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How to Replace 3D Printer Hot Ends on the Pro2 Series

This manual will show you how to replace the hotend on the Raise3D Pro2 series 3D printer step by step. Checking on build plates and filaments are included in this process, so make sure to follow the steps below and do not forget to contact us with any questions.

 

Tools Needed

  • 2.5mm hex wrench
  • 1.5mm hex wrench

Lower The Build Plate

1. The first step is once your 3D printer is on, access to select the “Utilities” tab.

2. Lower the Z-Axis platform by using the arrows on the onboard touchscreen. See the images below to have a reference for the location of these options.

3. Lower the 3D printer plate until you have enough clearance to comfortably maneuver tools within the area (5-12 mm).

 

Unload Filaments

4.  In the “Utilities” tab, verify that the temperature is set for your selected material. (215℃ for Raise3D PLA).

5. The arrows can be used to adjust the temperature if required. Next, press the “Unload” button to begin.

6.  Now, the 3D printer will begin to heat up to the designated temperature.

7. Once the temperature is reached the “Unload” button will become available.

8. Press Unload to withdraw the filament.

 

Cooldown Process

9. On your screen, open the “Home” tab, and click on the nozzle temperature option.

10. In the new window, set the temperature at 0, and press OK.

11. This process is recommended for both nozzles.

12. It is especially important to allow the components to cool down completely before continuing. Note: when the extruders reach ambient temperature, you can proceed to power off the printer.

 

Removing the Hex Screws

13. Using a 2.5mm hex wrench, remove the two the screws that secure the cooling fan with a 2.5mm hex wrench.

 

 

Loosen the screws inside the heating block

14. Proceed to loosen the 4 set screws with a 1.5mm hex wrench inside the heating block. This will release the hotend from the wiring, which will be removed in the next step.

 

15. Loosen the fixing screw to release the hotend from the 3D printer machine.

16. From the heater block, you will need to remove the heater rod and thermocouple wires to fully remove the hotend.

 

Inspect Replacement HotEnd

17. It is important to completely replace the hotend and verify that the new hotend is properly adjusted. The bottom of the heat sink should lie flush with the bottom of the larger cylinder.

 

 

18. Note that if the heat sink is improperly positioned refer to the “How to Change a Nozzle” document for additional instructions.

 

Wiring Process

19. Insert the heater rod (Red Wire) into the bottom hole of the heater block.

20. Note that when inserting this, you need to insert it until it comes out the other end of the heat block and secures it into place with the two set screws.

21. Insert the silver thermocouple into the upper hole on the heater block.

22. Secure it in place with the two set screws.

 

Installing The Hotend

23. Insert the hotend and push it all the way up into the extruder. Note that the heat sink should contact the collar of the tube.

24. Ensure that is tight enough making this secure it by tightening the fixing screw.

25. If you are looking to replace multiple hotends, repeat steps 13-24 with the second hotend before continuing to the alignment procedures.

 

 

 

 

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