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  • Stock Burn through

    I am a maintenance manager at a small construction company.
    We have a Miller Bobcat 250 NT with an Onan motor.
    The ironworkers say that they can be welding fine then all of a sudden the power spikes and they burn through there stock. So then they turn it down a notch and it won't even spark. Does anyone know what may be wrong with this welder? I don't know where to start?
    Thanks for your imput.

  • #2
    Mailman219,
    I am not a service tech, but the Bobcat is very simple inside. It sounds like your rheostat (amperage control) may be bad.
    Have a great day!

    John Leisner
    Product Manager
    Miller Electric Mfg. Co.

    Owner and user of:
    Trailblazer 302 and Legend 301
    Smith Dual Guard oxy-fuel system
    Various borrowed Millermatics and Spectrums.

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