On 7/9/14, 10:26 PM, firstname.lastname@example.org wrote:
Well, I unscrewed the plastic grille from my Lasko 3733 20" box fan and
there it was, a permanent split phase motor with a 250 V 4.0 microfarad
capacitor. (Horrible fan. I keep it in the kitchen because I can hang
it from the ceiling in a jiffy to blow smoke out the window before it
stinks up the house.)
How would you switch speeds with a shaded pole motor?
The motor heats up, that expands the bearings slightly and the motor starts
spinning. WD40 everything in sight in the motor, and apply some spray 3/1
oil any place you can get to near the bearings. Leave it outside for a fe
w hours to dissipate the small, and then enjoy the fast-moving fan again.
On 7/9/2014 10:30 PM, email@example.com wrote:
and the motor starts spinning. WD40 everything in sight
in the motor, and apply some spray 3/1 oil any place you
can get to near the bearings. Leave it outside for a few
hours to dissipate the small, and then enjoy the fast-
moving fan again.
For about two days, till the WD and three in one dry out.
I had the same fan. It lasted several more winters (I used it in front of
the fireplace insert). It was amusing to watch the SLOOOOOW turns and then
at some point see it whirling away full speed. It did not get hot, smoke,
make noise, or burn the place down (man, I live dangerously!). Eventually,
it stopped going, even with a bit of a helpful spin from me. So, I got my
money's worth, and then some.
Well, that makes some sense except that I know for sure that I couldn't
replace my antique (might just be old) fan for $20. Yes, I could get a $20
fan but it sure wouldn't be a direct replacement for the CFM's that that
thing moves. The OPs box fan? Maybe.
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