How to manually Unload Filament on an Ender 3 Pro

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Setting the nozzle temperature

Press the knob to enter the marlin LCD menu and turn it to navigate between the options.
Navigate to Temperature > Nozzle.
Adjust the nozzle temperature by turning the knob and confirm by pressing it.
Use whatever temperature you would be printing with, minus about 10°C. For both PLA and PETG 210°C usually works fine.

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