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F-75

F-75

TROUBLESHOOTING & REPAIR

SNUBBER AND BLEEDER RESISTOR 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 the eight snubber resistors and two bleeder resistors are of the proper value and their associated leads intact.

MATERIALS NEEDED

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

3/8" Nut driver

Snubber and Bleeder Resistor Wiring Diagram – Figure F.25

This procedure takes approximately 30 minutes to perform.

POWER WAVE 450

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Lincoln Electric SVM112-B service manual Snubber and Bleeder Resistor Test, Test Description