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I've got a 5 hp Baldor motor that is single phase on my PM66 tablesaw. It stopped running on Saturday. The motor hums briefly before it kicks out the circuit breaker. The motor seems to spin freely.

I'm assuming the capacitors are shot or at least one of them is shot. I've got the two capacitors out of the motor and they are identical. I thought there would be one bigger and one smaller type. The catalogue number for the motor is VL3606SAW. The capacitors are Baldor EC1161C06.

I see no apparent damage to either capacitor. Can I assume they may not show any damage? Does anyone know if these are only two capacitors in this motor?

Thanks very much for any help you can give me.
 

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^^^^^what he said, although when I've blown a few they often leak a smelly oily substance all over the place. But the motor shop can help, and if you need one they'll have it.
 

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Discussion Starter · #4 ·
Thanks. I've only ever messed with 1 capacitor in my shop window air conditioner. It did that leaky, black, sticky thing so I half expected the same thing from this new experience. I'm a little leery of handling these things. Afraid of the big zap that still might be lurking in there.
 

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Test them both with a multimeter now that you have them out. No need to go to a motor shop and pay someone to do what you can do yourself. If one is bad, get the uFarad rating and pick up a new one from Grainger, McMaster-carr, Amazon or wherever.. they are about $10 or so.

Cheers,
Brad
 

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Discussion Starter · #8 ·
Thanks all, spent a few minutes over lunch hour to talk to my local electric motor shop owner. He was a big help. He had two capacitors in stock for $14 each which is way better than the $44 each I was seeing online. Hopefully I'll be back in business tonight. I'm keeping my fingers crossed. The other option is that the starter switch contacts are burnt and they would be a pain to replace. The motor has to come out for that operation.

Thanks again, everybody.
 

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Discussion Starter · #9 ·
Good news, installed new capacitors last night in about 10-15 minutes and the saw powered up perfectly! Immediately ran about 200 feet of red oak through it and it made my day!
 
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