Hypertherm Phoenix 8.0 - Manual (Page 293)

Cut Operations
286
The Preheat times, Total, Completed and Remaining, are shown to a tenth of a second.
When you activate the Cut Sense input, the Preheat delay time cycle ends. The time at
the point of activation becomes the new Preheat time for subsequent cuts. Three soft
keys are also displayed which can be used to modify the Preheat cycle in progress.
Press the Start key twice to bypass the Preheat and Pierce Time Delays and begin the cut
in the Oxy Fuel cut mode.
The function of these keys is explained below:
Extend
Extends the Preheat timer until it is stopped with either the Set-Now or Release soft key.
Set Now
Ends the selected delay timer and saves the new set time. Use the Set Now soft key with
the Extend soft key to modify the preset Preheat time.
Release
Ends the selected delay timer, but does not modify the original delay time.