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F-10

F-10

TROUBLESHOOTING & REPAIR

INPUT CONTACTOR TEST

(FOR MODELS EQUIPPED WITH AC COIL ON INPUT CONTACTOR)

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 216-383-2531 or 1-800-833-9353 (WELD).

DESCRIPTION

This test will help determine if the input contactor is receiving the correct AC coil voltage and if the contacts are functioning correctly.

MATERIALS NEEDED

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

IDEALARC R3R Wiring Diagrams (See the Electrical Diagrams section of this manual.) External 120VAC supply

This procedure takes approximately 20 minutes to perform.

IDEALARC R3R

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Lincoln Electric R3R-300, R3R-500 service manual Description, Materials Needed