Lincoln Electric IM591 UWW-170 - Manual (Page 41)

E-3 E-3 TROUBLESHOOTING
SP 170-I
PROBLEMS
(SYMPTOMS)
No wire feed when gun trigger is
pulled. Fan runs, gas flows and
machine has correct open circuit
voltage (33 VDC maximum)
– weld
output.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
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.
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
FEEDING PROBLEMS
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
Low or no gas flow when gun
trigger is pulled. Wire feed, weld
output and fan operate normally.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
1. Check gas supply, flow regulator
and gas hoses.
2. Check gun connection to
machine for obstruction or leaky
seals.
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
GAS FLOW PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.