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| TROUBLESHOOTING AND REPAIR | ||||||
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Troubleshooting Guide – See Wiring Diagrams for location of specified | Observe Safety Guidelines | ||||||
components and for troubleshooting of specific circuits. |
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| detailed in the beginning of this manual. | ||||
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PROBLEMS |
| POSSIBLE AREAS OF |
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| RECOMMENDED |
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(SYMPTOMS) |
| MISADJUSTMENT(S) |
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| COURSE OF ACTION |
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| FUNCTION PROBLEMS |
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There is no gas flow when the gun | 1. If a spool gun adapter is installed, |
| 1. Check plug J1 on the control board | ||||
trigger is activated . The wire feeds | make certain the toggle switch in |
| for loose or faulty connections. See | ||||
and the arc voltage is present. | the spool gun kit in the correct |
| Wiring Diagram. |
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| position. |
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| 2. Check the gas solenoid by discon- | |
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| 2. If a spool gun adapter is NOT |
| necting it from leads #108A and | ||
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| installed, make certain | the |
| #116A&B. Apply a 12VDC external | |
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| jumper plug is installed in J5. |
| supply to the solenoid. | If the sole- | |
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| See the Wiring Diagram. |
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| noid does NOT activate then it may | |
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| be faulty. Replace. |
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| 3. Check the gas source and hoses |
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| for kinks or leaks. |
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The machine stops feeding wire | 1. Check for a mechanical restric- |
| 1. Check the motor armature current. | ||||
while welding. | When the gun trig- | tion in the wire feed path. | The |
| Normal armature current is 2.0 to 2.7 | ||
ger is released and pulled again, | gun may be clogged. |
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| amps maximum. If the motor arma- | |||
the wire feed starts. |
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| ture current is normal, and the motor | |||
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| 2. Make sure the drive rolls and |
| continues to | ||
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| guide plates are clean and are |
| board may be faulty. Replace. | ||
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| the correct size. |
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| 2. If the motor armature current is high | |
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| 3. Check the spindle for ease of |
| (over 2.7 amps) and there are NO | ||
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| rotation. |
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| restrictions in the wire feeding path | |
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| then the motor or gearbox may be | |
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| defective. Replace. |
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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
