Dell PowerEdge Rack Enclosure 4020S - Manual (Page 20)

18
Installation Guide
Removing and Replacing the Extension Service Cover
WARNING:
The extension service cover must only be removed when installing or
removing components from the upper rack unit spaces and must be reinstalled
immediately. Components in the rack may overheat if the extension service cover
is not installed in the rack enclosure.
NOTE:
Do not use the extension service cover as an outlet to route cables out of
the rack.
NOTE:
Removing the extension service cover allows you to install and service the
equipment in the upper rack unit spaces more easily.
Removing the Extension Service Cover
1 Loosen and remove the four wing nuts located on the top surface inside of
the extension. See Figure 7.
2 Lift the extension service cover until the studs clear the holes in the extension.
3 Remove the extension service cover.