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Observe Safety Guidelines detailed in the beginning of this manual.
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
TROUBLESHOOTING & REPAIR
F-4 F-4
VANTAGE® 400
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
Major mechanical or electrical
damage is evident.
1. Contact your local Lincoln
Authorized Field Service
Facility.
1. Contact the Lincoln Electric
Service Department at 1-888-
935-3877.
No welding output or auxiliary
power. The engine operates nor-
mally.
Check for loose or faulty connec-
tions in the auxiliary circuit to the
output receptacles, and/or the
weld circuit to the output terminals.
SEE WIRING DIAGRAM.
Check the brushes for wear ad
proper contact to the rotor slip
rings.
Check the brushes for wear and
proper contact to the rotor slip
rings
Perform the Brush and Slip Ring
Service Procedure.
Check for flashing voltage at slip
rings (3-5 Volts DC@.5 amp until
generator builds up, then 160
Volts) See FLASHING VOLTAGE
TEST.
Check Field rectifier and capacitor.
Perform the Rotor Voltage Test.
Perform the Stator Voltage Test.
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