H3C RL-1U-A 1U User manual

Manual version: AW100-20220823
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H3C RL-1U-A 1U Bottom-Support Rails Installation
Guide
1 About the support rails
The H3C RL-1U-A 1U bottom-support rails are extendable in length. The left and right
bottom-support rails are similar.
Figure 1 Right bottom-support rail
(1) Guide rail
(2) Bottom-support rail installation hole
(3) Locating tab
(4) Front plate installation hole
(5) Sign
The bottom-support rails came with a front plate, as shown in Figure 2. To ensure adequate
ventilation of the device, use the front plate together with the bottom-support rails.
Figure 2 Front plate
(1) Installation holes
2 Specifications
Table 1 Bottom-support rail specifications
Max weight bearing
capacity
Length range Rack space Compatible device models
200 kg (440.92 lb) 380 to 630 mm (14.96
to 24.80 in) 1 RU •CR16000-M8
•CR16000-M16
When you install the bottom-support rails, follow these restrictions and guidelines:

Manual version: AW100-20220823
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•
To attach the bottom-support rails to a rack, make sure the rack depth is in the length range of
the bottom-support rails.
•
Make sure the bottom-support rails have sufficient weight bearing capacity to support the
device and its accessories.
3 Installation procedure
The bottom-support rails are applicable only to four-post racks.
The bottom-support rail installation might vary by rack type. The following installation procedure is for
your reference only.
To install the bottom-support rails:
1. Read the signs on the bottom-support rails to avoid installation mistake.
Table 2 Description of the signs on the bottom-support rails
Sign
Meaning
Remarks
FRONT/LEFT
Front end of the left
bottom-support rail Mount this end to the front left rack post.
RIGHT/FRONT
Front end of the right
bottom-support rail Mount this end to the front right rack post.
2. Mark the bottom-support rail installation positions on a rack post.
Figure 3 Installing cage nuts
3. Make sure the bottom edge of the bottom-support rail aligns with the middle of the narrower
metal area between holes in the rack post, and the locating tab aligns with the auxiliary
installation hole in the rack post. See Figure 4.
NOTE:
•
In this document, the right bottom-support rail is installed first.
•
One rack unit has two standard installation holes and one auxiliary installation hole in the middle.
The space between a standard installation hole and an auxiliary installation hole is larger than
the space between two adjacent standard installation holes.

Manual version: AW100-20220823
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Figure 4 Determining the bottom-support rail installation position on a rack post
4. Mark the square holes at the same height on the other three rack posts. You only need to mark
the uppermost square holes and lowermost square holes for installation.
Install two cage nuts at a distance of 1U between them on each rack post. Make sure the
corresponding cage nuts on the left and right rack posts are at the same height.
5. Align the bottom-support rail installation holes on the front end of the bottom-support rail with
the cage nuts on the front rack post. Use two screws to secure the front end of the
bottom-support rail to the front rack post, as shown by callout 1 in Figure 5.
6. Keep the bottom-support rail horizontally and adjust its length until the bottom-support rail
installation holes on the rear end of the bottom-support rail engage the cage nuts on the rear
rack post. Use two screws to secure the rear end of the bottom-support rail to the rear rack post,
as shown by callout 2 in Figure 5.
7. Repeat steps 5and 6to install the other bottom-support rail. Make sure the two bottom-support
rails are at the same height so that the device can be placed on them horizontally.
Figure 5 Using screws to secure the bottom-support rails to the rack posts
NOTE:
T
o ensure the weight bearing capacity, make sure each installation hole in the bottom-support rails
has a screw attached.

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8. Attach the front plate to the bottom-support rails.
Figure 6 Attaching the front plate to the bottom-support rails
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