
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. |
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
| POSSIBLE AREAS OF |
|
|
|
| |||
|
| PROBLEMS | RECOMMENDED |
|
| |||||||
|
| (SYMPTOMS) |
|
| MISADJUSTMENT(S) |
| COURSE OF ACTION |
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| TIG MODE PROBLEMS |
|
|
|
|
|
|
|
| Machine has low output when in |
|
| 1. Machine must be in “Local” |
| Machine controls may be set incor- |
| ||||
|
| TIG |
|
| Control Mode when |
| rectly. |
|
| |||
|
|
|
|
|
| used. |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Contact The Lincoln Electric |
|
| ||
|
|
|
|
|
|
|
| Service Department (216) 383- |
|
| ||
|
|
|
|
|
|
|
| 2531 or |
| |||
|
|
|
|
|
|
|
|
|
| |||
|
| Weak high frequency - machine |
|
| 1. Spark gap may be misadjusted. |
| 1. | Check for an open or arcing |
| |||
|
| has normal welding output. |
|
| Check and reset per |
|
| high frequency component. |
|
| ||
|
|
|
|
|
| maintenance instructions. |
|
| Replace as required. |
|
| |
|
|
|
|
|
| 2. Improper shielding gas flow. |
|
| (Examples. R3, R4, C2.) Refer |
| ||
|
|
|
|
|
|
|
| to wiring diagram. |
|
| ||
|
|
|
|
|
| Adjust for a flow of 10 to 30 |
|
|
|
|
|
|
|
|
|
|
|
| CFH (4.7 to 14.1 l/min.) for |
| 2. | If spark is weak at the spark |
| ||
|
|
|
|
|
| most applications. |
|
| gap check or replace high fre- |
| ||
|
|
|
|
|
| 3. Work and electrode cables in |
|
| quency circuit. ( Examples. T3, |
| ||
|
|
|
|
|
|
|
| C3, L3, L4.) |
|
| ||
|
|
|
|
|
| poor condition allowing high |
|
|
|
|
|
|
|
|
|
|
|
| frequency to “Leak Off”. Use |
|
|
|
|
|
|
|
|
|
|
|
| good quality cables with a high |
|
|
|
|
|
|
|
|
|
|
|
| natural rubber content, such |
|
|
|
|
|
|
|
|
|
|
|
| as Lincoln Stable Arc Cable. |
|
|
|
|
|
|
|
|
|
|
|
| Cables should be as short as |
|
|
|
|
|
|
|
|
|
|
|
| possible. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
| The display shows zero amps, but |
|
| 1. The arc start switch or amptrol |
| 1. | Check Trigger circuit. See Arc |
| |||
|
| indicates open circuit voltage |
|
| may be defective. There should |
|
| Start Trigger Circuit Test. |
|
| ||
|
| (approximately 53V). The arc start |
|
| not be any continuity between |
|
|
|
|
|
| |
|
| switch or amptrol is not actuated. |
|
| pins “D” and “E” on the arc start | 2. | Control board may be faulty. |
| ||||
|
|
|
|
|
| cable connector, unless the |
|
| Replace. |
|
| |
|
|
|
|
|
| unit is actuated. |
|
|
|
|
|
|
|
|
|
|
|
| 2. If an amptrol is not being used, |
|
|
|
|
|
|
|
|
|
|
|
| the machine must be in the |
|
|
|
|
|
|
|
|
|
|
|
| Local Control Mode. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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