The front fan cools the print cores during a print. This helps to prevent the heat from the nozzle traveling too far upwards.
The fan takes in air from the front of the print head and directs it towards the print cores. Sometimes the airflow causes thin strands of filament to be sucked into the fan during a print. If strands accumulate in the fan, they can obstruct the fan and prevent it from spinning.
To check the front fan, first gently open the front fan bracket. Blow into the front fan to see if it spins smoothly. If it does not move at all, or stops spinning abruptly, carefully clear any obstructions from the front fan with some tweezers.
⚠Caution: Make sure that the print cores are completely cooled and the printer is turned off before performing this check.
If the fan is still not spinning after removing visible filament residue, it should be replaced.
Ultimaker 3 Maintenance Kit
- Clean the printer
- Lubricate the axles
- Check for play on axles
- Check the tension of the short belts
- Check for residue in the front fan of the print head
- Check the quality of the silicone cover
- Lubricate the lead screw of the Z motor
- How to use cleaning filament
- Clean the feeders
- Replace the Bowden tubes
- Advanced 3D Printing Kit for Ultimaker 3
Ultimaker 2+ Maintenance Kit
- Installing the Extrusion Upgrade kit
- Removing the cable cover
- Loosening the electronics
- Disconnecting the cables
- Replacing the feeder
- Replacing the build plate clamps
- Removing the print head
- Installing the new print head
- The bowden tube
- Guiding the cables
- Connecting the cables
- Attaching the main board
- Attaching the cable cover
- Aligning the axles
- Firmware and bed leveling
- Completing the upgrade
- Extrusion upgrade
- Advanced 3D Printing Kit for Ultimaker 2+
- Olsson block upgrade
Dual Extrusion kit
- Print head