Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Section TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
Return to Master TOC
| TROUBLESHOOTING & REPAIR | |
| TROUBLESHOOTING GUIDE | Observe Safety Guidelines |
|
| detailed in the beginning of this manual. |
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
|
| |||
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION |
|
| |||
|
|
|
|
|
|
|
|
| CUTTING PROBLEMS |
|
|
|
|
|
|
The pilot arc is normal, but the arc | 1. Make sure the operating proce- | 1. | Check the lead connections X2, | ||||
will not transfer to the workpiece. | dure is correct for the process. |
| X4 and B21 at the output board. | ||||
| See the Operation section of | 2. | Check | the | output | control | |
| this manual. | ||||||
|
| potentiometer (R1). | Normal | ||||
|
|
| |||||
| 2. Make sure the work clamp is |
| resistance is | 10 ohms. | Also | ||
| connected tightly to the work- |
| check the associated leads for | ||||
| piece. |
| loose or faulty connections to | ||||
| 3. The workpiece must be electri- |
| the display | board. See | the | ||
|
| Wiring Diagram. |
|
| |||
| cally conductive material. |
|
|
| |||
|
|
|
|
|
|
| |
|
| 3. | Check leads #216, #218 and | ||||
|
|
| #219 between the | display | |||
|
|
| board and the control board. | ||||
|
|
| Check for loose or faulty con- | ||||
|
|
| nections. | See the | Wiring | ||
|
|
| Diagram. |
|
|
|
|
|
| 4. | The control board may be | ||||
|
|
| faulty. Replace. |
|
| ||
|
| 5. | The output board may be faulty. | ||||
|
|
| Perform | the | Output | Board | |
|
|
| Resistance Test. |
|
| ||
|
| 6. | The display board may be | ||||
|
|
| faulty. Replace. |
|
| ||
|
|
|
|
|
|
|
|
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
