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| TROUBLESHOOTING | |||||||||
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| Observe all Safety Guidelines detailed throughout this manual | ||||||||||
| TROUBLESHOOTING GUIDE |
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| Observe Safety Guidelines | |||||
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| detailed in the beginning of this manual. | ||||||
| PROBLEMS |
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| (SYMPTOMS) |
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| CAUSE |
| COURSE OF ACTION | |||||||
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| BASIC MACHINE PROBLEMS |
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| Auxiliary receptacle is dead. |
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| 1. Circuit breaker CB2 (near the |
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| 1. Power down and reset CB2. | ||||||
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| 115V receptacle) may have |
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| tripped. |
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| 2. Fuse F1 (in reconnect area) may |
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| 2. Power down and replace the |
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| have blown. |
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| fuse. |
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| “Real Time Clock” no longer func- |
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| 1. Control PC Board Battery. |
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| 1. Replace the battery (Type: |
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| tioning |
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| BS2032) |
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| PROBLEMS |
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| POSSIBLE |
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| (SYMPTOMS) |
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| CAUSE |
| COURSE OF ACTION | |||||||
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| WELD AND ARC QUALITY PROBLEMS | ||||||||||
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| General degradation of weld per- |
| 1. Wire feed problem. | |||||||||
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| 1. Check for feeding problems. Check actu- | ||||||
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| formance. |
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| al WFS vs. preset. Verify proper wire |
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| drive and gear ratio has been selected. |
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| 2. Cabling problems. |
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| 2. Check for bad connections, excessive |
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| loops in cable, etc. |
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| NOTE: The presence of heat in the exter- |
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| nal welding circuit indicates poor connec- |
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| tions or undersized cables. |
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| 3. Loss of, or improper Shielding Gas. |
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| 3. Verify gas flow and type are correct. |
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| 4. Verify weld mode is correct for process. |
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| 4. Select the correct weld mode for the |
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| application. |
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| 5. Machine calibration. |
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| 5. Verify the calibration of the output current |
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| and voltage. |
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| 6. Secondary current limit has been |
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| 6. Long term average current is limited to |
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| reached. |
| 450A. Adjust procedure to reduce output |
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| demand. |
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| Wire burns back to tip when the arc |
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| 1. Voltage sense lead problem. |
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| 1. Check sense lead connections. Check |
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| is initiated. |
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| the sense lead configuration and arc |
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| polarity. Make sure Electrode and Work |
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| connections are not reversed. |
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| 2. Wire feed problem. |
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| 2. Check for feeding problems. Verify proper |
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| wire drive and gear ratio has been select- |
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| ed. |
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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, con- tact your local authorized Lincoln Electric Field Service Facility for technical assistance.
POWER WAVE® i400
