Nu Tone ceiling fan noise


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Old 05-31-23, 06:59 AM
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Question Nu Tone ceiling fan noise

I have these original Nu Tone ceiling fans, which the builder probably installed when the house was put up (1966). These work fine and I clean the filters. The one in these pics recently sounded like it was spinning faster, as the whirring noise was higher-sounding than usual. It lasted about 5-10 seconds. Then it was fine. What might be the cause? Is it a concern?

 
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Old 06-01-23, 03:29 PM
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The bearings are dry. Their lubrication has run out.
Sometimes you can oil them with a light machine oil.
Other times the motor is replaced.
I can't read the tag in the picture. The motor should also have a label on it.
 
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Old 06-02-23, 08:40 AM
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I would recommend a replacement and go for the Panasonic. Oiling might help, but it will return.
 
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Old 06-02-23, 08:56 AM
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If it is possible to oil the bearings with machine oil, can it be done without removing the motor? Where on the motor might I expect to find the bearings?
 
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Old 06-02-23, 09:00 AM
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You'll need to remove the unit. The oil location will be along the shaft as it enters the housing. You'll need to lubricate both ends. I doubt you'll be able to reach it installed.
 
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Old 06-02-23, 09:08 AM
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Another possibility is that the damper stuck closed briefly, either the one right on the fan, or the external one. Sometimes they get fouled up with damp lint or dust and don't open and close easily. That causes the motor pitch to change until the damper finally opens.
 
 

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