Lincoln Electric POWER MIG 140 Manuel De L'opérateur page 30

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PROBLEMS
(SYMPTOMS)
Major physical or electrical damage
is evident.
No wire feed, weld output or gas
flow when gun trigger is pulled. Fan
does NOT operate.
No wire feed, weld output or gas
flow when gun trigger is pulled.
Fan operates normally.
PROBLEMS
(SYMPTOMS)
No wire feed when gun trigger is
pulled. Fan runs, gas flows and
machine has correct open circuit
voltage (33V) – weld output.
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
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
OUTPUT PROBLEMS
"Do not Plug in machine or turn it on".
Contact your local Authorized Field
Service Facility.
1. Make sure correct voltage is
applied to the machine.
2. Make certain that power switch
is in the ON position.
3. Make sure circuit breaker is
reset.
1. The thermostat may be tripped
due to overheating. Let machine
cool. Weld at lower duty cycle.
2. Check for obstructions in air
flow. Check Gun Trigger connec-
tions. See Installation section.
3. Gun trigger may be faulty.
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.
POWER MIG® (140, 180 MODELS)
CAUTION
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.
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
Service