Lincoln Electric SP-170T IM794 Operator's Manual page 30

E-3
PROBLEMS
(SYMPTOMS)
No wire feed when gun trigger is
pulled. Fan runs, gas flows and
machine has correct open circuit
voltage (33 vcd 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 AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.
TROUBLESHOOTING
Observe Safety Guidelines detailed in the beginning of this manual.
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
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
Contact your local Lincoln
Authorized Field Service Facility.
SP-170T
E-3