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TROUBLESHOOTING & REPAIR | ||||||
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| TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual |
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| PROBLEMS |
| POSSIBLE AREAS OF |
| RECOMMENDED |
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| (SYMPTOMS) |
| MISADJUSTMENTS(S) |
| COURSE OF ACTION |
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| WIRE FEEDING PROBLEMS |
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No control of wire feed speed. | 1. | The thumb switch circuit in the | 1. | Perform the Wire Drive Motor | ||
Other machine functions are normal. |
| gun may be faulty. Check or |
| and Tach Feedback test. |
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| replace. |
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| 2. | The control board may be faulty.- | |
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| Replace. |
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There is no wire feed when gun trig- | 1. | If the drive rolls are turning then | 1. | Perform the Wire Drive Motor | ||
ger is pulled. Normal open circuit |
| check for a mechanical restric- |
| and Tach Feedback Test. |
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voltage is present. |
| tion in the wire feed path. |
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| 2. | The control board may be faulty. | |
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| 2. | The gun liner may be clogged. |
| - Replace. |
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| Check or replace. |
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| 3. | If the drive rolls are NOT turning |
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| when the gun trigger is pulled |
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| then contact your local Lincoln |
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| Electric Authorized Field Service |
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| Facility. |
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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, con- tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call 216-