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Miller Challenger 172 tripping breaker

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发表于 2022-8-11 15:51:36 | 显示全部楼层 |阅读模式
I have had this machine since new. Started welding as usual set on 1/4" metal using .035 flux core. My 20 amp breaker tripped after a few seconds. Pulled wire out of gun, pulled trigger and tripped again. Reset breaker and runs fine until trigger is pulled. I pulled the cover off, and tried it again, short pulls of the trigger and it sparks near a relay at the back of the machine, btw the drive motor turns when triggered but not for long.  Any thoughts? TIA
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Originally Posted by Danbury5123

I have had this machine since new. Started welding as usual set on 1/4" metal using .035 flux core. My 20 amp breaker tripped after a few seconds. Pulled wire out of gun, pulled trigger and tripped again. Reset breaker and runs fine until trigger is pulled. I pulled the cover off, and tried it again, short pulls of the trigger and it sparks near a relay at the back of the machine, btw the drive motor turns when triggered but not for long.  Any thoughts? TIA
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