Perform the main contactor, Test, 175 vdc, perform the main contactor test – Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B User Manual

Page 163: Troubleshooting & repair, Main contactor test, Warning

MAIN CONTACTOR TEST

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 main input contactor CR1 and its associated wiring and compo-
nents are faulty or damaged.

MATERIALS NEEDED

Volt/Ohmmeter (Multimeter)
5/16" Nut driver
3/8" Nut driver
Slot head screw driver
Input and Reconnect Wiring Diagram – Figure F.36

WARNING

TROUBLESHOOTING & REPAIR

F-103

POWER WAVE 450