How to Calibrate the Nozzle Height

[ Manual Pro2 Series - How to Calibrate the Nozzle Height - V1.0 ]

1. Home the build plate, and set the “Move Steps” to “10mm”. Select the down arrow to lower the build plate’s height to 100mm.

2. Unload the filament.

1)      Set both extruders to the proper unloading temperature. The recommend target temperature is typically 5-10℃ higher than its common printing temperature.

2)      Select “Unload” to begin the unloading process.

3)      After the unloading process is completed, remove the filament and the filament guide tube from the extruder.

Note: If there are any filaments left in the extruder, the nozzle may be jammed by the cooled filament and cannot move.

3. Open the ‘Home’ tab, and click on the nozzle temperature. In the new window, set the temperatures for both nozzles to 0, and click OK. Allow the components to cool down completely before continuing.

When the extruders reach an ambient temperature, power off the printer.

4. Remove the screws from the cooling fan with a 2.5mm hex wrench.

5. Push the hot end all the way up until the heat sink touches the collet.

Secure this position by tightening the retaining screw depicted in the figure below. 

6. Remove the screws from the right side cooling fan. 

7. Loosen the screw marked in red with 2.5mm hex wrench.

8.  Push the hot end all the way up until the heat sink touches the collet.

Secure this position by tightening the retaining screw. 


9. Raise the Z limit pin by rotating the bottom screw 1 turn counter clockwise.

10. Home the Z axis.

1)      Heat the left nozzle to 180℃ or to the temperature of loaded filament in the home screen.

1)      In the “Utilities tab”, select the Z-axis “Home” button to move the bed into the origin position.

11. Disable the motor by selecting the “Disable Motor” button located in the top left of the screen. This will allow you to move the extruder freely. Move the extruder to the center position.

12. Calibrate the left nozzle.

1)      Use the feeler gauge (included in the printer accessory box) and place it under the left nozzle.

2)      Lower the nozzle height and move the feeler gauge. When the nozzle is calibrated correctly, you can feel have friction between the build plate and the nozzle.

3)      To adjust the nozzle height, turn the thumb screw as shown.

Note: Do not adjust the smaller side-mounted screw.


4)      You should make adjustments gradually. The height change is only visible after the build plate is in position.

5)      Home the Z-axis height, and then use a feeler gauge to check the new height.

6)      You need to return to the position every time you turn the thumb screw. Repeat until you get the desired result.

13. In the Home screen, heat the right nozzle to 180℃. Enable the right nozzle by clicking the icon, then the down arrow. Once the nozzle is enabled, set the temperatures to 0℃, and allow them to cool completely before continuing.

14. Calibrate the right nozzle.

1)      Once the hotend has cooled down completely, insert the feeler gauge under the right nozzle and check the height.

2)      If the nozzle needs further adjustments, loosen the retaining screw, and manually move the hotend until it is able to come in contact with the feeler gauge.


Note: Do not adjust the bed height. Adjusting the bed will affect the left nozzle, you need to recalibrate it from step 9.


15.After you adjust the nozzle height, reinstall all the screws.

[ Manual Pro2 Series - How to Calibrate the Nozzle Height - V1.0 ]