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Delta 50-850 Dust Collector breaker trip

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Forum topic by Hoowaa posted 11-24-2015 05:00 PM 908 views 0 times favorited 8 replies Add to Favorites Watch
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Hoowaa

14 posts in 375 days


11-24-2015 05:00 PM

Topic tags/keywords: delta 50-850 dust collector breaker capacitor

Hello All,

When I try and start my Delta 50-850, it attempts to start but trips the breaker after about 5 seconds.

I checked out some blogs and initially thought I had a problem with the “motor starting capacitor”.

I removed the cover (located outside the motor opposite to the on/off switch) and saw that the capacitor was bulging.

I installed a new capacitor based on what people on other blogs recommended (BC-200 – 200-240MFD 110.125/VAC). The machine started up as if it had a shot of adrenaline but the breaker tripped after a few seconds.

I went into Granger with the old capacitor and asked them for a replacement. They told me that it was a run capacitor and NOT a starting capacitor. they didn’t have the exact capacitor but he thought one with the following specs may work: 2MEC9 30uF 5% 370VAC 60/50HZ Rated to 85C max temp.

When I installed it, the machine functioned just like it did with the old capacitor. It would try to start for a few seconds and then the breaker trips.

Any thoughts on what I should try next?

I will try and get some pictures uploaded shortly.


8 replies so far

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Hoowaa

14 posts in 375 days


#1 posted 11-24-2015 05:16 PM

View MrUnix's profile

MrUnix

4208 posts in 1660 days


#2 posted 11-24-2015 06:18 PM

Open the motor up and check the centrifugal switch. Sounds like it’s sticking closed.
The cap in the second picture is the wrong one… the one in your third picture (30uF) is correct.

Cheers,
Brad

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

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Hoowaa

14 posts in 375 days


#3 posted 11-24-2015 06:42 PM

Thanks Unix. I’ll give that a try tonight. This video looks on point: https://www.youtube.com/watch?v=M-j6PhthXJY

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MrUnix

4208 posts in 1660 days


#4 posted 11-24-2015 07:03 PM

Depending on the age/condition of the motor, you probably should consider replacing the bearings as well… perfect time since you will already have it opened up. And if they are bad, that could also be a cause of your breaker tripping. Shouldn’t set you back any more than about $10 from a reputable bearing supplier.

Cheers,
Brad

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

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Rick Dennington

5173 posts in 2655 days


#5 posted 11-24-2015 07:09 PM

Hello Hoowaa,

I have a Delta 50-850 also that I bought in about 1990-91….never had any trouble with it till about 5 years ago when the start capacitor went out on it….It would do like you said your’s was/is doing. I replaced it with another one, and no problems up to this point…It starts and runs like normal. I have the d.c. on it’s on 20 amp. breaker, as all my major machines are on their own breakers, and my shop lights are on their own….I have 200 amp. service, so no problems….Are you running your d.c. on a seperate breaker? If not, that’s what’s causing the breaker to trip. If you are, then anything else tied in with the d.c. on the same circuit will cause it to trip….Especially if you turn both on at the same time….I don’t how your’s is set up….And I agree with Brad…..the 3rd one should be the right one.

-- At my age, an "all--nighter" is not having to get up and pee...!!!

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SawSucker

110 posts in 389 days


#6 posted 11-24-2015 07:41 PM


Hello Hoowaa, I have a Delta 50-850 also that I bought in about 1990-91. I have the d.c. on it s on 20 amp. breaker, as all my major machines are on their own breakers, and my shop lights are on their own. Are you running your d.c. on a seperate breaker? If not, that s what s causing the breaker to trip. If you are, then anything else tied in with the d.c. on the same circuit will cause it to trip….Especially if you turn both on at the same time.

- Rick Dennington


More people should be setup like Rick.

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Hoowaa

14 posts in 375 days


#7 posted 11-25-2015 08:55 PM

Thanks so much Brad (and everyone else). The switch was in fact stuck. It starts right up now and is working better than ever. Any concerns about how the new larger capacitor is mounted?

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MrUnix

4208 posts in 1660 days


#8 posted 11-25-2015 09:32 PM

Thanks so much Brad (and everyone else). The switch was in fact stuck. It starts right up now and is working better than ever. Any concerns about how the new larger capacitor is mounted?

- Hoowaa

Glad it was a simple fix for you!! As for the capacitor mounting… as long as it won’t fall off or have exposed wiring, it should be fine. You could have got a cap that was the same physical size as the original, but unless you really want it to fit under the cover, it probably is more hassle than it’s worth to take it back now :)

Cheers,
Brad

PS: That stuck switch was probably the reason the original cap fried…

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

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