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TROUBLESHOOTING & REPAIR |
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| Observe Safety Guidelines |
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| TROUBLESHOOTING GUIDE |
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| 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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| WELD OUTPUT PROBLEMS |
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| The arc quality is poor with exces- | 1. | The arc Control may be set too | 1. Check that the weld circuit is not |
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| sive spatter. | The arc heat can be |
| high. Try using a lower setting. | grounded. | With the engine off, |
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| controlled and maintained normal- | 2. | The output control may be set | check the | resistance | between |
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| ly, the auxiliary output is normal, | chassis ground and the weld |
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| and the engine operates normally. |
| too high for the electrode being | output terminals. | The | resis- |
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| used. Try welding at a lower | tance should be very high, a |
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| setting. | reading of 500,000 (500k) ohms |
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| 3. Check that the electrode used is | or higher is acceptable. |
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| of good quality, dry, and free of | 2. The weld control system may |
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| contamination. Try using some | be grounded or malfunctioning. |
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| new Lincoln Electrode, and set- | Perform | the |
| Control |
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| ting the machine per the | Potentiometer | and |
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| Lincolnʼs recommendations for | Switch Test, and the | Remote |
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| 4. | that product. | Receptacle Resistance Test. |
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| If shielding gas is used, check | 3. The Chopper module may be |
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| that the correct gas is being | defective. | Perform | the |
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| used, and that the gas flow is | Chopper Module Resistance |
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| set correctly. Check the gas | Test | . |
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| system for damaged, pinched or |
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| leaking hoses. |
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| 5. The weld cables may be coiled, |
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| or wrapped around metal reels |
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| or racks. This can cause exces- |
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| sive electrical inductance in the |
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| weld circuit. Try welding after |
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| uncoiling the cables, or discon- |
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| nect the existing weld cables |
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| and attach a set of adequately |
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| sized, short test cables. |
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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
