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| TROUBLESHOOTING & REPAIR |
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| TROUBLESHOOTING GUIDE | Observe Safety Guidelines | |
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| detailed in the beginning of this manual. | |
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | ||
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | ||
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| OUTPUT PROBLEMS |
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Machine has no welding output – | 1. | Make sure that the machine | 1. | Perform the Wire Feeder |
fans run – display is on. |
| was powered up with a proper- |
| Trigger Circuit Test (#1 or #2) |
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| ly installed overlay. Without an |
| for the appropriate wire feeder |
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| overlay installed in the Power |
| receptacle (amphenol). |
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| Wave, or an invalid overlay | 2. | If a |
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| installed, the machine will not | ||
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| is attached to the Power Wave, | |
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| have welding output. |
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| then perform the | |
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| 2. | Check to see if the Limits or |
| Remote Control Kit Trigger |
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| Setup overlay is installed on |
| Circuit Test. |
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| the front panel. These two | 3. | Perform the Reconnect |
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| overlays cannot be used for | ||
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| Switch Test #1. | |
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| welding. |
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| 3. Check for proper input voltage | 4. Perform the Output Rectifier | ||
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| Diodes Test. | ||
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| per machine nameplate. |
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| 4. Make certain the reconnect | 5. Perform the Switch Board | ||
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| Test. | ||
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| panel is configured properly. |
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| 5. Check to see that when the | 6. Perform the Snubber and | ||
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| Bleeder Resistor Test. | ||
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| trigger is pulled on the wire |
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| feeder the wire feeder’s voltage | 7. | Perform the Static Capacitor |
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| display changes to indicate arc |
| Balance Test. |
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| voltage. If this does not hap- | 8. | Perform the Dynamic |
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| pen, the feeder or control | ||
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| Capacitor Balance Test. | |
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| cable may be faulty. |
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| 6. Check wire feeder control |
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| cable for loose or faulty con- |
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| nections. |
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| 7. If the machine is connected for |
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| 380VAC or higher and has not |
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| been used for a long period of |
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| time, the capacitors may |
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| require “conditioning.” Let the |
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| Power Wave run at an idle |
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| state for 30 minutes. |
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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, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-
