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Millermatic 252 problems

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  • Millermatic 252 problems

    I am a new welding teacher at a high school. I have all new miller in my lab and I was mainly taught on just the old millers with the 6 and 60 short circuit. I have gotten both of them to run short circuit for my student. The other day I had a student do something I have yet to figure it out what he did. One of the Millermatics won't go to short circuit any more. I can set it and it will run a few second on short and then switches right to spray. I have reset any possible timers that could of been on there. I am learning as I am going and could really use some ideas so I can get this one up and running so my students can use it.

  • #2
    Try a reset on the machine, owners manual should illustrate how.

    Dynasty 200 DX
    Millermatic 350P
    30A Spoolgun
    Lincoln Pro Mig 140
    Hypertherm Powermax 30
    14" Rage Evolution dry saw
    40 ton press brake
    Evenheat Heat treat oven

    1x42 / 4x48 belt grinder


    • #3
      You might also check with the LWS that supplies/supports your school. They should be able to help, especially if the equipment is new - it was possibly bought through them. I know that the LWS that supplied the vo-tech school I recently graduated from provided great support for our equipment.


      • #4
        What do you mean 6 and 60? What gas are you running?


        • #5
          The difference between short circuit and spray is just different wire speeds, voltage settings with 90/10 vs. 75/25. I don't think it can actually go into a "spray mode" as it doesn't have different modes. Sounds like a kinked liner or something restricting the wire feed.
          Dynasty 400 Wireless
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          Aerowave loaded with Sequencer and pulse
          ​Watermate 1A
          ​Coolmate 3
          XMT350 CC/CV
          D74DX Feeder double the fun
          Optima Pulse Pendant
          30A spoolgun
          Neverlast 100 amp plasma with Hyper Duramax torch
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          Flametech Duel flowmeters
          Just a hilljack in the woods with fancy welding equipment
          and a pet Raccoon.