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 | ||||
|
|
| ||
|
|
| ||
Observe Safety Guidelines detailed in the beginning of this manual. |
|
| ||
|
|
|
|
|
PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
|
(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
|
|
|
|
|
|
|
| WELDING PROBLEMS |
|
|
The arc is unstable - poor |
| 1. Check for correct input voltage | 1. Check for 17 to 33 VDC |
|
starting. |
| to the machine. | (dependent on Arc Voltage |
|
|
| 2. Check for proper electrode | Control Setting) at the |
|
|
| machine’s output terminals. If | ||
|
| polarity for process. | ||
|
| present check gun and work | ||
|
|
| ||
|
| 3. Check gun tip for wear or | cable. |
|
|
|
|
| |
|
| 2. If OCV is low, check output |
| |
|
|
|
| |
|
| 4. Check for proper gas and flow | capacitor and output diodes. | |
|
|
|
| |
|
| rate for process. | 3. Check for loose connections | |
|
|
| ||
|
| 5. Check work cable for loose or | at the output terminals, the |
|
|
| choke and all heavy current |
| |
|
| faulty connections. |
| |
|
| carrying leads. See Wiring |
| |
|
|
|
| |
|
| 6. Check gun for damage or | Diagram. |
|
|
| breaks | 4. The Control P.C. Board may |
|
|
|
|
| |
|
|
| be faulty. Replace. |
|
|
|
|
|
|
|
| GAS FLOW PROBLEMS |
|
|
Low or no gas flow when gun | 1. Check gas supply, flow | 1. Check the gas solenoid by |
| |
trigger is pulled. Wire feed, weld | regulator and gas hoses. | disconnecting it from the |
| |
output and fan operate normally. | 2. Check gun connection to | control board and applying a | ||
|
| 12 vdc external supply to the | ||
|
| machine for obstruction or | ||
|
| gas solenoid. If solenoid does | ||
|
| leaky seals. | ||
|
| not activate it may be faulty. | ||
|
|
| Replace. |
|
|
|
| 2. The control P.C. board may |
|
|
|
| be faulty. Replace. |
|
|
|
|
|
|
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
