| TROUBLESHOOTING | |||
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| Observe all Safety Guidelines detailed throughout this manual | |||
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| PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
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| (SYMPTOMS) | MISADJUSTMENTS | COURSE OF ACTION |
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TIG MODE PROBLEMS
Machine output is intermittently lost. | 1. Problem may be caused by high | |
Gas flow and high frequency are |
| frequency interference. Make |
also interrupted. |
| sure that the machine is ground- |
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| ed properly according to the |
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| installation instructions. If there |
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| are other high frequency |
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| sources in the area, make cer- |
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| tain that they are grounded |
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| properly. |
| 2. | Check Amptrol for proper opera- |
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| tion and loose connections. |
| 3. | Check for proper input voltage |
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| and proper voltage reconnec- |
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| tion. |
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Arc “Flutters” when TIG welding. | 1. | Tungsten electrode may be too |
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| large in diameter for the current |
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| setting. |
| 2. | Tungsten not “sharp” when |
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| welding in DC - mode. |
| 3. | Gas shielding may be insuffi- |
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| cient. Increase gas flow; reduce |
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| tungsten stickout beyond gas |
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| cup. |
| 4. | Check for contaminated gas or |
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| leaks in the gas line, torch, or |
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| connections |
| 5. | If a helium blend is used as a |
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| shielding gas, then reduce the |
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| percentage of helium. |
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Arc “Pulsates” when AC TIG | 1. Micro Switch mounted on | |
| Polarity Switch is not opening in | |
welding. |
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| “AC” mode. | |
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Contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.