Lincoln Electric POWER MIG 140 Operator's Manual page 28

POWER MIG 140 & 180 MODELS
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.
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
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
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 connections. See
Installation section.
3. Gun trigger may be faulty.
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.
4. Check if the spool gun switch, located in
the wire drive compartment, is set to the
desired location.
CAUSE
If all recommended possible areas of
misadjustment have been checked and the
problem persists, CONTACT YOUR LOCAL
LINCOLN AUTHORIZED FIELD SERVICE
FACILITY.
If all recommended possible areas of
misadjustment have been checked and the
problem persists, CONTACT YOUR LOCAL
LINCOLN AUTHORIZED FIELD SERVICE
FACILITY
E-2
TROUBLESHOOTING
RECOMMENDED
COURSE OF ACTION