Dell PowerEdge 4220 Guide D'installation page 14

Removing and Replacing the Side Panels
CAUTION:
running systems in the rack to ensure proper cooling within the rack.
NOTE:
feet.
NOTE:
a rack, having the sides open makes it easier to install slide assemblies and support
rails and to reverse the direction that the front door opens.
Removing the Upper Side Panels
1 Pull both latches up and swing the bottom end of the panel away from
the rack.
2 Grasp firmly on each side of the panel.
3 Lift the panel upward until the panel lip clears the top of the rack.
4 Lay the panel in a safe location with the panel's outer surface facing
upward to help prevent damage to its cosmetic coating.
5 Repeat step 1 through step 4 for the other upper side panel.
Replacing the Upper Side Panels
1 Lift the upper side panel up onto the rack, hooking the panel lip over
the top of the rack (see Figure 1-4).
2 Swing the bottom of the panel downward onto the rack.
3 Press the panel into the rack until both latches lock into place.
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For stand-alone racks, reinstalling the side panels is necessary before
You must remove the lower side panels in order to install the side stabilizer
Although removing the side panels is not mandatory for installing systems in
Installation Guide