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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 tests the operation of the Output Control Unit (Variable Reactor) and the
Series Field Coils in the welding generator.
This procedure should be done if the low end weld output too low, too high, or varies
abnormally, and the auxiliary output is normal.
MATERIALS NEEDED
Miscellaneous Hand tools
Ohm Meter
Resistive load Bank
A short length of heavy cable to short the output, or load bank with shorting contactor
DEAD SHORT, 1ST STEP, AND OPEN REACTOR TESTS
TROUBLESHOOTING AND REPAIR
F-53 F-53
SAE-400 SEVERE DUTY
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WARNING