TROUBLESHOOTING | ||
|
|
|
| Observe Safety Guidelines detailed in the beginning of this manual. |
|
|
|
|
|
|
|
|
|
| PROBLEMS |
|
|
| POSSIBLE |
| |
| (SYMPTOMS) |
|
|
| CAUSE |
| |
|
|
|
|
|
| OUTPUT PROBLEMS |
|
|
|
|
|
|
|
| |
| No output or reduced output the first |
|
|
| 1. Check input voltages, fuses and |
| |
|
|
| |||||
| time power is applied to the |
|
|
|
| input voltage reconnect proce- |
|
| machine. |
|
|
|
| dures. See Installation section. |
|
|
|
|
|
| 2. | If high input voltage (380VAC or |
|
|
|
|
|
|
| higher) is applied, the capacitors |
|
|
|
|
|
|
| may need conditioning. Let the |
|
|
|
|
|
|
| “unloaded” machine idle for 30 |
|
|
|
|
|
|
| minutes. |
|
|
|
|
|
|
|
| |
| Machine loses output while welding. |
|
|
| 1. Check to make sure the fans are |
| |
| The thermal indicator light is lit. |
|
|
|
| running and operating correctly. |
|
| Normal welding output returns after |
|
|
|
|
|
|
| about 10 minutes. |
|
|
| 2. | Welding application may exceed |
|
|
|
|
|
|
| recommended duty cycle. |
|
|
|
|
|
| 3. | Dirt and dust may have clogged |
|
|
|
|
|
|
| the cooling channels. Blow out |
|
|
|
|
|
|
| unit with clean, dry compressed |
|
|
|
|
|
|
| air. |
|
|
|
|
|
| 4. | Air intake and exhaust louvers |
|
|
|
|
|
|
| may be blocked due to inade- |
|
|
|
|
|
|
| quate clearance around machine. |
|
|
|
|
|
|
|
|
|
| Machine has low OCV, and loses |
|
|
| 1. | Check for faulty connection on |
|
| output while attempting to weld. |
|
|
|
| plug J1 on Control Board and |
|
|
|
|
|
|
| plug J1 on Current Sense Board. |
|
|
|
|
|
| 2. | Check for faulty Current Sense |
|
|
|
|
|
|
| Board. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RECOMMENDED COURSE OF ACTION
If all recommended possible areas of misadjustment have been checked and the problem persists,
Contact your local Lincoln Authorized Field Service Facility.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
INVERTEC STT II (CE)
