Tach Feedback Test - Lincoln Electric POWER FEED 84 Service Manual

POWER FEED 84, POWER FEED 84 DUAL
Service and repair should be performed only by 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 troubleshooting assistance before you proceed.
Call 1-888-935-3877.
TEST DESCRIPTION
This test will determine if the Tach Unit is receiving the correct supply voltage from the Control Board and also if
the Tach Unit is sending feedback information to the Control Board.
MATERIALS NEEDED
Volt/Ohmmeter
Wiring Diagram

TACH FEEDBACK TEST

WARNING
F-17
TROUBLESHOOTING AND REPAIR