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F-19TROUBLESHOOTING AND REPAIRF-19

INPUT RECTIFIER 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 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 test will help determine if the input rectifier has “shorted” or “open” diodes.

MATERIALS NEEDED

Analog Voltmeter/Ohmmeter (Multimeter)

5/16” Nut Driver

Phillips Head Screwdriver

Wiring Diagram

POWER WAVE 355M/405M

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Lincoln Electric 355M, 405M service manual 19TROUBLESHOOTING and REPAIRF-19, Input Rectifier Test