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Maintenance
8.12
Check if print head fan is running after heating up
The small fan on the print head cools the print head 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 metal
cooling ribs of the print head. 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 decrease the effective cooling and eventually obstruct
the fan and prevent it from spinning.
If you heat up the print head above 50 degrees Celsius the fan should start spinning. If it’s not spinning, please
don’t heat up the print head anymore and let it cool down. See if there are any obstructions in the fan. If there are
any, remove them with some tweezers.
If the fan is still not spinning and there is no obstruction found, the fan should be replaced. Contact our support
desk for more information.
8.13
Clean or replace the feeder/extruder motor
The feeder leads the filament to the print head. To ensure that the exact right amount of filament is extruded, the
feeder gear needs to turn turn smoothly.
Small filament particles might remain in the feeder after many hours of printing. We recommended to clean the
inside of the feeder after three months of use.
The following steps need to be performed
Heat up the print head and unload filament
(see chapter 7.2 Unload Filament)
After filament is unloaded let the print head cool down. Never turn off the printer with a print head above 50
degrees Celsius!
Lower the print head by moving the printer to the maintenance location.
