1
Rack chassis
2
Rack-mounting bolt
3
Thin washer
4
Top plastic isolator bushing
5
Thick washer
6
Spacer
7
Jam nut
8
Leveling foot
9
Lower plastic isolator bushing (used only on DC powered systems)
AC
Typical leveling foot installation for an AC-powered rack
DC
Typical leveling foot installation for an DC-powered rack
6. Position the two mounting plates in the approximate mounting location under the rack.
7. Create a rack-mounting bolt assembly by adding the following items, in the order listed, to each rack-
mounting bolt.
a. Thin washer
b. Top plastic isolator bushing
c. Thick flat washer
d. Spacer
Note: Ensure the bottom isolators are in place to ensure that the mounting plate and the rack-
mounting bolts are properly aligned.
8. Insert a rack-mounting bolt assembly through each of the leveling feet.
9. Reposition the rack-mounting plates under the four rack-mounting bolts so that the mounting bolts
are centered directly over the threaded bolt holes.
10. Turn the rack-mounting bolts four complete turns into the mounting plate's threaded bolt holes.
8
Power Systems: Racks and rack features
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