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Single phase motor problem

F

Fred

Jan 1, 1970
0
I have an old single phase 110V 5.6amp 1/3HP 1200rpm induction motor
that operates a scroll saw..The motor ran well in the past but now it won't
start, it just sits there drawing current. If I spin the motor by quickly
moving the belt it will start.

It has capacitor start and the cap measures 84 mfd. I'm assuming the cap is
OK because I can read the value with my capacitance meter.
I can't read the cap rating printed on the cap clearly but it looks like its
a
nominal rating of 72 mfd. Is this reasonable?

Is there a centrifugal switch that switches out the capacitor when it starts
running?

Any other ideas what the problem could be?
 
F

Fred

Jan 1, 1970
0
Thanks for your reply
I checked the rear of the motor and there is only the cover for the wire
conections. Should I remove the rear of the motor itself which
seems to contain the entire rear bearing assembly?
Fred
 
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