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1. Cleaning the glass plate
2. Feeder motor
3. Lubrication
4. Nozzle cleaning method
Cleaning the glass plate
After multiple prints, there may be a lot of residual adhesive adhering to the glass plate, causing an uneven surface that affects print quality. Therefore, regular cleaning of the glass plate is recommended. Before cleaning, please turn off the machine and ensure the glass plate has cooled down.
Removing the glass plate
1. Manually lower the print platform to the very bottom of the machine. This step is to prevent damage to the nozzle and the Z-axis lead screw supporting the platform.
2. Use an Allen wrench to open the two small clamps at the front of the print platform.
3. Slide the glass plate out from the two small clamps at the back of the print platform and then remove it.
Cleaning and re-inserting
When cleaning, it is recommended to rinse with warm water and brush off any residual adhesive. If necessary, you can also wash with soapy water. Wipe the glass plate dry before re-inserting.
The steps to re-insert the glass plate are the reverse of removing it:
1. Slide the glass plate into the two small clamps at the back of the platform and secure it.
2. Close the small clamps at the front of the platform and secure them.
TIPS! To ensure future print quality and success rate, it is recommended to perform a print platform leveling calibration after re-inserting the glass plate.
Feeder motor
Correct use of the feeder motor is very important for material extrusion.
Pressure
For the filament to be smoothly extruded into the Bowden tube and nozzle, the correct pressure of the feeder motor is crucial. If the pressure is too high, the feeder roller inside the motor will dig into the filament, causing it to deform or create holes, or even worse, completely jam.
To avoid the above situations, try to adjust the feeder motor's pressure to the correct position. The adjustment method is as follows:
1. First, you can see a white pressure indicator on the right side of the feeder motor.
2. If the pressure indicator is at the uppermost position, it means the feeder motor pressure is at its loosest state.<
3. Under normal circumstances, keep the white pressure indicator in the middle position. You can adjust the tightness by turning the screw in the small hole in the upper right corner of the feeder, according to the material used and printing conditions.
Lubrication
To ensure your 3D printer operates smoothly, remember to apply lubricant after a period of use.
X/Y-axis lubrication
When you notice inconsistent layer thickness on the same layer of your 3D printed object, or if the X/Y axes feel dry, it indicates that the machine needs lubrication. It is recommended to apply 1-2 drops of sewing machine oil (not included in the Ultimaker2+ package) to the X/Y axes for lubrication.
Caution! Do not use WD40 for lubrication, as it will dissolve the plating on the X/Y axes.
Z-axis lead screw
The Ultimaker2+ package includes a tube of green Magnalube lubricant. It is recommended to lubricate the Z-axis lead screw approximately once every six months. The method of use is as follows:
1. Apply 10 drops of Magnalube lubricant along the entire lead screw.
2. Move the print platform up and down to spread the lubricant evenly over the entire lead screw.
Caution! Do not use Magnalube lubricant for any other axes besides the Z-axis lead screw.
Nozzle cleaning method
After using your Ultimaker2+ 3D printer for a while, you may notice signs of extrusion problems: such as objects becoming very thin or some layers not being fully printed. This means your Ultimaker2+ is not extruding enough plastic. In most cases, this is caused by the nozzle being clogged with dirt or carbonized plastic. If you encounter these extrusion issues, it is recommended to use the following method to clean the nozzle and other heating components. The following describes this simple but very effective process.
Tips! It is also recommended to perform the following actions when switching from a filament that requires a higher temperature to one that requires a lower temperature.
Remove the filament
1. Go to MATERIAL > CHANGE to remove the filament. When the machine prompts you to insert new filament, select CANCEL.
2. Manually move the extruder to the front of the Ultimaker 2+ to help you proceed to the next step.
Remove the Bowden tube
1. Remove the (blue or red) Bowden tube retaining clip.
2. Press down on the white Bowden tube coupler and pull out the Bowden tube.
Heating and preparation
1. Cut about 20 cm of filament and try to straighten it as much as possible.
2. Using the Ultimaker 2+, select MAINTENANCE > ADVANCED > Heatup nozzle and set it to 260 degrees.
3. Once the temperature is reached, insert the straightened filament and manually push it down into the nozzle.
4. Push the filament slightly until filament is extruded from the nozzle or until the filament can no longer advance.
Pull out the filament
1. Lower the temperature to 80-90 degrees (for PLA) or 110 degrees (for ABS).
2. After the nozzle has cooled to the target temperature, wait 30 seconds to 1 minute, then quickly and steadily pull out the filament.
3. Check the color and shape of the filament end to see if it is clean and has the conical shape of the nozzle tip.
4. Repeat the two steps of heating and preparation and pulling out the filament until the pulled-out filament has no residue and has a conical shape.
Tips! The key is to pull out the filament quickly. If you pull too slowly, the filament's elasticity will prevent it from carrying out the dirt.
Reassembly
1. Insert the Bowden tube back into the coupler, making sure it is fully seated.
2. Install the Bowden tube retaining clip to secure the Bowden tube.
If the above method still cannot solve the nozzle clogging problem,
then you can use a 0.35mm needle to clean the nozzle.
Heat it up, then insert the needle from bottom to top,
repeating until plastic is smoothly extruded.
Source: https://ultimaker.com/en/manuals/ultimaker-3d-printers/ultimaker-2-plus/maintenance
Translated by: 3DMART Ltd.