How to clean the cooler fan (BCN3D Sigmax)


Allen Key 2.5mm


The cooler fan is the fan in charge of keeping the hotend area prior to the heater block cold to prevent the filament from melting before reaching the nozzle and clogging the hotend. Keeping the fan clean is vital to maintain the life of the fan and ensure good cooling of the hotend.


To clean the fan, do the following:

1. Turn off and unplug the printer

sigmax-turn-off-1 sigmax-turn-off-2

2. Using the pliers, remove any visible filament remain from the fan.


3. If the fan has dust you can use a vacuum cleaner or compressed air to remove it.

4. Remove the hotend and clean the fan from the other side. screw-iconx2 M3 8mm




It is recommended to clean the cooler fans every 300 printing hours.

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It's important to keep your printer in good shape to make the most out of it. In this chart, you can find a list of the extruder maintenance procedures and how frequently these should be done. Maintenance Plan


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