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 |
|
|
|
|
|
| TROUBLESHOOTING GUIDE | ||
| detailed in the beginning of this manual. |
|
|
|
|
|
|
| ||
|
|
|
|
|
| |||||
| PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
| |||||
| (SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
| |||||
|
|
|
|
|
|
|
| |||
|
|
|
| FUNCTION PROBLEMS |
|
|
| |||
| Auxiliary receptacle is “dead” no | 1. | Circuit breaker CB1 (on case | 1. | Perform the Auxiliary |
| ||||
| auxiliary voltage. |
|
| front) may have opened. Reset. |
| Transformer Test. |
| |||
|
|
| 2. | Circuit breaker CB3 (in recon- |
|
|
| |||
|
|
|
| nect area) may have opened. |
|
|
| |||
|
|
|
| Reset. |
|
|
|
|
|
|
|
|
| 3. | On PW 405 models, the circuit |
|
|
| |||
|
|
|
| breaker | CB4 | protects the |
|
|
| |
|
|
|
| 220VAC | receptacle. | Reset if |
|
|
| |
|
|
|
| tripped. |
|
|
|
|
|
|
|
|
|
| |||||||
| A fault or error code is displayed. | 1. See Fault Code Explanations. | 1. See Fault Code Explanations. | |||||||
|
|
|
|
|
|
|
|
| ||
| General degradation of the weld | 1. | Check | for feeding | problems, | 1. | Perform the Voltage and |
| ||
| performance. |
|
| bad connections, | excessive |
| Current Calibration |
| ||
|
|
|
| loops in cabling, etc. |
|
| Procedure. |
| ||
|
|
| 2. | Verify weld mode is correct for | 2. | Perform the Current |
| |||
|
|
|
| processes. |
|
|
| Transducer Test. |
| |
|
|
| 3. | The power source may require | 2. | Perform the Output Diode |
| |||
|
|
|
| calibration. |
|
|
| Module Test. |
| |
|
|
| 4. | Check the actual current dis- | 5. | The control board may be |
| |||
|
|
|
| played on the Power Feed 10 |
| faulty. |
| |||
|
|
|
| vs. actual current measured via |
|
|
| |||
|
|
|
| external meter. |
|
|
|
|
| |
|
|
| 5. | Check the actual voltage dis- |
|
|
| |||
|
|
|
| played on the Power Feed 10 |
|
|
| |||
|
|
|
| vs. actual voltage measured via |
|
|
| |||
|
|
|
| external meter. |
|
|
|
|
| |
|
|
| 6. | Check the actual WFS displayed |
|
|
| |||
|
|
|
| on the Power Feed 10 vs. actual |
|
|
| |||
|
|
|
| WFS measured | via external |
|
|
| ||
|
|
|
| meter. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
