| TROUBLEShOOTING |
| ||||
|
|
|
|
|
|
|
| Observe all Safety Guidelines detailed throughout this manual |
| ||||
|
|
|
|
|
|
|
| PROBLEMS | POSSIBLE CAUSE | REMEDY |
| ||
| (SYMPTOMS) |
| ||||
|
|
|
|
|
| |
|
|
|
|
| ||
|
| PROBLEMS |
|
| ||
|
|
| ||||
Drive rolls turn, but wire will not feed | 1. Gun cable kinked and/or twisted. | 1. Keep as straight as possible. | ||||
or wire feeding is rough. |
|
|
| Inspect cable and replace if | nec- | |
|
|
|
|
| essary. |
|
|
| 2. Wire jammed in gun and cable. | 2. Remove wire from gun and cable | |||
|
|
|
|
| – feed in new wire. Note any | |
|
|
|
|
| obstruction. Replace liner if | nec- |
|
|
|
|
| essary. |
|
|
| 3. Incorrect | drive rolls | and guide | 3. Be sure the wire diameter being | |
|
| tubes. |
|
| used is stamped on drive rolls and | |
|
|
|
|
| guide tubes. Replace if neces- | |
|
|
|
|
| sary. |
|
|
| 4. Gun cable liner dirty. |
| 4. Clean liner or replace. |
| |
|
| 5. Worn drive rolls. |
| 5. Replace or reverse split drive roll | ||
|
|
|
|
| type. |
|
|
| 6. Electrode rusty and/or dirty. | 6. Replace the electrode if it is rusty. | |||
|
| 7. Worn or improper size cable liner. | 7. Replace cable liner. |
| ||
|
| 8. Partially | flashed, | melted or | 8. Replace the contact tip. |
|
|
| improper size contact tip. |
|
| ||
|
|
|
| |||
Variable or “hunting” arc. | 1. Contact tip worn or incorrect size. | 1. Replace contact tip. |
| |||
|
| 2. Worn or undersize work cables or | 2. Inspect – repair or replace as nec- | |||
|
| poor ground connections. | essary. |
| ||
|
| 3. Loose electrode connections. | 3. Be sure the following connections | |||
|
|
|
|
| are tight: electrode cable to wire | |
|
|
|
|
| feeder and power source, work | |
|
|
|
|
| cable to power source and work, | |
|
|
|
|
| gun cable to wire feeder contact | |
|
|
|
|
| block, gun nozzle to body and | |
|
|
|
|
| contact tip to nozzle. |
|
|
|
|
|
|
|
|
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
MAGNUM® PRO 250, 350, 450 & 550 AMP
