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TROUBLESHOOTING AND REPAIR |
POWER FEED
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | |||
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FUNCTION PROBLEMS (Continued) |
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The ammeter on the Control Box | 1. Make sure the DIP switches are | 1. | Perform the Current Trans- | ||
does not function properly even | configured correctly for the |
| ducer Test. |
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though the STATUS LEDs are | welding process and polarity |
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steady green. | being used. See Setting DIP | 2. | The display board, located in | ||
| Switches in the Wire Drive in |
| the control box, may be faulty. | ||
| the Installation section of this |
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| manual. | 3. | The control board, located in the | ||
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| power source, may be faulty. | ||
| 2. Check the following connections |
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| on the Power Wave 455 |
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| machine. Check for loose or |
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| faulty connections between plug |
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| J90 at the current transducer |
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| and plug J21 on the Power |
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| Wave 455 control board. |
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The display and/or indicator LEDs | 1. Check for loose or faulty con- | 1. | Check suspected potentiometer | ||
do not change when their corre- | nections between the encoder |
| and/or switches | for correct | |
sponding switches and or knobs | panel and the Control Box con- |
| resistances and operation. | ||
are activated or turned. | trol board. |
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| 2. | Perform the Encoder PC Board | ||
| 2. Check for loose or faulty con- |
| Test. |
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| nections between the appropri- |
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| ate switches and the Control | 3. | The Control Box control board | ||
| Box control board. |
| may be faulty. |
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The mode and/or settings change | 1. Contact the Lincoln Electric ser- |
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while welding under normal condi- | vice dept. for possible software |
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tions. | updates |
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| (Please ref. your current soft- |
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| ware number.) |
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The feeder resets when the gun | 1. The auxiliary reconnect (Lead | 1. | Perform the Power Board Test. | ||
trigger is activated. The LEDs blink | “A”) may not be configured cor- |
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and the displays are intermittent. | rectly. See Figure A.2. in the | 2. | Perform | the | Auxiliary |
| Installation Section of this man- |
| Transformer Test #1. | ||
| ual. |
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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
