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Welder generator burning up tool switches

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earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2009-06-28          163693


I bought a used portable Miller welder generator with a 2 cylinder Onan engine.

It has two settings and outlets for 110VAC. When at an idle it produces 110 but not a lot amps. The other outlet requires flipping a toggle swith to "power while welding" which revs up the engine and produces a lot of power.

I went to use my 6" bench grinder. The grinder was spinning fairly slow at engine idle and slowed even more when I reid to gring=d a small bolt, so I kicked the gen. up to more power---all of a sudden I heard a high pitched "screaming" sound inside the grinder switch and the grinder would not spin---then the switch started smoking. And now it won't run at all.

This high-pitched screaming sound also happens while welding---comes from the actual arc being made.

So I tried a belt/disc sander. Same thing--noise, smoke not working any more.

Note that my other tools like a 9" angle grinder, 1/2" drill, 4" angle grinder and sawz-all all work fine.

Could it be the type of motors (brushless?)? Both the bench grinder and the sander are made by Crapsman...I mean, Craftsman.

Anyone have any ideas--other than a "loose nut" (or as Kenny says a "lose nut") behind the switches?

(In case anyone cares or remembers, I had a 5000 watt welder generator that stopped working. Would have cost more to fix it than replace it with new. I put it on Detroit-area Craigslist for $200 and a guy in Mexico found it on-line. He sent his brother who was here to buy it and ship it to him.)

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Welder generator burning up tool switches

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kthompson
Join Date: Oct 2005
Posts: 5219 South Carolina
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2009-06-30          163722


duplicate post. ....

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____________________________________________________________________________________
Welder generator burning up tool switches

View my Photos
earthwrks
Join Date: Dec 2003
Posts: 3853 Home Office in Flat Rock, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2009-06-30          163749


Kenny this duplicate didn't get here from me---I noticed there were a lot of ghost duplicates the last few days. This be one. ....

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