Replacing the Hot End Fans and Mounts

Instructions: 

1. Turn off and unplug the Gigabot from the outlet

2. Using a 2.5mm Allen wrench, take off the back cover of the print head by removing the two screws shown below:

   

   

3. Remove the two fan connections from the back plate and unplug.

   

4. Remove the fan mounts from the hot ends by gently pulling the clip off of the heat sinks

5. Carefully slide the old print head cooling fan out of the print head cover slot:

   

6. By navigating the wire connectors through the hole in the back plate, remove the fan assembly from the whole print head. You may need to unplug the extruder motor cables to free them.

   

7. If you are just replacing the fans and not the mounts, follow these instructions before continuing on: Installing Hot End Fans to the Fan Mounts

8. With the new fan and mount assembly prepared, attach the fan mounts to the hot ends by gently pressing the clips onto the heat sinks until they seat in place. Ensure that the outrigger fans are positioned on the outside of the hot ends, and verify that the top of each fan mount are sitting flush against the trolley plate.

   

   

9. Route the hot end fan wires behind the extruder motors. The print head cooling fan wires should be routed over the top of the motors. Pass the connectors through the opening in the back plate, then reconnect the extruder motor wires.

   

   

   

10. Plug the fan wires back into the original wiring harness. Make sure that any wires labeled “OR” are connected to the matching “OR” wires in the harness.

    

11. Put the connectors into the slot in the back plate

    

12. Carefully slide the new print head cooling fan into the print head cover slot, making sure the sticker of the fan is facing the inside of the part

    

13. Reinstall the back cover and the print head cover. Before tightening the screws, confirm that the fan wiring is routed through the notch in the print head cover and is not pinched when the cover is secured.

    

14. Once completed, you are ready to start up your Gigabot again.

Questions or concerns? Reach out to our support team at support@re:3D.org or open a support ticket.