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| TROUBLESHOOTING & REPAIR | |
| TROUBLESHOOTING GUIDE | Observe Safety Guidelines |
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| detailed in the beginning of this manual. |
PROBLEMS | POSSIBLE AREAS OF |
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(SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION |
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| OUTPUT PROBLEMS |
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No constant voltage (CV) welding | 1. Make sure the Range switch | 1. | Check the operation of the CV | |||||||
output. Constant current (CC) and | (S2) is in the proper position |
| output contactor. Make certain | |||||||
the auxiliary power are operating | and “seated” correctly. |
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| it is “closing” and the contacts | ||||||
normally. | 2. Put | the | control | cable | switch |
| have continuity when contactor | |||
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| is | activated. | See | Wiring | |||||
| (S8) | in the “No | control | cable” |
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| Diagram. |
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| position. | If CV output is |
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| restored, | the output contactor | 2. Check the operation of the | |||||||
| is functioning correctly. Place a |
| Range swtich (S2), and check | |||||||
| jumper wire from pin “D” to Pin |
| the associated wires for loose | |||||||
| “C” in the 14 pin amphenol. If |
| or | faulty connections. | See | |||||
| CV output is restored, the prob- |
| Wiring Diagram. |
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| lem | is in | the control cable or | 3. Check the continuity from leads | ||||||
| wire feeder. If CV output is NOT | |||||||||
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| C1, C2, C3, and C4 to lead W1 | ||||||||
| restored, | check | the continuity |
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| located in the main stator. See | ||||||||
| of leads #2 and #4 within the |
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| Wiring Diagram. |
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| wiring harness. | See | Wiring |
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| Diagram. |
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| 3. Make sure the wire feeder and |
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| welding cables | are connected |
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| correctly. |
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The constant voltage (CV) welding | 1. Make sure the Range switch | 1. | Check the operation of the CV | |||||||
output is low or unstable. | (S2) is in | the proper position |
| output contactor. | Make sure it | |||||
Constant current (CC) and auxiliary | (CV) and “seated” correctly. |
| is “closing” and the contacts | |||||||
power are operating normally. | 2. Make sure the wire feeder and |
| have continuity when the con- | |||||||
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| tactor is activated. See Wiring | ||||||||
| welding cables | are connected |
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| Diagram. |
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| correctly. |
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| 2. Check the operation of the | ||||
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| Range switch (S2), and check | |||
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| the associated wires for loose | |||
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| or | faulty connections. | See | |
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| Wiring Diagram. |
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| 3. The capacitor bank (C6, C7, C8, | ||||
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| and C9) may be faulty. Check | |||
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| or replace. |
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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
RANGER
