TROUBLESHOOTING & REPAIR
F-13 F-13
RANGER 305D
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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.
PROBLEMS
(SYMPTOMS) POSSIBLE AREAS OF
MISADJUSTMENT(S) RECOMMENDED
COURSE OF ACTION
MISC. WELD ISSUES
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.
1. Check that the welding terminal
switch is in the “WELD TERMI-
NALS ON” position.
2. Check that the WELD MODE
switch in the correct position for
the process being used, typical-
ly “CV-WIRE” mode.
3. Check for poor weld cable con-
nections between the feeder
and the welder output terminal,
and between the work and the
other weld output terminal.
4. Check that the wire feederʼs
work sensing lead is properly
connected to the work piece,
and is in good condition.
5. The wire feeder may be defec-
tive.
1. Use a volt meter 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
aproblem with the mode switch.
Perform the CONTROL
POTENTIOMETER AND
MODE SWITCH RESISTANCE
TEST.
3. If there is no OCV, see the trou-
bleshooting section for “No
welding output in any mode”
CAUTION
Observe Safety Guidelines
detailed in the beginning of this manual. TROUBLESHOOTING GUIDE