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a. Remove the two screws at the left and right of the top frame side covers (items 7 and 8 in the
illustration on 94).
b. Lift off the covers.
c. Remove the eight screws around the perimeter of the top panels at the front and rear of the rack
top-frame assembly. Remove the two top panels (item 1 in the illustration on page 98).
d. Carefully note the orientation and position of the foam and metal air baffle (item 4 in the illustration
on page 98) at the middle left side of the rack top frame assembly. Remove the screw, then tilt the
baffle toward the front of the rack top frame.
Note: The foam and metal air baffle must be reinstalled on the left side in its original location. The
foam baffle is a critical part for proper cooling of the BPEs.
e. Remove the single screw at each end of the cross brace (item 5 in the illustration on page 98).
Remove the cross brace.
f. Remove the two screws at the front of the left BPE rail, and remove the rail (item 3 in illustration on
page 98).
g. Remove the two screws at the rear of the right BPE rail, and remove the rail (item 3 in illustration
on page 98).
4
3
1 Rack Top Frame
2 Rack Chassis
Proceed to "Installing the Rack Top Frame".
Installing the Rack Top Frame
To install the rack top frame, complete the following:
1. If you have not done so, use the jack screws to stabilize and lift the rack off the floor, as follows:
a. Loosen the jam nut on each leveling foot by turning the nut counterclockwise.
b. Rotate each leveling foot downward until it contacts the surface on which the rack is placed.
c. Adjust the leveling feet downward as needed until the rack is level. When the rack is level, tighten
the jam nuts against the base by turning the nut clockwise.
2
3 Top Frame Bolts
4 Rack Top Frame Cross Brace
Appendix J. Removing and Installing the Rack Top Frame
99
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