TROUBLESHOOTING | ||
| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
RECOMMENDED
COURSE OF ACTION
Poor arc striking with sticking or | 1. | Improper procedures or techniques. |
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and ropy looking bead, or electrode | 2. | Improper gas shielding. |
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stubbing into the plate while weld- |
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ing. |
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Tip seizes in the diffuser. | 1. | Tip overheating because of prolonged |
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| or excessive high current and/or duty |
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| cycle welding. |
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Motor does not turn when trigger is | 1. | The wire drive motor may be over- |
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pulled. |
| loaded. “Hxx” will be displayed on the |
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| WFS display, where “xx” is the num- |
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| ber of seconds until the wire drive |
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| attempts to run again. |
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| 2. | A jumper plug or |
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| Switch Interface Module must be |
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| properly installed into connector J5. |
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| 3. | Damaged wiring in the trigger circuit. | If all recommended possible areas |
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| of misadjustment have been |
| 4. | Control p.c. board failure. | checked and the problem persists, |
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| Contact your local Lincoln |
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The drive motor does not turn | 1. | Damaged leads to the drive motor. | Authorized Field Service Facility. |
although arc voltage is present |
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and the gas solenoid is on. | 2. | Damaged wire drive motor. |
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| 3. | Damaged control p.c. board. |
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No control of wire feed speed. | 1. | Damaged leads to the motor |
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Motor turns. Gas solenoid operates |
| tachometer. |
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properly and arc voltage is present. |
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Wire feed speed can be set on the |
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display, but has no control of the | 2. | Damaged tachometer. |
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wire feed speed. |
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| 3. | Damaged control p.c. board |
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Wire feed motor turns and gas sole- | 1. | Power source is unable to provide arc |
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noid operates, but no arc voltage is |
| voltage because of thermal shutdown |
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present. |
| or other failure. |
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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.
