Question about Miller Trailblazer 302 Welder Generator 907217 907216

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Miller Trailblazer, welds great for about 30 minutes. Then I loose my arc. It will spark but not maintain the arc. I let it cool off for 15 to 30 minutes it will weld for another 15 to 30 minutes.

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Sounds pretty normal. These units are not rated to weld continuously. They might only be rated at 5-10% for cheap welders and longer for better ones. They are never designed to run continuously. You need to get into the higher end ($$$) before you get that ability.
You can try to blow cool air into the unit to help it cool. Sometimes this can extend the work time.Basically you can try that or work to your temp cut off limit as you have been or upgrade to a better unit. That is about all you can do.

Posted on Apr 04, 2011

  • alanthomas50 Apr 09, 2011

    I dont have this trouble. These welders have 1005 duty cycle.

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