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| TROUBLESHOOTING |
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| Observe all Safety Guidelines detailed throughout this manual |
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| PROBLEMS |
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| POSSIBLE CAUSE |
| RECOMMENDED |
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| (SYMPTOMS) |
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| COURSE OF ACTION |
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| Variable or “hunting arc. |
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| 1. | Wrong size, worn and/or melted |
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| 2. | contact tip. |
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| Worn work cable or poor work |
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| 3. | connection. |
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| Loose electrode or work cable |
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| 4. | connections. |
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| Wrong polarity. - Make sure |
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| electrode polarity is correct for |
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| process being used. |
| If all recommended possible areas of | |
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| 5. | Gas nozzle extended beyond |
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| misadjustment have been checked | ||||||
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| gun tip or wire stickout too long |
| and the problem persists, Contact | |
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| 6. | while welding. |
| your local Lincoln Authorized |
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| Poor gas shielding on processes |
| Field Service Facility. |
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| requiring gas. - Check gas flow |
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| and mixture. |
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| Poor arc striking with sticking or | 1. | Improper procedures or tech- |
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| niques. - See “Gas Metal Arc |
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| and ropy looking bead, or electrode | 2. | Welding Guide” |
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| stubbing into plate while welding. | Improper gas shielding - Clean |
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| gas nozzle. Make certain that |
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| gas diffuser is not empty or |
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| turned off. Make certain gas flow |
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| 3. | rate is proper. |
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| Remove gun liner and check |
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| rubber seal for any sign of dete- |
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| rioration or damage. Be sure set |
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| screw in connector block is in |
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| place and tightened against the |
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| liner bushing. |
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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 Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
POWER FEED 10 / R
