User's Manual

7 MAINTENANCE
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foreign matters on the nozzle brush. If most of the brass wire cannot keep upright, the nozzle brush shall
be replaced by a new one. As shown in following figure, the position of nozzle brush may be adjusted by
up and down adjusting the 4 retaining screws on the nozzle brush support, so as to keep about 1mm of
overlapping distance between the nozzle and the brush on Z axis direction.
Figure 7. 1 Nozzle brush
7.2.3 Clean the chamber
In the process of printing, the nozzle brush will scrape some material fragments down to the chamber. So
please carefully clean up the interior of chamber after each product is printed.
7.2.4 Clean the nozzle
After the completion of each print, the nozzle shall be inspected for any printing material adhering to its
surface. To avoid the impact of residual material covering the nozzle on the nozzle's service life, and also
to make better preparation for the next print, please pay close attention to the cleanliness of the nozzle
surface. Where too much material adhere to the nozzle, the nozzle shall be heated and then be cleaned
up by wooden handle brass wire brush.
7.3 Periodic Maintenance
7.3.1 Cleansing of the feeding gear of extruder
After long-term use, the more and more material fines cut off are accumulated in the gear groove of the
feeding gear, causing the reduction in feeding force of the extruder. It is suggested to dismantle the front
cover of the nozzle and inspect the gear grooves of the feeding gear for material accumulation once every
month. Where necessary, carefully clear each gear groove with small brass wire bush, tweezers or similar
tools.