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OUTPUT PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
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.
CAUTION
No welding output in either Stick or
CV modes. Also no auxiliary power.
The engine operates normally.
1. Check the brushes for wear and
proper contact to the rotor slip
rings.
2. Make sure the engine is operat-
ing at the correct high idle speed
(1900RPM).
3. Check for loose or faulty con-
nections or leads on the auxil-
iary power studs in the control
box. See the Wiring Diagram.
1. Perform the Rotor Resistance
Test.
2. Perform the Flashing and
Rotor Voltage Test. If the
"flashing" voltage is not pre-
sent the leads 6,5H,200B,
#201 or #200 may be faulty.
See the Wiring Diagram. Also
make sure that lead #5P has
continuity (zero ohms) to
ground.
3. Check the field diode bridge
and capacitor. Replace if nec-
essary.
4. Perform the Stator Voltage
Test.
No auxiliary power at the recepta-
cles. The welding output is normal
and the engine operates normally.
1. The circuit breakers may be
tripped. Reset if necessary.
2. Check for loose or faulty con-
nections at the auxiliary recepta-
cles.
1. Check the wiring between the
auxiliary receptacles, the con-
nection studs in the control box,
and the main stator. See the
Wiring Diagram.
2. Perform the Stator Voltage
Test.
3. Check GFCI receptacles.
NOTE: The machine must be at
high idle to reset the GFCI
receptacles
TROUBLESHOOTING AND REPAIR
F-5 F-5
VANTAGE® 500
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