E-4

TROUBLESHOOTING

E-4

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE AREAS OF MISADJUSTMENT (S)

RECOMMENDED

COURSE OF ACTION

 

No welding power output.

1. Poor work lead connection to

 

 

 

work.

 

 

2.

"Weld Terminals" switch in

 

 

 

wrong position.

 

 

3.

Faulty PC board or welder alter-

 

 

 

nator.

 

 

 

 

Welder has output but no control.

1. Poor remote / control cable con-

 

 

 

nection to 6 pin or 14 pin

 

 

 

Amphenol connector.

 

 

2.

Faulty remote cable or faulty

 

 

 

wire feeder or wire feeder cable.

 

 

3.

Faulty control potentiometer or

 

 

 

PC board.

 

 

 

 

Wire feeder does not work when

1. Wire Feeder Power circuit

 

control cable is connected to 14 pin

 

breaker open.

 

Amphenol.

 

 

 

 

2.

Faulty control cable.

 

 

3.

Faulty wire feeder.

 

 

 

 

No auxiliary power.

1. Open circuit breakers.

 

 

2.

Faulty connections to auxiliary

 

 

 

receptacles.

 

 

3.

GFCI tripped (if installed).

 

 

4.

Faulty PC board or welder alter-

 

 

 

nator.

 

 

 

 

 

 

 

 

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.

RANGER 250

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Lincoln Electric 250 manual Troubleshooting