|
|
|
| TROUBLESHOOTING |
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
| |||||||||||||
|
|
|
| Observe all Safety Guidelines detailed throughout this manual | ||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
| PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | ||||||||||||||
|
| (SYMPTOMS) |
|
| MISADJUSTMENT(S) |
|
| COURSE OF ACTION |
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| OUTPUT PROBLEMS |
|
|
|
|
|
|
|
|
|
|
| Major Physical or Electrical |
|
| 1. | Contact your Local Lincoln |
|
|
|
|
|
|
|
|
| |||
|
| Damage is Evident |
|
|
| Authorized Field Service Facility. |
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
| There is no wire feed or open cir- |
|
| 1 | The gun trigger or cable may be |
|
|
|
|
|
|
|
|
| |||
|
| cuit voltage when the gun trigger is |
|
|
| faulty. Check or replace gun |
|
|
|
|
|
|
|
|
| |||
|
| pulled. The machine displays are |
|
|
| assembly. |
|
|
|
|
|
|
|
|
| |||
|
| lit indicating input power to the PM |
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
| 255. |
|
|
|
|
| 2. | The thermal protection circuit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| may be activated. If this is the |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| case, the display will show “too |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| hot”. Allowing the machine to |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| cool will clear the error condition. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 3. | Make sure input voltage is cor- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| rect and matches nameplate rat- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ing and reconnect panel configu- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ration. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
| Output voltage and wire feed is pre- |
|
| 1. | Remove gun assembly from |
|
|
|
|
|
|
|
|
| |||
|
| sent when gun trigger is not pulled |
|
|
| machine. If problem is solved |
|
|
|
|
|
|
|
|
| |||
|
| (not activated). |
|
|
| gun assembly is faulty. Repair or |
|
| If all recommended possible areas |
|
|
| ||||||
|
|
|
|
|
|
|
|
| replace. |
|
| of misadjustment have been |
|
|
| |||
|
|
|
|
|
|
|
| 2. | If problem persists when gun |
|
| checked and the problem persists, |
|
|
| |||
|
|
|
|
|
|
|
|
|
| Contact your local Authorized |
|
|
| |||||
|
|
|
|
|
|
|
|
| assembly is removed from |
|
| Field Service Facility. |
|
|
| |||
|
|
|
|
|
|
|
|
| machine then the problem is |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| within the PM 255. |
|
|
|
|
|
|
|
|
|
|
| Machine output is low. Welds are |
|
| 1. | Check input voltage. Make sure |
|
|
|
|
|
|
|
|
| |||
|
| “cold”, weld bead is rounded or |
|
|
| input voltage matches name- |
|
|
|
|
|
|
|
|
| |||
|
| bumped up demonstrating poor |
|
|
| plate rating and reconnect panel |
|
|
|
|
|
|
|
|
| |||
|
| wetting into plate. |
|
|
| configuration. |
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
| 2. | Make sure settings for wire feed |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| speed and voltage are correct |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| for process being used. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 3. | Make sure output polarity is cor- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| rect for process being used. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 4. | Check welding cables and gun |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| assembly for loose or faulty con- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| nections. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
LOCAL AUTHORIZED FIELD SERVICE FACILITY for assistance before you proceed.
PM 255