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TROUBLESHOOTING & REPAIR |
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Observe Safety Guidelines |
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| TROUBLESHOOTING GUIDE | ||
detailed in the beginning of this manual. |
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PROBLEMS | POSSIBLE AREAS OF |
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(SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION | |||||
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| POWER OUTPUT PROBLEMS |
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Major mechanical or electrical | 1. Contact | your | local | Lincoln | 1. Contact the Lincoln Electric | |||
damage is evident. | Authorized | Field | Service |
| Service Department at | |||
| Facility. |
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No welding output or auxiliary | 1. Check for loose or faulty con- | 1. | Check the brushes for wear and | |||||
power. The engine operates nor- | nections at any leads, cables or |
| proper contact to the rotor slip | |||||
mally. | cords attached to either the aux- |
| rings. |
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| iliary output receptacles and/or | 2. | Perform the Brush and Slip | |||||
| the weld output terminals. |
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| Ring Service procedure. | |||||
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| 3. Perform the Rotor Voltage Test. | ||
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| 4. Perform the Stator Voltage | ||
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| Test. |
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No welding output in any mode. | 1. Place the Welding Terminals | 1. Check for damaged conductors | ||||||
The auxiliary output is normal. The | switch in the “WELD TERMI- |
| or faulty connections on the | |||||
engine operates normally. | NALS ON” position. If the prob- |
| heavy current carrying leads | |||||
| lem is solved, the fault may be in |
| that connect the output studs to | |||||
| the external control cable, or the |
| the Chopper module and to the | |||||
| attached | wire | feeder, | amptrol, |
| output Rectifier. | Also Check | |
| arc start switch, etc. (if used) |
| the shunt and choke assem- | |||||
| 2. With the | engine at | high | idle |
| blies for damage | and faulty | |
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| connections. |
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| (3650RPM), the machine in the |
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| 2. Perform the Chopper Module | |||||||
| control at maximum, and the |
| Function Test. |
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| welding terminals switch in the |
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| “WELD TERMINALS ON” posi- |
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| tion; check for the presence of |
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| approximately | 58VDC, | OCV |
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| (open circuit voltage) at the weld |
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| output terminals. |
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| 3. If the correct OCV is present at |
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| the welding output terminals, |
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| check | the | welding |
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| cables,connectors, |
| work |
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| clamps, electrode holder, etc. for |
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| loose or faulty connections. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
