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4. Changing the Nozzle
If the nozzle becomes worn or badly clogged then replace it. .
This is regarded as normal wear and tear and is not covered under
the warranty.
The standard Nozzle is brass with a 0.4mm diameter and a M6 thread, these are often called MK8 nozzles.
To remove the nozzle:
Heat the nozzle and remove the filament, then allow it to cool to avoid any burns.
Raise the nozzle well away from the build plate.
Remove the cover over the hot end by unscrewing the two screws holding it in place at the back and gently unclipping it from the
mounting.
Carefully peel away the silicon cover from the hot end and nozzle and remove.
Support the heater block or hot end carefully with a spanner (not included) and unscrew the nozzle with a 6mm spanner (included)
If the nozzle will not unscrew easily heat the hot end to make sure that any filament stuck to it is molten.
If you had to heat the nozzle to remove it let it cool before proceeding for safety.
Gently clean the hot end around the nozzle.
To fit the new nozzle:
● Screw in the new nozzle just finger tight then slacken a full turn.
●
Remove the clip from the pneumatic fitting, press in the collar to disengage the internal clips and make sure the Bowden tube is
pressed in firmly as far as it will go. Pull out the collar and replace the clip around the pneumatic fitting to lock the tube in place.
●
Now reheat the nozzle, once it is up to temperature support the heater block with a spanner and tighten the nozzle into the heater
block. The final tightening must be performed with it hot (180˚+) to allow for thermal expansion.
●
Once again let it cool to avoid burns and then replace the silicon cover followed by outer cover over the hot end with the fans.
NOTE: Before replacing the fan cover it is a good idea to clean out any dirt or filament wisps from the inside of the fans and grilles.
