Lincoln Electric SP-135 PLUS IM725 Operator's Manual page 41

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Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
No wire feed when gun trigger is
pulled. Fan runs, gas flows and
machine has correct open circuit
voltage (28 vdc maximum) – weld
output.
Wire feed speed motor runs very
fast. Weld output, gas flow and fan
operate normally.
The wire begins to feed butshuts off
after a short time, and will feed
again for anothershort interval only
if the trigger is released and
pressed again. (See description
under wire feed overload protec-
tion).
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
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FEEDING PROBLEMS
1. If the wire drive motor is running
check to see if the correct wire
is in the machine.
2. If the wire drive motor is running
make sure that the correct drive
rolls are installed in the
machine.
3. Check for clogged cable liner or
feeding problems.
1. Make sure that the wire speed
control is not set at maximum.
1. Wire spool friction brake adjust-
ment set too tight. Check adjust-
ment of the wire spool friction
brake. See "Friction Brake
Adjustment" in the "OPERA-
TION" section of this manual.
2. Idle roll pressure adjustment set
too high. Check adjustment of
the idle roll pressure. See "Wire
Threading" in The "OPERA-
TION" section of this manual.
3. Damaged or poorly maintained
wire feed system.
1. Check for clogged or damaged
cable liner, contact tip, and guide
tubes. Replace any damaged or
excessively worn parts.
2. Perform "ROUTINE
PERIODIC MAINTENANCE" as
described in this manual.
CAUTION
SP-135 PLUS
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
Contact your local Lincoln
Authorized Field Service Facility.
AND
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