¶ 1. Retract Filament
Click "Prepare" - "Filament" - "Retract", wait for the nozzle to heat, the machine will automatically unload filament.
Hold down the extruder and pull out the filament.
Click "Cooling" and wait until the temperature drops to normal temperature.
Turn it off.
¶ 2. Remove
Use a hex key to remove the four screws on the hotend cover, and remove the hotend cover and motor protection cover.
Remove the three cables.
Unscrew the three screws fixing the extruder parts.
Take out the extruder and pull out the Teflon tube.
¶ 3. Clean the pipe
Startup the printer and set the nozzle temperature to 240°C.
Use the needle to clean the blocked filament in the pipe.
If the needle does not go through directly, perform the following operations:
Heat the tip of the needle by using a heating tool.
Insert the hot needle into the pipe, wait for 30 seconds, and wait for the needle to be cooling.
Slowly pull out the needle after cooling to take out the clogged filament in the pipe.
Cool, wait until the nozzle temperature drops to normal temperature.
¶ 4. Restore the extruder
Shut down the printer and restore the extruder.