Hypertherm HT4001 Plasma Arc Cutting System - Manual (Page 101)

OPERATION
5-10
HT4001
Instruction Manual
15. Check the pilot arc operation by positioning the torch a minimum of 3 inches (75 mm) above the work.
16. Place the metal on the work table to make a test pierce. With manual starting, there is no machine motion.
Note: The cutting machine must retract the torch at least one inch (25.4 mm) from the work
before the start cycle, or probes may hit the workpiece when START button is depressed.
17. Set initial height to ON.
18. Depress the START button on your system. The probes will immediately descend and the torch will index
toward the work approximately 0.5 seconds later. The DOWN indicator light on the V/C control should be on.
When the torch nears the work, probes will inductively detect work surface and down motion will stop. The
DOWN indicator light on the V/C module will go off and the probes will retract.
At this point, set initial height to OFF and depress the STOP button. You are now ready for Final Torch
Adjustment.