TROUBLESHOOTING | |||
Observe all Safety Guidelines detailed throughout this manual | |||
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PROBLEMS |
| POSSIBLE | RECOMMENDED |
(SYMPTOMS) |
| CAUSE | COURSE OF ACTION |
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| TIG MODE PROBLEMS |
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Machine output is intermittently lost. | 1. | Problem may be caused by high |
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Gas flow and high frequency are |
| frequency interference. Make sure |
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also interrupted. |
| that the machine is grounded |
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| properly according to the installa- |
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| tion instructions. If there are other |
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| high frequency sources in the |
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| area, make certain that they are |
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| grounded properly. |
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| 2. | Check Amptrol for proper opera- |
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| tion and loose connections. |
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| 3. | Check for proper input voltage | If all recommended possible areas of |
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| and proper voltage reconnection. | misadjustment have been checked |
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| and the problem persists, Contact |
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Arc “Flutters” when TIG welding. | 1. | Tungsten electrode may be too | your local Lincoln Authorized |
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| large in diameter for the current | Field Service Facility. |
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| setting. |
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| 2. | Tungsten not “sharp” when weld- |
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| ing in DC - mode. |
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| 3. | Gas shielding may be insufficient. |
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| Increase gas flow; reduce tung- |
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| sten stickout beyond gas cup. |
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| 4. | Check for contaminated gas or |
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| leaks in the gas line, torch, or con- |
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| nections. |
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| 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 weld- | 1. | Micro Switch mounted on Polarity |
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ing. |
| Switch is not opening in “AC” |
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| mode. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your