Tools:
① 2 mm hex wrench
② 2.5 mm hex wrench
When you are ready to unload filament, make sure that you have completed your printing task.
1. Select the “Utilities” tab on the touchscreen.
Figure 1 Enter the “Utilities” tab.
2. Set the temperature of the nozzle to a sufficient unloading temperature. For example, the Raise3D PLA default loading temperature is 215°C. In this guide’s example, we will demonstrate how to unload filament from the right nozzle. Let’s set the right nozzle temperature to 215°C.
Figure 2 Set the temperature of the right nozzle to an appropriate unloading temperature.
3. Select "Unload", and the corresponding nozzle will start heating. When the nozzle reaches the target temperature, select "Unload". The extruder will pre-extrude the filament and then start to withdraw the filament.
Figure 3 Unload the filament.
4. Firmly depress the quick connector ring, and extract the filament guide tube.
Figure 4 Depress the quick connector ring to remove the filament guide tube.
5. Gently assist in removing the filament from the extruder. After the filament is completely removed from the extruder, select "OK" on the touchscreen to end the unloading cycle.
Figure 5 Gently assist in removing the filament from the extruder.
Position the printhead to a location where it can be easily accessed.
1. Select the “Utilities” tab on the touchscreen.
Figure 6 Select the “Utilities” tab on the touchscreen.
2. Select the “Stepper Motor Unlock” graphic located at the upper-left corner of the touchscreen.
Figure 7 Select the “Unlock” icon.
3. Carefully position the printhead to a location where it can be easily accessed.
Figure 8 Position the printhead to a location where it can be easily accessed.
1. Select the “Utilities” tab on the touchscreen.
Figure 9 Enter the “Utilities” tab.
2. Select the “Left” L-nozzle icon to switch the selected nozzle to the left nozzle, and the right-side extruder should move to the upper position, which is ideal for removal and installation to avoid misalignment.
Figure 10 Switch the active nozzle to the L-nozzle on the touchscreen.
3. Verification: Use the nozzle selector to toggle between the left nozzle and right nozzle to visually confirm that the right-side extruder is changing positions, but make sure that the right-side extruder is placed in the upper position before continuing with this guide.
1. Turn off the power using the rocker switch, at the rear of the machine, and disconnect the printer’s power cable from the outlet.
Figure 11 Turn off the printer and disconnect from outlet.
1）On the right interchangeable hot end, release the red buckle and hold the handle on the front of the interchangeable hot end to remove it from the printer. For details, see How to Install and Disassemble Interchangeable Hot End.
Figure 12 Release the red buckle and remove the interchangeable hot end from the printer.
2）Use the 2 mm hex wrench to remove the 6 screws marked in red circles, and the 2.5 mm hex wrench to remove the screw marked in a green circle. With these screws removed, the back cover can be removed from the printhead.
Figure 13 Remove the back cover from the printhead.
Figure 14 Remove the back cover.
3）Locate the position of the right extruder motor cable and carefully disconnect the cable by depressing the buckle on the connector plug.
Figure 15 Disconnect the right extruder motor cable by depressing the buckle.
4）Locate the position of the right hot end connecting cable, depress the latch, and carefully disconnect the hot end connecting cable.
Figure 16 Locate the right hot end cable, depress the latch, and disconnect the cable.
5）Remove the 3 screws on the side of the right extruder using a 2.5 mm hex wrench. The 3 screws are indicated by the red circles in the image below.
Figure 17 Remove the 3 screws on the side of the right extruder using a 2.5 mm hex wrench.
6）With the 3 screws removed, carefully lift out the right extruder from the printhead.
After removing the right extruder, note the small bearing circled in the picture below.
Figure 18 Remove the 3 screws and lift out the right extruder.
1. Install the replacement extruder on the printhead.
1）Install the replacement right extruder, align the small bearing with the slot, and securely mount the extruder to the printhead.
Note: Pass the right extruder cable through the empty slot on the device, and the hot end connecting cable through the empty slot on the device below.
When mounting the extruder to the printhead, it may be necessary to apply a slight compression onto the spring-loaded component to successfully aligning the small bearing to seat within the slotted pathway.
Figure 19 Align the right extruder to the slot and securely install the extruder.
2）Fasten the 3 screws on the side of the right extruder using a 2.5 mm hex wrench.
Figure 20 Fasten the 3 screws on the side of the right extruder using a 2.5 mm hex wrench.
3）Locate the hot end connecting cable and reconnect it to the board.
Figure 21 Locate the hot end connecting cable and reconnect it to the board.
4）Locate the right extruder cable socket, and reconnect the right extruder cable to the board.
Figure 22 Connect the right extruder cable to the board.
5）Carefully align and mount the rear cover to the printhead and fasten the 7 screws to secure it. Use the 2 mm hex wrench to return the 6 screws marked in red circles, and the 2.5mm hex wrench to return the screw marked in a green circle (shown in Figure 24).
Important: Avoid damaging the flat cable when positioning the rear cover and affixing the screws.
Figure 23 Position the back cover.
Figure 24 Affix the 7 screws to secure the back cover.
6）Install the right interchangeable hot end. With the red buckle raised, hold the handle on the front of the interchangeable hot end to install it on the printer. For details, see How to Install and Disassemble Interchangeable Hot End.
Figure 25 Raise the buckle and hold the handle on the front of the interchangeable hot end to install it on the printer.
1. Plug the power cord into a grounded outlet, and use the rocker switch to power on the machine.
2. Verify that the printhead operates normally by loading filament.
1）Select the “Utilities” tab on the touchscreen.
Figure 26 Enter the “Utilities” tab.
2）Set the temperature of the right nozzle to a suitable loading temperature. For example, the Raise3D PLA default loading temperature is 215°C. Set the right nozzle temperature to 215°C.
Note: The recommended loading temperature for other filaments is typically 5-10°C higher than their usual printing temperature.
Figure 27 Set the temperature of the R-Nozzle to a suitable loading temperature.
3）Select the “Load” button and the nozzler will begin to heat. When it reaches the target temperature, select "Load".
Figure 28 Load the filament.
4）The extruder feeding gear will start to rotate. Gently guide the filament into the extruder. When the filament extrudes from the nozzle, press "OK" to complete the loading cycle.
Figure 29 Gently guide the filament into the extruder.
5）Confirm that the filament is extruding consistently, and then insert the guide tube back into the quick connector.
Figure 30 Insert the guide tube back into the quick connector.
1）Please select the gearwheel icon to open “Setting >Maintenance > Offset Calibration” to enter the “Offset Calibration” screen.
Figure 31 Begin the Offset Calibration process.
