Lincoln Electric Pro-MIG 140 User Manual download pdf (Page 28)

E-3

TROUBLESHOOTING

E-3

Pro-MIG 140

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.

CAUTION

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

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.

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.

FEEDING PROBLEMS

GAS FLOW PROBLEMS

Observe all Safety Guidelines detailed throughout this manual

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Lincoln Electric Pro-MIG 140 User Manual Page 28