3D Systems FIGURE 4 MODULAR User Manual page 159

1. Line up the four holes of the bracket with the four holes on
the Printer. Reinstall the four thumb screws to secure the
bracket in place. To line up the bracket easier, it is helpful
to install thumb screws on opposite corners first, as in the
image at the right.
1. Close the top door and lock the latches by pushing on the
levers.
3D Systems, Inc. 155 p/n 42-D116, Rev. K