lubrication.
The bearing composition eliminates the need for lubricant but they can bind from a buildup of the graphite in the sleeve.
Posted on May 20, 2011
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Posted on Jan 02, 2017
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