How to set the preheat time for SteelTailor flame cutting?

First you set a big value, such as 100, the unit is second.
After you load the program, you ignite the torch, then move the torch to the proper position, then press START key, the preheat will start, if when the time is 10s and you think it is enough for preheating, you press the START button again, this time the cutting oxygen will be open and the cutting begin, then the machine will adjust the HOTUP time to 10s automatically, if when you prepare to pierce another point, when it is preheating, you can press the STOP button to extend the preheat time, when it is enough press START again.

Thank you for your attention of SteelTailor portable CNC cutting machine.