Prusa i3 MK3 - R Eplacing​ ​; ​ ​ C Hanging​ ​ T He​ ​ N Ozzle

1. Heat up the nozzle to 250 °C for PLA or 270°C for ABS jams.
2. Wait 3-5 minutes and then go to LCD - Load filament. If you cleared the clog and
the filament went through, simply lower the temperature to normal and re-do load
filament again.
3. If the filament loads successfully, you can resume printing.
12.6  Replacing / changing the nozzle
If you are replacing the Olsson Ruby nozzle, please visit this website for
instructions, otherwise you might damage it!
http://support.3dverkstan.se/article/66-the-olsson-ruby-instructions-for-use .
Preheat the nozzle (LCD menu -> Settings -> Temperature -> Nozzle) and set the
temperature to at least 200°C. Heating the nozzle is crucial for removing the old nozzle and
putting in the new one.
1) Move the extruder body upwards to get to the nozzle end (LCD menu -> Settings ->
Move axis -> Move Z -> Set the height by rotating the LCD knob and then confirm).
2) Unscrew the screw on the fan mouthpiece and the two screws on the print fan and
remove both parts (Pict. 40, part 1).
3) Remove the two front screws on the nozzle fan (Pict. 40, part 2).
4) Unscrew the two screws holding the extruder cover (Pict. 40, part 3). Even though
the nozzle itself is accessible directly, we recommend removing the extruder cover to
get access to the heating element.
5) Now the whole nozzle body is accessible (Pict. 40, part 4).
6) Hold the heating element with a spanner (size 17) and unscrew the nozzle (Pict. 40,
part 5). Be careful, the nozzle is still hot!
When the new nozzle is inserted, tighten it while the nozzle is preheated. While tightening do
not forget to hold the heating element with the spanner. Re-assemble the extruder, insert the
filament and you are ready to print.
Be careful, the nozzle is hot during this whole process and can cause burns!
Be careful around the hotend thermistor leads, you can break them easily.
Be careful and don’t apply force to the nozzle or heater block, you can bend
the heatbreak easily.
It is a good practice to run 6.3.9 First layer calibration after changing the nozzle!
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