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Arc when turning off dust collector

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Forum topic by Morayblue posted 05-31-2012 05:41 AM 775 views 0 times favorited 4 replies Add to Favorites Watch
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Morayblue

1 post in 1654 days


05-31-2012 05:41 AM

I just purchased a grizzly 1029z2 dust collector and find that the switch occasionally shows considerable arc when turning off. Has anyone else noticed this with their 220v tools. I believe it is inductive kickback, however I do not know if it safe on a dc.


4 replies so far

View Bill Davis's profile

Bill Davis

226 posts in 3391 days


#1 posted 05-31-2012 12:28 PM

It is fairly typical when interrupting the current (opening a switch) to a load like your DC that an arc will occur across the switch contacts. Properly rated switches are rated to withstand this and thus it likely is no problem. You certainly would not want such an arc to occur in an explosive atmosphere. Wood dust in the air can be potentially explosive but if you search for instances of fire/explosion caused by an arc in a wood dust atmosphere you might find a report of such an incident but they are rare and likely not something to worry about. The arc is not likely to do any harm to the DC either.

View Scot's profile

Scot

344 posts in 2863 days


#2 posted 06-01-2012 12:33 PM

No that is not normal to see an arc. Any arcing should be contained within the switch and not be seen. Check for loose connections, if that doesn’t work contact Grizzly.

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

View Fred Hargis's profile

Fred Hargis

3950 posts in 1960 days


#3 posted 06-01-2012 01:17 PM

I have no idea if that’s normal or not, but I do know I don’t see it on any of my tools with mag switches.

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

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waho6o9

7179 posts in 2044 days


#4 posted 06-01-2012 02:01 PM

Ground it, if I understand the situation correctly.

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