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 AND REPAIR | ||||||
|
|
|
|
|
|
|
|
Troubleshooting Guide – See Wiring Diagrams for location of specified | Observe Safety Guidelines | ||||||
components and for troubleshooting of specific circuits. | detailed in the beginning of this manual. | ||||||
|
|
|
|
|
| ||
PROBLEMS |
| POSSIBLE AREAS OF |
| RECOMMENDED |
| ||
(SYMPTOMS) |
| MISADJUSTMENT(S) |
| COURSE OF ACTION |
| ||
|
|
|
|
|
|
|
|
|
|
|
| WELDING PROBLEMS |
|
| |
The weld bead is narrow or ropy. | 1. | Make sure the welding proce- |
| 1. Perform the Output Bridge Rectifier | |||
May have porosity with the elec- |
| dures and electrode polarity are |
| Test. |
| ||
trode stubbing into the plate. |
| correct for the process being |
|
|
| ||
|
|
|
| used. |
| 2. The output capacitors may be faulty. | |
|
|
|
|
|
| Check for loose connections at the | |
|
|
| 2. | Make certain the shielding gas is |
| capacitors. Also check | for leaky |
|
|
|
| correct and the flow is proper. |
| capacitors. Replace if necessary. | |
|
|
| 3. | Make sure the weld joint is not |
| WARNING: The liquid electrolyte in | |
|
|
|
| “contaminated”. |
| these capacitors is toxic. Avoid con- | |
|
|
|
|
|
| tact with any portion of your body. | |
|
|
|
|
| |||
The contact tip seizes in the gas dif- | 1. The tip is being over heated due |
|
|
| |||
fuser. |
|
| to excessive current and/or high |
|
|
| |
|
|
|
| duty cycle. |
|
|
|
|
|
| 2. A light application of high temper- |
|
|
| |
|
|
|
| ature |
|
|
|
|
|
|
| applied to the contact tip threads. |
|
|
|
|
|
|
|
|
|
|
|
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
