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 | ||
|
|
|
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | |
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | |
|
|
|
|
|
| FUNCTION PROBLEMS |
|
|
|
| |
No control of arc voltage. Wire feed- | 1. The arc voltage control poten- | 1. The arc voltage control poten- | |
ing is normal. |
| tiometer may be dirty. Rotate | tiometer may be faulty. Check or |
|
| several times and check if prob- | replace. See Wiring Diagram. |
|
| lem is resolved. |
|
|
|
| 2. Perform the SCR Rectifier |
|
|
| Assembly Tests. |
|
|
| 3. The control board may be faulty. |
|
|
| Replace. |
|
|
| |
There is no gas flow when gun trig- | 1. Check gas source and hoses for | 1. Check the gas solenoid by dis- | |
ger is pulled. Wire feeds and weld |
| leaks or kinks. | connecting it from the control |
voltage is present. |
|
| board (Plug J8) and applying a |
|
|
| 12 VDC external supply to the |
|
|
| gas solenoid. If the solenoid |
|
|
| does NOT activate then it may |
|
|
| be faulty. Replace. |
|
|
| 2. The control broad may be faulty. |
|
|
| Replace. |
|
|
|
|
The machine stops feeding wire | 1. | Check for adequate wire supply. | 1. Check the motor armature cur- |
while welding. |
|
| rent. Normal armature current is |
| 2. | Check for mechanical restric- | 2.0 to 2.7 amps maximum. If |
|
| tions in the wire feeding path. | the motor armature current is |
|
| The gun may be clogged. | normal the control board may be |
|
|
| faulty. Replace. |
| 3. Check gun liner and tip are cor- |
| |
|
| rect for wire size being used. | 2. If the motor armature current is |
|
|
| high (over 2.7 amps) and there |
| 4. Check spindle for ease of rota- | are NO restrictions in the wire | |
|
| tion. | feeding path then the motor or |
|
|
| gear box may be defective. |
| 5. If Timer Option Kit is installed, | Replace. | |
|
| make sure spot timer knob is |
|
|
| set to OFF. |
|
|
|
|
|
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
