User's Manual

3 SYSTEM COMPONENTS
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Figure 3.8 Nozzle subassembly
3.6 XY Axis Subassembly
The XY axis subassembly drives the dual nozzle extruder to move within the XY plane as instructed.
Both X axis and Y axis are driven by synchronous belt, which does not require further adjustment as its
tensile force has been adjusted to a suitable state when the machine leaves the factory. After a certain
period of use, the obvious reduction of printing quality may be caused by the looseness of synchronous
belts for various reasons. In that case, remove the left and right lateral plate of the machine to inspect the
left and right synchronous belt of Y axis for their tensile force, and open the top door to inspect the
synchronous belt of X axis for its tensile force. In case of too low tensile force on any one synchronous
belt, such synchronous belt may be adjusted by the method as shown in following figure. The left and
right synchronous belt of Y axis shall be kept in consistent tensile force.
Figure 3.9 Adjustment of tensile force of synchronous belts on Y axis