Re: Old box fan and 'Lectric Motors 101
IIRC, I used to know a bit about Electric Motors. That
was back around 1970, and my memory is poor.
They must be building them to last. I haven't needed
to work on one in many years.
But, when it rains, it pours. Now I got 'bout 3 EM's
that might need repair.
One is an old K-mart box fan (a Lakewood K-223) that's
gave good service for maybe 30 years. I even built a
little stand for it ...
So I turn it on hi yesterday and after a few seconds
I got a pop and spark out of where the wries enter the
motor, and it stops. Today I clean 30 years of crud
from the windings etc, reassemble, and test on lo. It
runs for 20 secs then does the pop/spark again (and
quits). I unplug quickly.
Here's the 'Lectric Motors 101 part. There's windings,
brushes, and a rotor inside? Long time ago, it was
practical to replace brushes as necessary for some
EM's. What do you look for? What can you do/not-do?
It's a shot-in-the-dark, but I'd like to keep the fan
going if possible.
I guess this is not a query for folks who pitch/buy-
new without thinking about it. Might be a question
for a good terminal tinker ...