Dead Short, 1St Step And Open Reactor Tests - Lincoln Electric GENUINE SAE-300 Service Manual

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DEAD SHORT, 1ST STEP AND OPEN REACTOR TESTS

Service and repair should be performed only by 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 Coarse 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
Ohmmeter
Resistive Load Bank
A Short Length Of Heavy Cable To Short The Output, Or Load Bank With Shorting
Contactor
TROUBLESHOOTING AND REPAIR
WARNING
SAE-300 ®
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