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Charles Charles is offline
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Default Clue me in on this.


"Warren Weber" wrote in message
. ..


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Capacitor start motor. Starts and runs in either direction as it pleases.
Capacitor good (replaced with others as test) 2 windings. Run winding
across line voltage, Start winding across line voltage with capacitor in
series. What determines rotating direction when starting?? This is on a
small Delta 9 inch bandsaw. Both windings ohm out OK.


Is there a centrifugal switch in series with the start circuit? If yes,
then it is the relative phase of the two windings that determines the
direction of rotation. To reverse this type of motor, swap ends on either
winding (but not both). This is also true of split phase motors (no start
capacitor but still have the centrifugal switch).

I have seen motors of this type with open start circuits that will start in
either direction with the slightest nudge ... of course, they have very low
starting torque.