The extruder assembly is located inside the print head and consists of the plastic extruder assembly, sheet metal parts, and the extruder motor.
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¶ 1. Tools:
S2.5 Allen Key
Flathead Screwdriver
¶ 2. Filament Retraction:
¶ Step 1: Raise the Z-Axis
Connect the power supply.
① In the main menu, rotate the knob counterclockwise to the indicated position and press the knob to enter the next menu.
② In the settings menu, rotate the knob clockwise to the indicated position and press the knob to enter the next menu.
③ In the axis movement menu, rotate the knob clockwise to the indicated position and press the knob to enter the next menu.
④ Rotate the knob clockwise to adjust the value to "120mm" to raise the Z-axis to the middle position.
¶ Step 2: Heat the Nozzle
Return to the settings menu, rotate the knob to the "Filament" option, and press the knob to enter the next menu.
In the filament change menu, rotate the knob to the "Extrude" option and press the knob to start the heating process.
The nozzle will automatically heat up to 215°C and begin extrusion. Press the knob to "Stop and Return" when finished.
¶ Step 3: Remove the Filament
Once the nozzle has reached the target temperature, press the handle on the extruder to push the filament forward slightly.
Quickly retract and remove the filament. Follow the sequence in the image provided.
¶ 3. Disassembly Steps:
¶ Step 1: Power Off the Device
Before replacing the extruder assembly, ensure that the device is powered off, disconnected, and wait for the print head temperature to cool to room temperature for safety.
¶ Step 2: Remove Print Head and Extruder Cables
① Use a flathead screwdriver to gently pry open the fixed cable clamps on both sides of the print head module.
② Slightly rotate the valve on the adapter board, then disconnect the print head cable and extruder motor cable.
¶ Step 3: Remove PTFE Tube
① Remove the clamp fixing the quick connector for the extruder.
② Depress the extruder quick connector and pull out the PTFE tube.
¶ Step 4: Remove Print Head
Use an S2.5 Allen Key to remove the 4 screws securing the print head.
¶ Step 5: Remove Extruder Assembly
① Use an S2.5 Allen Key to remove the 2 screws securing the print head's outer shell. When removing the print head's outer shell,
take out the FAN0 fan cable from the cable slot before unplugging it.
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② Use an S2.5 Allen Key to remove the 2 screws securing the ground wire of the extruder motor for future installation.
(1 screw at the print head adapter board and 1 at the extruder motor)
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③ Use an S2.5 Allen Key to remove the 1 screw each that secures the print head adapter board and the heating block. Take the switch cable close to the switch out of the cable slot, then remove the print head adapter board and heating block. (Note: The cables on the print head adapter board are still connected to the heating block, so remove them together.)
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¶ 4. Installation Steps:
¶ Step 1: Install Extruder Assembly
① Take out the new extruder assembly, the previously disassembled print head adapter board and heating block assembly, and the fixing screws. Assemble the new extruder assembly and the disassembled print head adapter board and heating block assembly. Then, insert the cables into the cable slot and use an S2.5 Allen Key to tighten the 2 fixing screws.
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② Use an S2.5 Allen Key to tighten the screw against the print head adapter board according to the hole position.
