Dell Force10 S25N-S50N Installing S50N and S50V Systems - Page 31

Inserting Tandem S50V PSUs into a Rack, Attaching Rack Ears to PSU

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for a single unit. For a tandem installation, see Inserting Tandem S50V PSUs into a Rack on page 31. Step Task 1 Using a #2 Phillips screwdriver, attach the short sides of the rack ears to the front corners of the power supply with the supplied screws. Figure 5-3. Attaching Rack Ears to PSU 2 Insert the power supply into the rack and brace it temporarily in the rack so that the screw holes in the long sides of the rack ears are flush and align with the screw holes in the rack posts. 3 Secure the power supply on the left and right sides by tightening the supplied screws through the flanges to the side of the rack, as shown in Figure 5-4. (Cage nuts are also supplied for racks that have mounting holes without threads.) Figure 5-4. Mounting Single PSU in Rack Inserting Tandem S50V PSUs into a Rack To install two S50V PSUs (the 470W Redundant Power Supply) in tandem (side-by-side) in a rack, follow these steps: Step Task 1 Using a #2 phillips screwdriver, attach the supplied extended rack ears to the outside, front sides of the two PSUs. As shown in Figure 5-6, the long side of the rack ear is attached to the PSU, with the short side projecting at right angles away from the front corner of the PSU. Installing Backup Power | 31

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Installing Backup Power
|
31
for a single unit. For a tandem installation, see
Inserting
T
andem S50V PSUs into a Rack on page
31
.
Inserting Tandem S50V PSUs into a Rack
To install two S50V PSUs (the 470W Redundant Power Supply) in tandem (side-by-side) in a rack,
follow these steps:
Step
Task
1
Using a #2 Phillips screwdriver, attach the short sides of the rack ears to the front corners of the power supply
with the supplied screws.
Figure 5-3.
Attaching Rack Ears to PSU
2
Insert the power supply into the rack and brace it temporarily in the rack so that the screw holes in the long sides
of the rack ears are flush and align with the screw holes in the rack posts.
3
Secure the power supply on the left and right sides by tightening the supplied screws through the flanges to the
side of the rack, as shown in
Figure
5-
4
. (Cage nuts are also supplied for racks that have mounting holes without
threads.)
Figure 5-4.
Mounting Single PSU in Rack
Step
Task
1
Using a #2 phillips screwdriver, attach the supplied extended rack ears to the outside, front sides of the two PSUs.
As shown in
Figure
5-
6
, the long side of the rack ear is attached to the PSU, with the short side projecting at right
angles away from the front corner of the PSU.