Dell POWERVAULT MD1000 - Manual (Page 19)

Rack Installation Guide
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2 Disengage both thumbscrews on the front panel of the chassis.
3 Slowly slide the system approximately 10 inches out of the rack, or until the latches on either side
of the system catch on the rectangular stop holes on the vertical rails (see Figure 1-7).
4 With the help of another person on the other side of the rack, depress the round release buttons (blue)
on each side of the system and slide the system completely out of the rack.
5 Place the system on a strong, stable surface.
Replacing the Rack Doors
See the procedures for replacing doors in the documentation provided with your rack.
CAUTION:
Because of the size and weight of the rack cabinet doors, never attempt to remove or install them by
yourself.
This completes the rack installation of your system in a four-post rack cabinet.