Identifying Issues:

1. Filament adheres to the nozzle.
2. The nozzle or hot end is wrapped in a large amount of filament.

 

Cause Analysis:

1. Long-term printing causes foreign matter to contaminate the outer wall of the nozzle, resulting in the continuous adhesion of extruded filament to the outer wall and causing accumulation.
2. Uneven hotbed, printing small models, or using special high-temperature materials such as ABS can cause the model to separate from the hotbed during printing, resulting in filament wrapping around the entire nozzle.
3. The nozzle was not properly locked with the hot end during installation/replacement, resulting in material leakage at the connection between the nozzle and the hot end.

 

Solution:

1. Turn on the M5 power switch, click Control > Move on the screen to lift the Z-axis of the nozzle assembly by 200mm, and move it to the middle of the X-axis (for easy replacement).

2. Use the H2.0 hex wrench to loosen the 4 bolts on the back of the nozzle assembly.

3. Remove the shell of the nozzle assembly. Use the H2.0 wrench to loosen the front bottom cover bolts and remove the bottom cover. Use the H2.0 wrench to loosen the two fixing bolts of the front fan bracket. (If the bottom cover is stuck or the fan bracket is difficult to remove, you can preheat the nozzle and remove the obstructive part first.)

4. Click Preheat > Start Preheating on the M5 screen, wait for the nozzle to preheat to 220℃, keep it warm for 10 minutes, and slowly clean the filament or wrapped filament on the nozzle with tweezers or pliers.

Tips:

• Pay attention to high-temperature parts to prevent burns.
• If the filament on the nozzle cannot be cleaned, preheat the nozzle to 240℃ (if printing high-temperature filaments such as ABS and TPU, increase the preheating temperature accordingly).
• Clean slowly to prevent breaking the connecting cable on the hot end.
• If the cable part on the hot end is difficult to remove, try removing the green air guide first and then use a heat gun to heat and remove it.

 

5. After cleaning, preheat the nozzle to 200℃ and use a 1.5 wrench to lock the two bolts of the heating block counterclockwise. Use the socket wrench provided in the toolbox to lock the nozzle.

 

6. If the thermistor wire breaks during cleaning, please replace the hot end. For specific guides, please refer to the following information.

Article: How-to-Replace-the-Hotend-of-M5

Video: How-to-Replace-the-Hotend-of-M5

 

If you have any further questions regarding how to prevent the filament from sticking to the nozzle, please contact AnkerMake customer support for assistance.