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Service and repair should be performed by only Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician
or machine operator and will invalidate your factory warranty. For your safety and to avoid
electrical shock, please observe all safety notes and precautions detailed throughout this
manual.
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 trou-
bleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This procedure will determine if the shunt field coils are receiving the necessary power to
operate correctly.
This test should be done if there is little or no output from the welding generator, but aux-
iliary output is normal.
MATERIALS NEEDED
Miscellaneous hand tools
Volt meter or Multimeter
Wiring diagram
SHUNT FIELD CIRCUIT VOLTAGE TEST
TROUBLESHOOTING AND REPAIR
F-51 F-51
SAE-400 SEVERE DUTY
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WARNING