Perform the input contactor, Test, Input contactor test – Lincoln Electric MULTI-SOURCE SVM155-A User Manual
Page 41: Troubleshooting & repair, Test description, Materials needed, Warning
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INPUT CONTACTOR TEST
TROUBLESHOOTING & REPAIR
MULTI-SOURCE
WARNING
Service and repair should be performed only by Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment could result in danger to the technician or the
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
tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting
assistance before you proceed. Call (800) 833-9353 (WELD).
TEST DESCRIPTION
This test will determine if the input contactor is receiving the correct coil voltage and if the
contacts are functioning correctly.
MATERIALS NEEDED
Ammeter
MULTI-SOURCE wiring diagrams (See Electrical Diagram Section of Manual).
3/8” Nut Driver
External 120VAC supply
This procedure takes approximately 30 minutes to perform.