Users Manual Part 3

12. Maintenance

12.1 Replacing Nozzle:

1. Wear heat resistance gloves.

2. The nozzle must be removed while the extruder is heated up to near printing

temperature. When the nozzle is cooled, it will be too tight to be removed and

unscrew the nozzle with force will destroy the hotend.

3. When extruder heated up, use the nozzle wrench to unscrew the nozzle.

4. Put on the new nozzle

5. Heat up the extruder again and tighten the nozzle with wrench.

12.2 Change Extruder:

Tools: An Allen Key and the Extruder you would like to install.

Preparation: Withdraw the filament, switch off the printer, unplug the extruder cable,

and WAIT, until the extruder cools down before taking any further actions.

12.3 Extruder Maintenace

Replace the extruder:

Use the Allen key to unscrew the screw on the left side of the extruder, remove the

extruder, and then position the replacement extruder in the right place, tighten the

screw, and plug in the extruder cable.

12.3.1 Single Extruder

1. Withdraw any filament currently load into the extruder.

2. Remove the cover for CFC cable (rainbow colored).

3. Unplug the extruder CFC cable

3. Unplug the fans. Pull out the extruder casing (gently).