Dell EMC Unity Series Field Upgrade Procedure page 23

Installing the nut clips
Procedure
1. Locate the 3U cabinet space designated for the enclosure.
2. Install the right rail (R) to the rear NEMA channel.
1
Refer to of Figure 20
a. Align the right rail with the lower U of the allotted 3U space.
Note
Each of the rail alignment pins must be located in the middle NEMA holes of
the bottom two U spaces of the 3U space.
b. With the release latch on the outer (rear) part of the rear NEMA channel,
place the catch mechanism over the channel.
c. Push the rail back to secure the rail posts in the cabinet channel. An audible
click indicates that the rail is secure in the channel.
d. Ensure the rear post/catch mechanism is secure and attached.
3. Install the right rail (R) to the front NEMA channel.
2
Refer to of Figure 20
a. Align the front of the right rail so that it is level and the front rail pins are
aligned with the middle holes of the bottom two U spaces of the 3U space.
b. Pull the rail forward, with the posts aligned with the middle NEMA holes of
the bottom two U spaces of the 3U space.
An audible click indicates that the connection is secure.
4. Install the left rail (L) by mirroring
5. On both left and right rail assemblies, install a single long screw between the rail
posts in the upper screw hole to secure the rails.
Two nut clips are required on the front NEMA channels to secure the DAE chassis to
the front of the cabinet.
Procedure
1. From the front of the cabinet, insert two nut clips:
On the left NEMA channel, into the third hole above the top rail pin.
l
On the right NEMA channel, into the third hole above the top rail pin.
l
2. After installing, ensure that the nut clips line up with the respective holes and
adjust if needed.
on page 22while performing these steps.
on page 22while performing these steps.
step 2 and step
Adding an optional 80-drive DAE
3.
Installing the nut clips
23