Heating Block: Contains the built-in heating tube and thermistor.
PTFE Tube: Guides the filament to the nozzle.
Nozzle: Extrudes the heated filament for printing.
Functions
The hotend's primary function is to control the temperature and heat the filament for printing.
Errors / Issues
Hotend blockage
Heating function failure
Temperature display abnormality
Method of Replacement
Tools Required
2.0 hex wrench
1.5 hex wrench
Side cutters
Pliers
Steps
Preheat the Nozzle (if heating is functional)
Turn on the M5 switch and preheat the nozzle to 180°C. If the heating function fails, skip this step and directly pull out the PTFE tube and cut the filament with side cutters.
Unload Filament
Click Control > Extrude > Retract on the right shoulder screen to pull the filament out from the left shoulder. If there is resistance, press and hold the extrusion clip on the nozzle assembly while pulling out the filament.
Position the Nozzle Assembly for Replacement
On the screen, click Control > Move to raise the Z axis of the nozzle assembly by 200mm and move it to the middle of the X axis for easy access. Turn off the power and wait for the hotend to cool down.
Remove Nozzle Assembly Cover
Use a 2.0 hex wrench to loosen the 4 bolts on the back of the nozzle assembly (for V2-compatible machines).
Remove the Top and Bottom Covers
Move the top cover and nozzle cover up with the Type-C cable and secure them.
Use a 2.0 hex wrench to loosen the front bottom cover bolt and remove the bottom cover.
Remove the Cooling Fan Section
Use a 2.0 hex wrench to loosen the two screws on the front cooling fan section. Disconnect the left and right cooling fan wires and remove the cooling fan section.
Remove the Heating Block
Turn on the power and preheat the nozzle to 180°C. Remove the insulation sleeve from the heating block. Use a 1.5 hex wrench to loosen the 2 screws of the heating block. Hold the heating block pliers and unscrew the screws. Ensure you do not burn yourself.
Unplug Thermistor and Heating Tube
Turn off the power and allow the hotend to cool to room temperature. Unplug the thermistor wire and heating tube, then remove the hotend (excluding the heat dissipation block).
Install the New Hotend
Insert the new hotend vertically into the heat dissipation block. Use a 1.5 hex wrench to tighten the two fixed bolts. Ensure the heating tube and thermistor are on the right side of the device.
Reconnect Components
Plug in the thermistor wire and heating tube, and put on the insulation sleeve.
Use a 2.0 hex wrench to secure the cooling fan block and insert the fan power cord.
Secure the bottom cover with a 2.0 hex wrench.
Use a 2.0 hex wrench to tighten the four fixing bolts on the back to secure the housing.
Reload Filament
Insert the filament at the left shoulder until it reaches the extruder. If there is a blockage, press and hold the extrusion clip and insert the filament again until it encounters resistance.
Test Extrusion
Turn on the power switch of the device. Click Control > Extrude > Extrude Once the temperature is reached, check the extrusion of the filament to ensure it is continuous and uniform.
If the above steps do not resolve the issue, please contact us at us for further assistance.
