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Rheostat question, Miller Big D4

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发表于 2021-9-1 00:52:11 | 显示全部楼层 |阅读模式
I picked up and got a Miller Big D4 running but have a small problem still. When the rheostat is put below 15% I can't seem to get the thing to arc. Is it just really hard to get to arc in lower settings? The rheostat also gets extremely hot and I noticed that towards the far end of the lower side two of the coils are broke. Could this be causing the problem? Lastly, where can I get parts for this machine as Miller said they no longer carry them, in particular a new face plate.    Thanks
Reply:Can you post a schematic and/or a clear photo of the variable resistor?Are you sure you are not trying to use the machine below its lowest rated current or below the current that will sustain an arc with the rod you are using?awright
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