Rockwell Automation Allen-Bradley 6181, User Manual, Page: 39 / 91

Adding/Removing System Components 4–7
Publication 6181-6.0
3. Hold the board by the edges and firmly press the board into the
connector on the processor board.
Note:
Be careful not to disturb the air flow director. It is required
to keep the CPU cool.
The flow director should be routed behind the two add-in
card slots and extend alongside the CPU heat sink.
4. Align the notch in the board retainer with the threaded hole and
install the screw. Hold the notch tightly against the screw before
tightening.
Note:
If you do not install the retainer tight against the screw,
you may have problems inserting an adjacent board.
5. Connect any board cables (if required).
6. Install the top cover. See Page 4-3.