E-4 TROUBLESHOOTING
PROBLEMS | POSSIBLE AREAS OF |
(SYMPTOMS) | MISADJUSTMENT(S) |
| OUTPUT PROBLEMS |
Solenoid does not close when | 1. Make certain that plugs J2 |
trigger is pulled or purge button | and J3 are connected to the |
is pressed. Wire feeds properly. | control board securely. |
|
| WELD PROBLEMS |
Variable or “hunting” arc. | 1. | Worn and/or melted contact |
|
| tip |
| 2. | Worn work cable or poor |
|
| work connection. |
| 3. | Loose electrode connect- |
|
| ions. |
|
| faulty connections. |
| 4. | Wrong electrode polarity for |
|
| process being used. |
Weld porosity, narrow and ropey | 1. Contaminated weld joint or | |
bead, or electrode stubbing into | improper procedures. - | |
plate when welding. | Clean joint | and check |
| procedure (wire speed and | |
| all voltage). |
|
|
| |
Motor feeds but there is no wire | 1. Make sure all molex plugs | |
feed speed control. | and leads | are securely |
| connected to the control | |
| board. |
|
| 2. Check speed sensor - see | |
| maintenance section. | |
RECOMMENDED COURSE OF ACTION
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 authorized field service facility for technical troubleshooting assistance before you proceed.
