Lincoln Electric Pro-MIG 140 manual Problems Symptoms, Possible Cause, Feeding Problems

E-3	TROUBLESHOOTING	E-3
	Observe all Safety Guidelines detailed throughout this manual

PROBLEMS (SYMPTOMS)

No wire feed when gun trigger is pulled. Fan runs, gas flows and machine has correct open circuit voltage (32VDC maximum) – weld output.

Low or no gas flow when gun trigger is pulled. Wire feed, weld output and fan operate normally.

POSSIBLE

CAUSE

FEEDING PROBLEMS

1.If the wire drive motor is running make sure that the correct drive rolls are installed in the machine.

2.Check for clogged cable liner or contact tip.

3.Check for proper size cable liner and contact tip.

GAS FLOW PROBLEMS

1.Check gas supply, flow regulator and gas hoses.

2.Check gun connection to machine for obstruction or leaky seals.

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.

Pro-MIG 140