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Baldor 5hp capacitors question

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Forum topic by jtriggs posted 07-31-2014 02:37 AM 433 views 0 times favorited 9 replies Add to Favorites Watch
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jtriggs

75 posts in 2507 days


07-31-2014 02:37 AM

Topic tags/keywords: tablesaw baldor motor capacitors

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.

-- Jon --Always remember, never live your life by a motto.


9 replies so far

View Beatnik's profile

Beatnik

33 posts in 91 days


#1 posted 07-31-2014 03:00 AM

Caps I’ve replaced have never shown physical damage. You can take them to a local motor repair shop and have them tested.

View Fred Hargis's profile (online now)

Fred Hargis

1891 posts in 1183 days


#2 posted 07-31-2014 12:17 PM

^^^^^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.

-- Our village hasn't lost it's idiot, he was elected to congress.

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jtriggs

75 posts in 2507 days


#3 posted 07-31-2014 03:45 PM

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.

-- Jon --Always remember, never live your life by a motto.

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Beatnik

33 posts in 91 days


#4 posted 07-31-2014 05:23 PM

I’ve always just shorted the terminals with a plastic handled screwdriver.

http://www.capacitorformotor.com/test_capacitor.html

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TheFridge

909 posts in 176 days


#5 posted 07-31-2014 05:37 PM

Short with a screwdriver to each other or ground. If the case of the cap is bulging but not leaking, it’s bad.

-- "We build our workshops. Then we enjoy the fruits of our labor by laboring for more fruits." - Me

View MrUnix's profile

MrUnix

557 posts in 889 days


#6 posted 07-31-2014 06:05 PM

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

-- Brad in FL - To be old and wise, you must first be young and stupid

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jtriggs

75 posts in 2507 days


#7 posted 07-31-2014 06:34 PM

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.

-- Jon --Always remember, never live your life by a motto.

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jtriggs

75 posts in 2507 days


#8 posted 08-01-2014 04:53 PM

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!

-- Jon --Always remember, never live your life by a motto.

View Fred Hargis's profile (online now)

Fred Hargis

1891 posts in 1183 days


#9 posted 08-01-2014 05:36 PM

Glad to hear it…..

-- Our village hasn't lost it's idiot, he was elected to congress.

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