Product notification
This product has been discontinued, and its end-of-service date has passed. While it is no longer supported, the information on this page remains available for your reference.
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The nozzle cover shields the print cores from cold airflow from the fans, which helps the print cores to maintain a stable temperature while printing. The cover also helps to prevent backflow of material into the print head when something goes wrong during printing.
The heat of the nozzles may cause wear on the nozzle cover over time. Check the nozzle cover according to these instructions and replace it when necessary.
Caution: Before you start, make sure that the print cores have completely cooled down. Turn off the printer or ensure it is disabled in the UltiMaker Digital Factory to prevent new print jobs from starting remotely.
Note: There are different procedures for the old-style and new-style nozzle covers. Determine which version you need before purchasing parts and starting this procedure.
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Old-style nozzle cover (2161)
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New-style nozzle cover (210542)
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Requirements and info
| Part(s) | 1x 2161 - Nozzle cover (old-style), or
1x 210542 - UM3 nozzle seal (new-style) |
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| Tool(s) | Round or flat-tipped tweezers (recommended for new-style nozzle cover) |
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| Time | 3 - 10 minutes |
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| Difficulty level | 1 - Easy (old-style)
2 - Accessible (new-style) |
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Instructions
To view the detailed, step-by-step instructions for replacing the nozzle cover, please select the version of your nozzle cover below.
Tip: If the accordions do not expand when you click on them, please refresh the page.
Old-style nozzle cover
Disassembly
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1. Open fan bracket
Manually place the print head in the front-center for easier access. Gently open the front fan bracket.
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2. Push out nozzle cover
From the inside, push one side of the nozzle cover out of the fan bracket with your finger or using a tool such as a screwdriver.
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3. Remove nozzle cover
From behind the fan bracket, take the loose side of the nozzle cover and pull it out of the fan bracket.
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Reassembly
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1. Orientation
Hold the new nozzle cover with the flat side facing down and the larger hole on the right. Then place it behind the fan bracket.
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2. Insert top tabs
From behind the fan bracket, first insert the two tabs at the top of the nozzle cover through the holes in the metal bracket.
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3. Insert bottom tabs
Next, bend the nozzle cover to fit the two tabs at the bottom of the fan bracket.
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4. Align the sides
Press on the underside of the silicone cover on the left and right sides to fit the tabs on either side of the fan bracket.
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5. Align the middle
Take the left side of the cover between your thumb and index finger. Pull it slightly towards the left and towards you to fit it around the metal strip in the middle. Repeat for the right side.
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6. Close fan bracket
When you have finished aligning all tabs of the nozzle cover, close the fan bracket again. Finally, check the placement of the cover from the underside of the print head, see the examples below:
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| Incorrect placement. One corner is pushed into the bracket. Adjust its position. |
Correct placement. The cover is well aligned and completely flat on the underside.
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New-style nozzle cover
Tip: You can also watch a video of the nozzle cover replacement on YouTube. This video shows the UltiMaker S5, but the replacement steps are almost identical for the Ultimaker 3.
Disassembly
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1. Unload print cores
For the new-style nozzle cover, it is recommended to first unload both print cores to provide more space. Go to Material/PrintCore → PrintCore [1/2] → Unload.
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2. Remove old cover
Close the fan bracket again. From the underside of the print head, peel away the front corner of the nozzle cover, and pull it out of the fan bracket.
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Reassembly
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1. Orientation
Open the fan bracket and hold the new nozzle cover in the correct orientation behind the bracket. Ensure the shapes of the cover match the holes in the fan bracket.
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2. Insert middle tab
From behind the fan bracket, slightly bend the nozzle cover and insert the middle tab through the slot in the fan bracket and metal plate.
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3. Seal middle tab
From the inside of the print head, apply pressure to the metal plate. At the same time, pull the tab through the bracket and plate until the seal locks the cover in place. You can use (round or flat-tipped) tweezers for this.
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4. Fold pockets
Pull the right side of the nozzle cover and fold the pocket over the edge of the metal plate. Push the tab of the nozzle cover under the metal tab of the fan bracket. Repeat this for the left side.
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5. Front tab
From behind the bracket, push the front tab through the slot at the front, while applying pressure to the metal plate from the inside of the fan bracket. Make sure the seal is pushed completely through the plate, to lock the cover in place.
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6. Check placement
Close the fan bracket and check if the new nozzle cover is correctly placed. Slide your finger across the bottom of the print head. If the nozzle cover easily detaches from the fan bracket, check the seals and redo steps 2-5.
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7. Load print cores
Open the fan bracket and insert both print cores (see note below). In the Ultimaker 3 menu, go to Material/PrintCore → PrintCore [1/2] → Load.
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8. Align the cover
With the front fan bracket closed, hold the nozzle cover on both sides and slightly move it left and right. The metal place and nozzle cover will now align themselves with the print cores.
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Note: When installing the new-style nozzle cover, always make sure the print cores do not have a nozzle ring installed. Please see this page for more information: Remove the print core nozzle-ring
Tip: As an extra check, it is recommended to manually lift and lower the second print core using the lift switch on the right side of the print head. If the fan bracket easily falls open when the print core is lowered, the placement of the nozzle cover is probably not correct. Go through the steps again.
