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F-43

F-43

TROUBLESHOOTING & REPAIR

INPUT POWER AND WIRING HARNESS TEST

WARNING

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 elec- trical 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 1-800-833-9353 (WELD).

TEST DESCRIPTION

This test will determine if there are any short circuits or other problems on the input power circuit that would cause the input fuses to repeatedly blow.

MATERIALS NEEDED

Volt/Ohmmeter (Multimeter) 5/16" Nut driver

3/8" Nut driver

Input and Auxiliary Circuit Wiring Diagram – Figure F.14

This procedure takes approximately 20 minutes to perform.

POWER WAVE 450

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Lincoln Electric SVM112-B service manual Input Power and Wiring Harness Test, Test Description