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using co2 with 252

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  • using co2 with 252

    we run co2 for gas at work. I just bought a 252. everything is brand new. having trouble finding a good smooth setting. ive tried the settings miller gives but those are not even close to where it should be. I had a 251 before. I used to have that one set at 19.5 and 217 or 220 and that would burn perfect. very smooth. now ive tried those same settings and any settings close to that on the 252 but it just doesn't run as smooth. any thoughts

  • #2
    What thickness metal are you welding on?

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    • #3
      using co2 with 252

      How bad are we talking here? Like, polarity reversed bad or just harsh arc bad?

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      • #4
        I know that on the MM350P you can adjust the inductance through the "Arc Control" and that will allow you to run beautiful nearly spatter free beads with CO2...
        And my old MM200 will run nice beads on CO2 with no available inductance control at all...

        Do not know the secret for the MM252....
        might try to clean your metal a little better and play with your voltage a bit..
        .

        *******************************************
        The more you know, The better you know, How little you know

        “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

        Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

        My Blue Stuff:
        Dynasty 350DX Tigrunner
        Dynasty 200DX
        Millermatic 350P w/25ft Alumapro & 30A
        Millermatic 200

        TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

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        • #5
          using co2 with 252

          Maybe the sweep spot is just really tight like my MM250. I'm not familiar with how your machine runs...them new fangled dandy machines...

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          • #6
            Make sure the wire spindle nut isn't too tight. My new MM252 ran like crap until I figured out it was way too tight...Bob
            Bob Wright

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            • #7
              Apparently CO2 is much more sensitive to wire stickout... so you might want to watch that as well..

              Ran across one of Jody's vids on CO2 that might be useful too... even though it looks like you have no inductance control...

              http://www.weldingtipsandtricks.com/...lding-co2.html



              Here is an Irish vid that gives some gas nozzle to contact tip ideas.. for CO2

              https://www.youtube.com/watch?v=XgfjO_SR1So

              Last edited by H80N; 08-22-2015, 10:18 AM.
              .

              *******************************************
              The more you know, The better you know, How little you know

              “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

              Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

              My Blue Stuff:
              Dynasty 350DX Tigrunner
              Dynasty 200DX
              Millermatic 350P w/25ft Alumapro & 30A
              Millermatic 200

              TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

              Comment


              • #8
                On welders without an adjustable inductance...

                some folks will add an inline precision calibrated and wound auxiliary inductor like the one illustrated in the attached pic
                (Courtesy of BUBBA-Tronics)
                Attached Files
                .

                *******************************************
                The more you know, The better you know, How little you know

                “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                My Blue Stuff:
                Dynasty 350DX Tigrunner
                Dynasty 200DX
                Millermatic 350P w/25ft Alumapro & 30A
                Millermatic 200

                TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

                Comment


                • #9
                  Hello. You mentioned 21 Volts and 217 wire speed? Sounds like your wire speed is too slow. I have a near new 252 (2013) and I run straight CO2. It welds smoothly at all settings but you do have to keep the wire speed up.

                  I also experimented with the tips. The original tip was flush with the outer copper cover and I did have some problems with the wire sticking. I read up on the issue and bought and outer cover that recesses the inner tip 1/8" and that solved the problem. The 252 is a wonderful machine but I liked all of them all the way back to the 200. My friend has a MM200 that is at least 30+ years old and he uses it nearly every day with great results.

                  You might also want to re a system reset as outlined in the factory manual.

                  Good luck and don't give up.
                  Last edited by Synchroman; 08-22-2015, 04:49 PM.
                  Miller Syncrowave 200
                  Milermatic 252
                  Lincoln AC/DC "Tombstone"

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                  • #10
                    using co2 with 252

                    Bubba-tronics looks like it produces some high quality, precision devices. My kind of outfit!

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