Lincoln Electric Pro-MIG 140 Manual Del Operador página 28

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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.
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.
TROUBLESHOOTING
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.
CAUTION
Pro-MIG 140
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field
Facility.
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Service