Author Topic: Split phase motor  (Read 279 times)

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Bruce Downunder

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Split phase motor
« on: April 30, 2003, 03:35:50 PM »
I have a small 240 Volt 1/4 HP split phase motor that powers my  power hacksaw.

I have to "sort of hand start" it  and then all is OK.

I am wondering if I should do the following .1. pull it apart and clean the pressure plate--the little plate that  connects the start winding and then moves over to the run winding.

2, convince myself that the start winding is 'on the way out"  and have it rewound.

Anyone out there had the same problems ???

Thank You
Bruce
« Last Edit: April 30, 2003, 03:35:50 PM by (unknown) »

Kilroy2k1

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Start windings
« Reply #1 on: May 01, 2003, 06:17:29 AM »
Hi Bruce,
 75% of the time its just dirty or burnt contacts on the start switch. If there dirty rip it apart and clean with a thin file or fingernail file, if there burnt then take the switch and the motor make and model numbers to your local motor shop and pick one up, they are fairly cheap. 20% of the time its bad start capacitors, if the switch looks good and the throw out has free movment then you can take the caps to the same shop and have them tested. The other 5% of the time its a burnt start winding, which would require a rewind. Unless its a special frame motor it would probably be more economical to replace rather then rewind.

Tom S.
« Last Edit: May 01, 2003, 06:17:29 AM by Kilroy2k1 »