3D Systems FIGURE 4 MODULAR User Manual page 158

1. Remove the carbon-filter bracket and the filter will drop
down. Discard the filter according to all government
regulations.
2. Place your new carbon filter in the bracket, as shown.
There is not a specific airflow direction; so X/Y orientation
is all that matters. Be sure to install it with the metal flaps
at the top, relative to the printer (see below).
1. Insert the bracket with the new filter into the machine as
shown, being sure to move any wires/cables that may be in
the way.
3D Systems, Inc. 154 p/n 42-D116, Rev. K