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  • engine drive tig

    I have a bobcat 225 and I want to run DC tig. Ive done it before a long time ago on a job but I didnt set it up. do you have to switch the leads a for DC neg? because Im having a real bad time getting this to work right. Mild steel.

  • #2
    If there is no switch to change the polarity then you must swap the leads .DCEN
    2- XMT's 350 cc/cv
    1- Blue star 185
    1- BOBCAT 250
    1- TRAILBLAZER 302
    1- MILLER DVI
    2- PASSPORT PLUS
    1- DYNASTY 200 DX
    1- DYNASTY 280 DX
    1- MAXSTAR 150 STL
    1- HF-251 BOX
    1- S-74D
    1- S-75DXA
    2- 12-RC SUITCASES
    1- 8-VS SUITCASE
    2- 30 A SPOOLGUNS

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    • #3
      Bobcat 225 TIG

      Based on the owner's manual, TIG torch connections go to the "electrode" terminal. The process selector switch provides the correct polarity (DCEN).
      "Bonne journe'e mes amis"

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      • #4
        Originally posted by davedarragh View Post
        Based on the owner's manual, TIG torch connections go to the "electrode" terminal. The process selector switch provides the correct polarity (DCEN).
        But he didn't say which bobcat 225...some are more primitive

        www.facebook.com/outbackaluminumwelding
        Miller Dynasty 700...OH YEA BABY!!
        MM 350P...PULSE SPRAYIN' MONSTER
        Miller Dynasty 280 with AC independent expansion card
        Miller Dynasty 200 DX "Blue Lightning"

        Miller Bobcat 225 NT (what I began my present Biz with!)
        Miller 30-A Spoolgun
        Miller WC-115-A
        Miller Spectrum 300
        Miller 225 Thunderbolt (my first machine bought new 1980)
        Miller Digital Elite Titanium 9400

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        • #5
          "Pre-Historic Bobcats"

          Fusion King: How true, how true, might be an old one
          "Bonne journe'e mes amis"

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