E-2

TROUBLESHOOTING

E-2

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

PROBLEMS

POSSIBLE

(SYMPTOMS)

CAUSE

 

 

OUTPUT PROBLEMS

Major physical or electrical damage

None

is evident.

Contact your local Authorized Field

 

Service Facility.

 

 

 

No wire feed, weld output or gas

1.

Make sure correct voltage is

flow when gun trigger is pulled. Fan

 

applied to the machine (115vac).

does NOT operate.

 

 

 

2.

Make certain that power switch

 

 

is in the ON position.

 

3.

Make sure circuit breaker is

 

 

reset.

 

 

 

No wire feed, weld output or gas

1.

The thermostat may be tripped

flow when gun trigger is pulled.

 

due to overheating. Let machine

Fan operates normally.

 

cool. Weld at lower duty cycle.

 

2.

Check for obstructions in air

 

 

flow. Check Gun Trigger connec-

 

 

tions. See Installation section.

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.

3. Gun trigger may be faulty.

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.

Pro-MIG 140

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Lincoln Electric Pro-MIG 140 manual Problems Possible Symptoms Cause, Output Problems, Recommended Course of Action