TROUBLESHOOTING
Observe Safety Guidelines
detailed in the beginning of this manual.
Troubleshooting Guide
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| PROBLEMS |
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| POSSIBLE AREAS OF |
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| (SYMPTOMS) |
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| MISADJUSTMENT(S) |
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| TIG MODE PROBLEMS |
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| Machine output is intermittently |
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| 1. | Problem may be caused by |
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| lost. Gas flow and high frequency |
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| high frequency interference. |
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| are also interrupted. |
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| Make sure that the machine is |
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| grounded properly according |
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| to the installation instructions. |
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| If there are other high |
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| frequency sources in the area, |
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| make certain that they are |
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| grounded properly. |
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| 2. | Check arc start switch or |
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| amptrol for proper operation |
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| and loose connections. |
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| Arc “Flutters” when TIG welding. |
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| 1. | Tungsten electrode may be |
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| too large in diameter. |
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| 2. | Tungsten not “Sharp” when |
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| welding in DC negative mode. |
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| 3. | If helium is used as a |
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| shielding gas, then reduce the |
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| percentage of helium. |
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| 4. | Adjust flow rate of shielding |
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| gas. |
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| 5. | Check hoses and connections |
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| for leaks. |
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| Lack of penetration in AC TIG |
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| 1. | Manual balance control set |
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| welding. |
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| improperly - set to negative |
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| 10 |
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| penetration. |
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| Black areas along weld bead. |
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| 1. | Tungsten electrode may be |
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| contaminated. Replace or |
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| sharpen. |
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| 2. | Shielding gas flow may be |
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| insufficient. |
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| 3. | Contaminated gas or faulty |
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| gas line or torch. |
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| Black areas along weld bead at or |
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| 1. | Increase post flow time. |
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| near end of weld. |
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RECOMMENDED COURSE OF ACTION
If all recommended possible areas of misadjustment have been checked and the problem persists,
Contact your local Lincoln Authorized Field Service Facility.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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