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  • Airforce 12ci

    i just bought a 12ci and tried using it today, i installed the guide on the gun and just about 4 seconds into the cut the spark goes out. i restart the spark and the same thing keeps happening. i could not cut a piece of 1/8 X 4" steel with one cut, i had to keep starting as the spark stopped. no trouble lights came on, the compressor was running, had a good clean ground and the ground clamp was about 4" from my cut. i also changed the consumables but no change. This unit is brand new out of the box.
    What was i doing wrong?

  • #2
    Originally posted by jjgonzo View Post
    i just bought a 12ci and tried using it today, i installed the guide on the gun and just about 4 seconds into the cut the spark goes out. i restart the spark and the same thing keeps happening. i could not cut a piece of 1/8 X 4" steel with one cut, i had to keep starting as the spark stopped. no trouble lights came on, the compressor was running, had a good clean ground and the ground clamp was about 4" from my cut. i also changed the consumables but no change. This unit is brand new out of the box.
    What was i doing wrong?
    You did not phone Hobart, after running through the trouble-shooting section of the manual.

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    • #3
      I'm not sure why or how, but lots of good advice is being handed out tonight.

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      • #4
        The cutting arc will do this as a result of a poor ground clamp connection or weak input power. It is going through the pilot arc sequence then shutting off.

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        • #5
          i did call but it was too late, they close at 5 pm eastern and did not have a chance to call today. i used a grinder to clean the metal on both sides before i started and tried different outlets.

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          • #6
            Originally posted by jjgonzo View Post
            i did call but it was too late, they close at 5 pm eastern and did not have a chance to call today. i used a grinder to clean the metal on both sides before i started and tried different outlets.
            And? Did you check Keith's advice by fully ensuring both ground and input power?

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            • #7
              I am having the exact same problem with my plasma cutter. I have tried the things mentioned but I'm going to give it another shot. I did read on a couple of forums that mentioned it could be caused by getting moisture into the compressor from a very humid climate such as where I live.

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              • #8
                Originally posted by Josh7099 View Post
                I am having the exact same problem with my plasma cutter. I have tried the things mentioned but I'm going to give it another shot. I did read on a couple of forums that mentioned it could be caused by getting moisture into the compressor from a very humid climate such as where I live.
                Update to my post - I found an extremely dirty ground clamp bolt/wire connection and once I cleaned it off and put everything back together it worked great.

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                • #9
                  Glad to hear you got it going.

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                  • #10
                    Originally posted by Hobart Expert Keith View Post
                    Glad to hear you got it going.
                    Thanks again for your help Keith!

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