on the LCD display, you can access the menu 'Settings' and sub menu 'temperature' and the sub option Nozzle. where you can select the temperature that you want.
this can be used to preheat the nozzle before a print, or to change the temperature of the nozzle during a print!
I hope this helps you,
I try to make suggestions that I believe to be well founded and safe,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions,
what you do, is YOUR responsibility.