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  1. #11
    Join Date
    Oct 2013
    Posts
    5

    Default

    I'll be sure to check the bolts for tightness. I wouldn't want them blowing away!

  2. #12
    Join Date
    Jun 2009
    Location
    greenfield new hampshire
    Posts
    878

    Default

    i remember when i had my mm250, it would weld fairly good welding .250 steel, once i jumped up in steel size, amps, volts, the quality of the weld dropped, during a hot flat weld, the puddle would change, it would mostly shrink a bit leaving a cold spot, while maintaining the same stick out. a fluctuation in voltage must of been going on,

  3. #13
    Join Date
    Dec 2013
    Location
    At the epicenter of the Green Mountain Range in VT
    Posts
    311

    Default

    A thermostat on the wall in my living room shows set temperature only briefly, then reverts to serve as a thermometer. The difference being the imprecision of the system.
    Might this be the case with the 250? Try turning it up slightly, does your measured voltage then rise to desired levels?

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