TROUBLESHOOTING | ||
|
|
|
| Observe all Safety Guidelines detailed throughout this manual |
|
|
|
|
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Drive rolls turn, but wire will not | a. Gun cable kinked and/or twisted. | a. Keep as straight as possible. |
|
feed or wire feeding is rough. |
| Inspect cable and replace if | nec- |
|
| essary. |
|
| b. Wire jammed in gun and cable. | b. Remove wire from gun and cable | |
|
| – feed in new wire. Note any |
|
|
| obstruction. Replace liner if |
|
|
| necessary. |
|
| c. Incorrect drive rolls and guide | c. Be sure the wire diameter being | |
| tubes. | used is stamped on drive rolls | |
|
| and guide tubes. Replace if | nec- |
|
| essary. |
|
| d. Gun cable liner dirty. | d. Clean liner or replace. |
|
| e. Worn drive rolls. | e. Replace or reverse split drive roll | |
|
| type. |
|
| f. Electrode rusty and/or dirty. | f. Replace the electrode if it is rusty. | |
| g. Worn or improper size cable liner. | g. Replace cable liner. |
|
| h. Partially flashed, melted or | h. Replace the contact tip. |
|
| improper size contact tip. |
|
|
|
|
|
|
Variable or “hunting” arc. | a. Contact tip worn or incorrect size. | a. Replace contact tip. |
|
| b. Worn or undersize ground cables | b. Inspect – repair or replace as |
|
| or poor ground connections. | necessary. |
|
| c. Loose electrode connections. | c. 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® 400 DUAL PROCEDURE GUNS