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TROUBLESHOOTING & REPAIR | ||||||
TROUBLESHOOTING GUIDE |
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| Observe Safety Guidelines | |||
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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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| FEEDING PROBLEMS |
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Major physical or electrical damage | 1. Contact your local authorized | 1. Contact the Lincoln Electric | ||||
is evident when the sheet metal | Lincoln | Electric Field Service | Service Department, |
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cover(s) are removed. |
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The | 1. Make sure the correct input volt- | 1. Check the on/off switch. | See |
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when the on/off switch is turned to | age is being applied (15 to | the wiring diagram. |
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the ”ON”position. |
| 110VDC). | See Specifications | 2. Check the input rectifier bridge. | ||
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| See the wiring diagram. |
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| 2. Make certain the “Work Clip” is | 3. Perform the Boost Power | |||
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| attached securely to the work | Supply Board Test. |
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| 4. The control board may be faulty. | ||
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| 5. If the Display Board is not lit | ||
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| check the input voltages to the | ||
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| Display Board. See the Wiring | ||
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| Diagram. |
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When the gun trigger is activated | 1. Make sure the contactor is func- | 1. Perform The Contactor Test. | ||||
the wire drive runs and electrode | tioning correctly. |
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wire feeds, but there is no welding |
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| 2. The Control Board may be faulty. | |||
output. |
| 2. Check the current carrying leads |
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| at the contactor and between |
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| the contactor and the feed plate |
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| for loose or faulty connections. |
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| See the Wiring Diagram. |
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| 3. Make sure the welding gun is |
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| connected correctly and func- |
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| tioning correctly. |
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| 4. Make certain the DC power |
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| source is functioning correctly. |
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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
