Clean the feeder

The feeder forwards filament to the print head. To make sure that exactly the right amount of material is extruded, it is important that the feeder gears are able to turn smoothly.

After many hours of printing, or when material has been ground down by the gears, there is a chance that there are small filament particles in the feeder. In addition to blowing out the particles once a month, it is recommended to clean the inside of the feeder after one year of printing. In order to do this, the feeder has to be removed from the printer.

Note: It is also recommended to replace the Bowden tube after one year. While cleaning the feeder, follow the instructions for replacing the Bowden tube simultaneously.

1. Remove the filament

  • On the Ultimaker 2+, navigate to "Material > Change".
  • Remove the filament and turn off the printer.

Change material

2. Remove the Bowden tube

  • Remove the clamp clip from the end of the Bowden tube that goes into the feeder.
  • Press down on the tube coupling collet and pull the Bowden tube upwards out of the feeder.

Insert Bowden tube feeder

3. Loosen the feeder

  • First reduce the tension of the feeder by turning the bolt at the top of the feeder, until the indicator is at the highest mark.
  • Use a hex screwdriver to loosen the two bolts that hold the feeder to the back panel.
  • Slide the feeder backward away from the printer.

Loosen feeder tension
Loosen feeder

4. Open the feeder

  • Remove the four bolts that hold the housing parts together.
  • Place the two halves in front of you, making sure that all parts are in the back section of the feeder.

04.1_Open-feeder-housing
Two feeder halves

5. Clean the feeder

  • Use a clean cloth or a cotton swab to wipe all filament particles away from the feeder parts.
  • Use a paintbrush or an old toothbrush to clean the knurled wheel.
  • Also clean the small gear attached to the feeder motor.

Clean knurled wheel
Clean feeder gear

6. Reassemble the feeder

  • Place the front section over the back section of the feeder, making sure that all parts are still in place.
  • Insert the four bolts and tighten them in a cross pattern, starting in the top-left corner.

Tighten bolts feeder housing

7. Lubricate the gear

  • Apply a small amount of Magnalube to the gear attached to the feeder motor.
  • There is no need to spread this out; the feeder will do this automatically when it turns.

Lubricate feeder gear

8. Place the feeder back

  • Insert the two bolts into the feeder housing and align it with the holes in the back panel.
  • Tighten the bolts to make sure that the feeder is attached securely.
  • Reset the tension of the feeder by turning the bolt in the top of the feeder housing, until the indicator is at the middle mark.

Place feeder back

9. Insert Bowden tube

  • Press down on the tube coupling collet in the feeder.
  • Push the Bowden tube all the way in.
  • Make sure that the braided sleeve goes behind the Bowden tube, from left to right.
  • Secure the tube with the clamp clip.

Insert Bowden tube feeder

10. Reset feeder tension

  • Reset the tension of the feeder by turning the bolt in the top of the feeder housing, until the indicator is at the middle mark.

Set feeder tension
Index
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