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Thread: No Arc

  1. #1

    No Arc

    I have the original blue Longevity M200 which is practically brand new & tried to fire it up yesterday. Everything looked fine until I pulled the trigger and no arc. Everything looks normal/correct to the extent that I took a multi meter and check voltages and continuity from the wall plug to the GND Clamp & Gun.

    Everything inside looks good, no burnt smell or loose wires and to be honest, this unit looks new!

    I recently wired a new 30amp wall plug (2 hots legs and 1 GND). Should the GND be the earth ground or the utility ground? My box has both.

    Does anyone have any suggestions on what I could be missing?

  2. #2
    The ground wire should connect to the utility neutral, that is connected to earth ground as well at the utility input.
    Units owned Longevity PROmts 200

    Force Cut LP80 plasma cutter
    Longevity auto dark welding helmet

    Atlas 10x36" lathe
    Craftsman 5HP 30 Gal compressor
    Home made CNC router/plasma/hot wire foam cutting, 3D printing table powered by Longevity Force Cut LP80
    Home built aluminum foundry, HF 4x6 bandsaw

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