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Trying to find information on Old miller 250 TIG SN: U489934

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  • Trying to find information on Old miller 250 TIG SN: U489934

    I picked up at auction an old Miller 250 TIG. Serial number U489934. Front is labeled 25 AC/DC-HF TIG-Metallic Arc Welder. Payed $250. Came with 40 lbs of filler rods.

    Looking for information on setting up the TIG. Unfortunately, no argon tank or regulator.

    Currently:
    1) Doing some minor repair to the ground and arc welding cables.

    2) Blew out the dust.

    3) Adjusted the spark gap.

    4) Looking forward to trying TIG welding.

    Possible future work:
    1) Would like to add a foot switch.
    2) Would like to add a spoolgun. But I just don't see how that would be possible.

  • #2
    PICS of the front panel pls

    Serial# U489934 was built in the first half of 1969

    You probably need to contact the literature dept for a copy of the manual

    To order, contact the Miller Literature Department - 920-735-4356 or 1-800-4-A-Miller (1-800-426-4553).
    Last edited by H80N; 10-04-2016, 01:53 PM.
    .

    *******************************************
    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...

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    • #3
      If they have it in PDF format... in the archive..... they may be able to email it to you.........
      .

      *******************************************
      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


      • #4
        Miller does have the manuals in the archive and can email you a copy.

        Just clarifying whether it is the 1960's "M-250" or early 1970's "Two-Fifty".
        The "250" is 41 inches long, has 2 levers on the front and 2 cable outlets.
        The "Two-Fifty" is 28 inches long, 1 lever on the front and 4 cable outlets. Many people confuse the two names.

        H80N says it is from 1969, so it is probably the "M-250".
        Either way, both are movable shunt units with a hand crank on the front, and only has a remote for ON/OFF, not amperage control.

        The O-M I have in front of me for the M-250 (IOM-312A-6/69), describes the H-F remote on page 11. It is only a 2-pin unit and could easily be modified if you cannot find an original piece. A thumb switch, (as shown on page 12) is the easiest solution, and more useful than a foot switch.

        It is an interesting old machine, have fun with it.

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        • #5
          Thanks for the information. It is the M-250. It is 41 inches long with two levers and 2 cable outlets. Thanks Stefen7 for the manual number. Found the Operation manual and parts list.

          Opened it up and found the two mica caps in the high frequency circuit are leaking.

          Comment


          • #6
            Originally posted by FL_Seagull View Post
            Thanks for the information. It is the M-250. It is 41 inches long with two levers and 2 cable outlets. Thanks Stefen7 for the manual number. Found the Operation manual and parts list.

            Opened it up and found the two mica caps in the high frequency circuit are leaking.
            They are probably... "Mica Capacitor .002 uF @ 6000 volts" ( many subs are uprated to 10KV)

            Read this thread for possible substitutes

            http://www.millerwelds.com/resources...requency/page2

            Last edited by H80N; 10-05-2016, 05:45 PM.
            .

            *******************************************
            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


            • #7

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              • #8
                Miller says 204933 is the alternative part.

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                • #9
                  Originally posted by FL_Seagull View Post
                  Miller says 204933 is the alternative part.
                  Yup.... those are readily available...

                  http://www.brweldingsupplies.com/mil...0-v-panel-mtg/

                  .

                  *******************************************
                  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

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