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Electric motor disassembly

PassnThru

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Joined
Jan 5, 2010
Messages
6,510
Location
Bowling Green KY
I replaced the motor in my whole house fan recently due to the old one being noisy and not wanting to start - there was screeching involved so I suspect the bearings are bad. I don't know if I'll even try to fix it - it's only a quarter horse and it doesn't have any mounts built in. It seems fairly straight forward to pull it apart but I'm not sure about the capacitor - it's listed as a 10MFD/370VAC. Does this have to be drained before I mess with the motor?
 
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Neggy

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May 30, 2021
Messages
754
it is a starter capacitor, there is no draining involved, but I would short it to ground after removing the power at the panel as they can hold a charge that will kick your *** across the room
 
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Cruzan80

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Joined
Jul 22, 2015
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4,200
Location
Denver, CO
Capacitors can hold a charge, even after being unplugged. Just take a metal object (screwdriver with a rubber handle works well), and short the wires across using the steel part of the screwdriver. Takes a second, and is worth the peace of mind.
 

Meursault74

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Apr 1, 2019
Messages
21,947
Location
Southern California
it is a starter capacitor, there is no draining involved, but I would short it to ground after removing the power at the panel as they can hold a charge that will kick your *** across the room
10 uF, that's a run capacitor. That one looks like and has the same rating for a compressor on a refrigerated incubator I replaced last year. Which is why I felt like clarifying:).
 
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