Lincoln Electric POWER MIG SVM167-A Service Manual page 43

F-7
TROUBLESHOOTING AND REPAIR
Troubleshooting Guide –
components and for troubleshooting of specific circuits.
PROBLEMS
(SYMPTOMS)
There is no gas flow when the gun
trigger is activated . The wire feeds
and the arc voltage is present.
The machine stops feeding wire
while welding. When the gun trig-
ger is released and pulled again,
the wire feed starts.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the
Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877
See Wiring Diagrams for location of specified
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FUNCTION PROBLEMS
1. If a spool gun adapter is installed,
make certain the toggle switch in
the spool gun kit in the correct
position.
2. If a spool gun adapter is NOT
installed, make certain
jumper plug is installed in J5.
See the Wiring Diagram.
3. Check the gas source and hoses
for kinks or leaks.
1. Check for a mechanical restric-
tion in the wire feed path. The
gun may be clogged.
2. Make sure the drive rolls and
guide plates are clean and are
the correct size.
3. Check the spindle for ease of
rotation.
CAUTION
POWER MIG® 215
Observe Safety Guidelines
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
1. Check plug J1 on the control board
for loose or faulty connections. See
Wiring Diagram.
2. Check the gas solenoid by discon-
necting it from leads #108A and
the #116A&B. Apply a 12VDC external
supply to the solenoid. If the sole-
noid does NOT activate then it may
be faulty. Replace.
1. Check the motor armature current.
Normal armature current is 2.0 to 2.7
amps maximum. If the motor arma-
ture current is normal, and the motor
continues to shut-off, the control
board may be faulty. Replace.
2. If the motor armature current is high
(over 2.7 amps) and there are NO
restrictions in the wire feeding path
then the motor or gearbox may be
defective. Replace.
F-7