Dell PowerEdge 4220 Guide D'installation page 26

Installing the Rack Stabilizer Feet
WARNING:
installed could cause the rack to tip over, potentially resulting in bodily injury
under certain circumstances. Therefore, always install the stabilizer feet before
installing components in the rack.
Install stabilizer feet on the rack as follows:
• Install front and side stabilizer feet on a standalone rack.
• Install front stabilizer feet on all racks in a suite, and install left or right
stabilizer feet on the racks at each end of a suite.
Installing the Front Stabilizer Feet
1 Open the front door.
2 Reach into the rack and pull up firmly on each stabilizer to detach them
from the frame.
3 Remove the plastic fasteners attached to the stabilizer feet.
4 Position each front stabilizer foot against the base of the rack frame and
align its holes with the corresponding holes in the frame.
5 Use the provided bolts, washers, and cage nuts to secure each foot to
the rack as shown in Figure 1-12.
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Installing systems in a rack without the front and side stabilizer feet
Installation Guide