| TROUBLESHOOTING | |||
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| Observe all Safety Guidelines detailed throughout this manual | |||
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| PROBLEMS | POSSIBLE | RECOMMENDED |
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| (SYMPTOMS) | CAUSE | COURSE OF ACTION |
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TIG PROBLEMS
Arc "pulsates" in AC polarity, DC | 1. | Micro switch S2A on polarity switch | ||
polarity is o.k. |
| does not open in AC polarity | ||
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Black area along weld bead | 1. | Oily or organic contamination from | ||
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| work piece |
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| 2. | Tungsten electrode may be conta- | ||
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| minated |
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| 3. | Leaks in gas line, torch, or con- | ||
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Output quits momentarily; gas flow | 1. | May be caused by | ||
and |
| ence. Check that machine is | ||
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| grounded properly. Surrounding | ||
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| machines that generate | ||
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| also should be properly grounded. | ||
| 2. | Ground | connection | of Protection |
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| PC board may has become loose | ||
| 3. | Ground | connection | of Bypass |
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| /Stabilizer PC board may has | ||
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| become loose. |
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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 Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
