Lincoln Electric RANGER 305G EFI Service Manual page 20

LINCOLN ELECTRIC
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
An across-the-arc type wire
feeder does function when
connected to the weld output
of the machine. The machine
operates normally in CC-STICK
mode and has normal AC
auxiliary output.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the
Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
WELD OUTPUT PROBLEMS
1. Check that the welding
terminal switch is in the "WELD
TERMINALS ON" position.
2. Check that the weld mode
switch in the correct position
for the process being used,
typically "CV-WIRE" mode.
3. Check for poor weld cable
connections between the
feeder and the welder output
terminal and between the work
and the other weld output
terminal.
4. Check that the wire feeder's
work sensing lead is properly
connected to the work piece
and is in good condition.
5. The wire feeder may be
defective.
Ranger® 305G EFI Service Manual
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Use a voltmeter to check for
the presents about 58 VDC
open circuit voltage (OCV)
across the output studs of the
machine.
2. If the OCV is low, there may
be a problem with the mode
switch. Perform the Control
Potentiometer and Mode
Switch Test Procedure.
3. If there is no OCV, see the
troubleshooting chart section
for "No Welding Output In Any
Mode ".
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