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QUICK VOLTAGE CALIBRATION
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).
PROCEDURE DESCRIPTION
This procedure is a quick way of calibrating the voltage sensing points (leads), provided that
the existing display board is capable of displaying the calibration numbers that are stored in
the display board.
MATERIALS NEEDED
A known “good” replacement display board
A Test and Calibration overlay L9660-255
WARNING
TROUBLESHOOTING & REPAIR
F-143 F-143
POWER WAVE 450
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This procedure takes approximately 15 minutes to perform.