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TROUBLESHOOTING AND REPAIR | ||||
Observe Safety Guidelines detailed in the beginning of this manual. |
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PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| OUTPUT PROBLEMS |
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The weld output is considerably |
| Examine polarity switch for poor | ||
less than indicated on the dials. |
| electrical connections and |
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Auxiliary voltage is normal. |
| damaged or burned contacts. |
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(continued) |
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| Replace if necessary. If polarity | |
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| switch contacts have excessive | ||
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| arc damage, check the 500 Ohm | |
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| resistor. |
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| Verify that the rocker is |
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| positioned correctly, according to | |
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| the factory drill mark. If |
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| necessary, perform the Rocker | |
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| Adjustment Procedure. |
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The weld output is considerably | If a remote current control is | Verify that the rocker is |
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higher than indicated on the | being used, try switching to local | positioned correctly, according to | ||
dials. Auxiliary voltage is | control. The remote current | the factory drill mark. |
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normal. |
| control may be faulty. | Perform the Dead Short, First |
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| Step, and Open Reactor Tests. | |
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| Perform the Exciter Rotor |
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| Resistance and Ground Test. |
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| Perform the Shunt Field Coil |
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| Resistance and Ground Test. |
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| Perform the Rocker Adjustment | |
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| Procedure. |
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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
