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TROUBLESHOOTING & REPAIR |
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Observe Safety Guidelines detailed in the beginning of this manual. |
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PROBLEMS |
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| POSSIBLE AREAS OF |
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(SYMPTOMS) |
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| MISADJUSTMENT(S) |
| COURSE OF ACTION | |||
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| OUTPUT PROBLEMS |
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Variable or “hunting” arc. |
| 1. Wrong size, worn or melted tip. | 1. | Replace the tip. |
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| 2. Worn work cable or poor con- | 2. | Verify | all the work | and elec- | ||
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| nection. |
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| trode connections are tight and | ||
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| 3. | Wrong polarity’ |
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| in good condition Clean if nec- | ||
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| essary and replace. |
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| 4. | The gas nozzle is | extended | 3. | Adjust polarity to recommended | ||
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| beyond the contact | tip or the | ||||
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| procedure verify DIP switch 7 | ||||
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| wire stickout is too long. |
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| setting | matches the | electrode | ||
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| 5. Poor gas shielding on process- |
| polarity. |
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| es requiring gas. |
| 4. Adjust | the gas nozzle and | ||
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| shorten the stickout to 1/2 to | ||
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| 3/4 inches. |
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| 5. Check | gas flow and mixture. | ||
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| Remove or block sources of | ||
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| drafts. | Perform | the GAS |
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| SOLENOID TEST, | replace if | |
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| necessary. |
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When the trigger is pulled, the wire | The | Turn the | ||||||
feeds slowly. |
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| position. |
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(Digital display models) |
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The preset voltage does not match | The preset voltage calibration in the | Use the setup menu to change the | ||||||
the power source voltage. |
| feeder has been selected for a dif- | preset voltage in the feeder to | |||||
(Digital display models) |
| ferent power source. |
| match the power source. |
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Poor arc starts with sticking or “ | Improper procedures or techniques. | See “Gas metal arc welding guide” | ||||||
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ropy looking beads. |
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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 the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call