05.7 Nozzle clearing
Nozzle clogging can occur due to several factors. From contamination with solid particles,
the use of inadequate printing parameters, or even excessive proximity between the plate
and the nozzle may be responsible for the nozzle clogging.
To perform this operation follow the following steps in the order described:
1. With the machine turned on but not printing, select Control and then Temperature.
Put the nozzle at 220ºC and wait until the temperature stabilizes.
2. In the menu select Control and click Disable steppers to disable the motors.
3. Then press down the plastic part of the tting and at the same time pull the PTFE tube
in the opposite direction. (To learn more about disconnecting the PTFE tube, see page
66 of the TIPS section of the Blocks Zero assembly guide.)
4. Then, by gradually increasing the force, push the lament manually near the hot end in
the direction of the nozzle. When you have already pushed at least 3 to 5 cm of lament,
pull it back. Cut the tip of the lament you just pulled from the hot end.
5. Completely remove the lament from the machine by pulling it at the extruder entrance
and at the same time relieving the tension of the extruder hinge.
6. Unscrew and remove the tting from the hot end.
7. Take a piece of PLA with at least 30 cm and repeat step 4 until the plastic exit through the
nozzle is normalized. The plastic outlet should be linear and should not curl.
8. Put back the hot end tting by tightening it with your hand only and insert the PTFE tube.
Make sure that it reaches the heatbreaker (about 5 cm below the top of the tting).
9. Load the lament in the machine as described before and make a test print to check that
the nozzle has become unobstructed.
If you did not succeed repeat all the steps above.
If you still do not get good results contact our customer support.
Maintenance05
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