¶ Internal Nozzle Fans
There are three fans inside the nozzle:
- Extruder motor fan.
- Heat break fan: Controlled by nozzle heating and temperature. The heat break fan turns on when the nozzle starts heating or temperature exceeds 50°C, otherwise it stays off.
- Model fan: The model cooling fan on the extruder, controlled by Gcode/screen.
|
|
¶ Side Fan
One large fan on the side of the machine chamber, controlled by Gcode/screen.
¶ Chamber Fans
- Back fan is on the machine back panel (chassis fan/cooling fan), controlled by Gcode/screen.
- The cooling fan (exhaust fan) switch is linked to the chamber temperature. As shown in Figure 4, when printing with filament, the cooling fan (chassis fan) will operate at full speed when the chamber temperature reaches 35°C (without manual operation).
- The filter fan operates at full power regardless of filament type when printing starts. It turns off when printing completes. During print pause, it remains fully open.
- The power board fan operates at full power during printing regardless of filament status. It turns off when printing is complete. During print pause, it remains at full power.
- The chamber heater fan is linked with heating, controlled by M141 command. When the command is above 40°C, it runs at full speed; when below 40°C, it turns off.
When M141 command is below 40℃, it's mainly for printing PLA materials. To prevent nozzle clogging at low chamber temperature, the chamber heating is turned off, and the chamber temperature is controlled only by the hot bed heat and exhaust fan.
When M141 command is above 40℃, it's mainly for printing engineering materials that require higher chamber temperature. For heat preservation, the exhaust fan cannot be turned on, and the chamber temperature is controlled by the chamber heating fan.
|
|
¶ Fan does not work/Fan with abnormal noise
Phenomenon Description：Fan does not work/Fan with abnormal noise.
Cause Analysis:
- Loose fan connection/damaged wiring
- Foreign objects in fan cover, broken fan blades
- Loose fan mounting screws, wire interference
Troubleshooting：
- Check if there are foreign objects in the fan, if present, clean the fan.
- Check if fan mounting screws are loose, if loose, retighten the screws.
- Check if fan is broken or wires are interfering, contact customer service if these issues exist.
- For nozzle adapter board fan troubleshooting, swap the connections of heat break fan and model fan at adapter board end to determine if it's a fan issue or adapter board failure.
- Use multimeter to measure fan terminal voltage at mainboard & adapter board ports, normal voltage should be around 24V. If abnormal, contact customer service for further analysis.
¶ Fan Cleaning and Maintenance
Regularly inspect model fan, heat break fan, side fan, cooling fan, filter fan, and chamber heating fan for dust and debris. Clean promptly to ensure normal operation.
¶ When to Maintain
Check for dust and debris once per week.
¶ How to Maintain
Maintain while printer is powered off, use tools to clean dust and debris.