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TROUBLESHOOTING & REPAIR |
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TROUBLESHOOTING GUIDE |
| Observe Safety Guidelines | |
| detailed in the beginning of this manual. | ||
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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 (no | 1. The 42VAC circuit breaker CB1 | 1. If 42VAC is NOT present at pins | |
open circuit voltage), and the wire | may be tripped. Reset if neces- | "K" and "I" on the 14 pin amphe- | |
feeder does not feed wire when the | sary. | nol, perform the T1 Auxiliary | |
gun trigger is pulled. | 2. Check the 4 amp slow blow fuse | Transformer Test. | |
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| located on the reconnect panel. | 2. Check leads #43 and #212C for | |
| Replace if faulty. | loose or faulty connections | |
| 3. Put a jumper between pins "A" | between the T1 auxiliary trans- | |
| former and the remote protec- | ||
| and "C" on the 5 pin amphenol | ||
| tion board. See the Wiring | ||
| located on the | ||
| Diagram. Also check the conti- | ||
| feeder. If wire feeds, check the | ||
| nuity through the remote protec- | ||
| gun trigger. Repair or replace if | ||
| tion board to the 14 pin amphe- | ||
| necessary. | ||
| nol. See the Remote Protection | ||
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| 4. Check for the presence of | Board Schematic. | |
| 42VAC at pins "K" and "I" on the |
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| 14 pin amphenol. If the 42VAC |
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| is present and the feeder does |
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| not work, the problem is in the |
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| feeder control cable or the wire |
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| feeder. |
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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
