Lincoln Electric RANGER 225 GXT Service Manual page 54

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Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The welding arc is "cold".
Engine runs normally (3700 RPM
with no load). Auxiliary power is
functioning normally.
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.
TROUBLESHOOTING AND REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Check for loose or faulty
connections at the weld output
terminals and welding cable
connections.
2. The welding cable may be too
long or coiled, causing an
excessive voltage drop.
CAUTION
RANGER® 225 GXT
RECOMMENDED
COURSE OF ACTION
1. Check for correct open circuit
voltage (OCV) at the welder
output terminals (80VAC
Max., 72VDC Max.). If the
correct voltage is present at
the output terminals, then
check for loose connections
on the heavy current carrying
leads inside the RANGER® 8.
See Wiring Diagram.
2. If the OCV is low at the
welder output terminals, then
perform the Engine Throttle
Adjustment Test.
3. Perform the Output Rectifier
Bridge Test.
4. Check for shorted or
grounded windings in the
reactor and also in the main
stator. See Wiring Diagram.
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