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2. Assemble the rails that will accommodate the array in the rack. The long main left and right
rails are used in all installations (these rails have a bottom piece on which the array sits in the
rack). However, you must determine whether to use the two medium rear rails or the two
short rear rails based on the depth of your rack. Then assemble the main and rear rails
together at the exact length to match the distance between the front and rear vertical supports of
the rack.
3. After determining which rear rails to use, orient the left rear rail so its flange faces outwardly
to the left and orient the left main rail so the bottom lip (which will support the array)
protrudes inwardly, as shown in the following figure. Then secure the left rear rail to the left
main rail using two of the supplied short screws (the screws go through the slots in the rear
rail and into the threaded section of the long rail, as shown in the following figure).
Bottom on main rail is
protruding inwardly
4. Orient the right rear rail so its flange faces outwardly to the right and orient the right main
rail so the bottom lip protrudes inwardly. Then secure the right rear rail to the right main rail
using the remaining two long or short screws (the screws go through the slots in the rear rail
into the threaded section of the long rail).
5. Orient the right rear rail so its flange faces outwardly to the right and orient the right main
rail so the bottom piece protrudes inwardly. Then secure the right rear rail to the right main
rail using the remaining two short screws (the screws go through the slots in the rear rail into
the threaded section of the long rail.
6. Insert the rails into the rack and secure the rails to the vertical supports using one of the
following methods:
If the rack has square punchout holes, secure the rails using the supplied long screws
with the supplied snap-in spring-loaded cage nuts. Attach the nuts to the three rail
holes (top, bottom, and second-from-the-bottom) on the front left and right sides of
the rack. Then attach nuts to the two middle holes on the rear of the rack.
If the rack holes are unthreaded circular holes, use the long screws with the supplied E-
shaped nuts. Attach E-shaped nuts to the three rail holes (top, bottom, and second-
from-the-bottom) on the front left and right sides of the rack. Then attach E-shaped
nuts to the two middle holes on the rear of the rack.
38
Appendix B Installing the System in a Rack
Figure B-2. Securing the Main and Rear Rails
Flange on rear rail is facing
outwardly
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