¶ Thermistor and Ceramic Heating Element Replacement
Tools and materials needed
●2.5mm Allen wrench
●2.0mm Allen wrench
●Ceramic heating element
●Thermistor
Reference video
Precautions before operation and machine status
This operation involves the replacement of some print head components. Before performing these operations, please turn off the machine and wait for the print head to cool down completely.
Operation steps
1-Remove the print head
1. Power off the printer, unplug the port cable of the fan assembly located directly behind the print head, use a 2.5mm Allen wrench to loosen the four fixing screws of the "rear fan assembly", and remove the rear fan assembly.
2. Use a 2.0mm Allen wrench to loosen the two fixing screws of the "cable fastener" and the one fixing screw of the whole print head assembly.
3. Press the "horn terminal" on both sides with your hands, the print head cable will pop up automatically, and then remove the print head cable.
4. Use a 2.0mm Allen wrench to loosen the two fixing screws of the "print head front cover" and remove the whole print head assembly.
2-Replace the thermistor and ceramic heating element
1. Separate the front cover of the whole print head assembly, and unplug the "ceramic heating element" and "thermistor" cables from the extrusion adapter board.
2. Remove the black "silicone sleeve" wrapped on the heated chamber, and remove the heating element snap ring. Do not use too much force to avoid damage to the ceramic heating element.
3. Remove the ceramic heating element and thermistor, and place the new ceramic heating element and thermistor in the mounting position.
4. Install the heating element snap ring and the black "silicone sleeve" wrapped on the heated chamber.
5. Insert the cable port of the thermistor into the "TH" port of the extrusion adapter board, and insert the cable port of the ceramic heating element into the "HE" port of the extrusion adapter board (pay attention to combing the cables).
3-Install the print head
1. Install the front cover of the whole print head assembly (It has a groove design and can be installed by sliding it in).
2. Place the whole print head assembly in the mounting position in front of the print head, and use a 2.0mm Allen wrench to tighten the two fixing screws of the "print head front cover".
3. Press the "horn self-locking terminal" to both sides with your hands to open the port, and then insert the print head cable into the port (note that the cable passes under the top profile).
4. Use a 2.0mm Allen wrench to tighten the two fixing screws of the "cable fastener" and the one fixing screw of the print head.
5. Take out the fan assembly, align it with the screw holes mounting position, use a 2.5mm Allen wrench to tighten the four fixing screws of the rear fan assembly (install with the air outlet facing downward), and insert it into the fan assembly cable port.
6. Power on the printer, click [Prepare-Temperature] on the touch screen, and then set the nozzle temperature to 210°C in the temperature control interface.
7. Press the extruder handle to feed the filament into the extruder. Click "Extruder" on the touch screen. After setting the length of the extruded filament, click "Load".
8. After observing that the nozzle extrudes the filament normally, the printer can be used normally after re-leveling it.
