Arc Machines 307 User Manual
Page 135
Arc Machines, Inc. Model 307 Orbital Tube Welder Training
Document No. 740096 Chapter 13. Page 2
Rev. A
For Automatic calibration to the power supply select Automatic. The
screen will indicate when the calibration is in progress and when the
calibration has been completed.
If the potentiometer is out of range the weld head will not calibrate, and the
307 will indicate “Calibration Failed.” Adjust the potentiometer CW to
increase speed or CCW to decrease speed. On the Model 8 Series weld heads
the calibration screw is on the bottom of the weld head handle.
CW
CCW
Typical Model 9 potentiometer location.