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TROUBLESHOOTING & REPAIR | ||||||
| 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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| MODE FUNCTION PROBLEMS |
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During the welding sequence the |
| 1. If the optional start timer is |
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weld light does not go ON. |
| installed determine if the start |
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| mode is timing out. If the |
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| sequence stays in the “start” |
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| mode the start timer may be |
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| faulty. |
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| 2. If the start module is OK and the |
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| weld light does not go ON the |
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| logic board may be faulty. |
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| Replace. |
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| 3. If a start module is NOT used |
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| make sure the jumper plug is |
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| installled in the procedure board |
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| receptacle. |
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While welding the weld mode is | 1. The weld timer module may be | 1. Check the lead harness between |
omitted in the welding sequence. | faulty. Replace. | the weld timer and the procedure |
The weld timer is set for a longer |
| board for loose or faulty connec- |
time than zero seconds. |
| tions. |
The weld timer does not time out. | 1. Set the burnback timer for a value 1. | Check the lead harness between |
the unit stays in the weld mode. | greater than zero seconds. Start | the weld timer and the procedure |
| the weld sequence and then stop | board for loose or faulty connec- |
| it with the stop button. Check to | tions. |
| see if the unit returns to the nor- |
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| mal idle state.(Strike light ON and |
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| “Hot Electrode” light OFF). |
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| • If the weld mode ends and |
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| the unit returns to the nor- |
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| mal idle state, the weld |
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| timer module may be |
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| faulty. |
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| • If the unit does NOT return |
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| to the normal idle state the |
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| procedure board may be |
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| faulty. |
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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
