Calibration - Thermal Arc Fabricator 211i Service Manual

FABRICATOR 211i

5.12 Calibration

1 Calibration
Set SW0 position 1 to ON while the power source is turned off, to allow calibration of output volts & amps.
2 Output Current Calibration
Select STICK mode on the front panel.
Measure no load output welding voltage and adjust WVF potentiometer so Volts display reads within 0.2V of the
measured value.
Connect a load to the output terminals. The load should be of a resistance to give 25V at 250A.
Set front panel AMPS potentiometer to minimum.
Adjust Imin trimpot until output amps is 10A +/- 0.2A
Set front panel AMPS potentiometer to maximum.
Adjust Imax trimpot until output amps is 200A +/- 1A
Recheck settings
Set front panel AMPS potentiometer to maximum.
Adjust A potentiometer so Amps display reads within 0.5A of the measured value.
3 Output Voltage Calibration
Select MIG mode on the front panel.
Remove the load from the output terminals.
Set front panel VOLTS potentiometer to minimum.
Adjust Vmin trimpot until output volts is 14.0V +/- 0.2V
Set front panel VOLTS potentiometer to maximum.
Adjust W2 trimpot until output volts is 26V +/- 0.2V
Recheck settings
TROUBLESHOOTING 5-18
TROUBLESHOOTING
Art # A-10757_AB
Manual 0-5158