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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 |
| POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| OUTPUT PROBLEMS |
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Major physical or electrical | 1. Contact your local Lincoln | 1. Contact the Lincoln Electric |
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damage is evident. |
| Authorized Field Service | Service Dept. |
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| Facility. |
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Machine is dead - no open | 1. Make sure correct voltage is | 1. Check input power switch |
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circuit voltage, wire feed, gas | applied to the machine. | (S1) it may be faulty. See |
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flow when trigger is pulled and | 2. Make certain that the power | Wiring Diagram. |
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fan does not operate. |
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| switch is in the “on” position. | 2. Check lead connection and |
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| 3. Blown fuses in the input line. | correct function of circuit |
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| breaker. See Wiring |
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| Check circuit breaker on the |
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| Diagram. |
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| machine. |
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| 3. The Control P.C. Board may |
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| be faulty |
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No weld output, wire feed, gas | 1. The thermostat may be open | 1. Check thermostat and |
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flow when the trigger is pulled. | due to machine overheating. If | associated leads for loose or | ||
Fan does run. |
| machine operates normal after | broken connections. See |
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| a cooling off period then check | wiring diagram. |
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| for proper fan ventilation, | 2. Remove main power supply to | |
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| remove any obstructions. Make | ||
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| certain that the machine’s duty | the machine. With the gun |
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| trigger pulled check for |
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| cycle is not being exceeded. |
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| continuity at pins 6 and 3 on | ||
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| 2. Gun trigger may be faulty. | plug J5 on the control board. | |
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| 3. Perform the Transformer Test. | |
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| 4. Check all heavy current |
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| carrying leads. Check for loose | |
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| or broken connections at the | |
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| transformer, choke and |
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| rectifier. |
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| 5. Make sure identity plug is not | |
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| missing on control board. See | |
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| Wiring Diagram. |
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| 6. Possible bad control board. |
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| Replace. |
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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
