Chapter 3: Installing the Chassis in an Equipment Rack

Adjusting the Equipment Rack Brackets

The chassis has two pre-installed equipment rack brackets. You may adjust the brackets so that the front of the chassis is flush with, extends beyond, or is recessed behind the front of the equipment rack. You may also install the brackets so that the rear panel of the chassis is flush with the front of the equipment rack.

You adjust the brackets by removing them and re-installing them in different positions on the sides of the chassis. The bracket positions are listed in Table 20 and illustrated in Figure 35 on page 81 and Figure 36 on page 81. Please review the following information before moving the brackets:

Position A, the default position, positions the chassis so that the front of the unit is flush with the front of the equipment rack.

Position B recesses the front of the chassis by 27.39 mm (1.1 in).

Positions C to E extend the front of the chassis beyond the front of the rack from 27.39 mm (1.1 in) to 140.85 mm (5.545 in).

Position F installs the chassis with the rear panel flush with the front of the equipment rack.

To install the rack mount brackets in position “E,” you have to remove the two chassis screws from the bottom-middle section of the chassis and re-install them in front where the rack mount bracket screws were originally, as shown in Figure 35 on page 81.

The dimension (X) between the front panel and the rack rails is given for each rack mounting bracket position in Table 20.

Table 20. Front Panel to Rack Rail Dimensions

Figure #

Front Panel Position

Dimension X

Front Panel to Rack Rail

 

 

 

 

 

35

A

3.69 mm (0.145 in)

 

(Factory Installed - Flush)

 

 

 

 

35

B

-27.39 mm (-1.078 in)

 

(Recessed)

 

 

 

 

35

C

27.39 mm (1.078 in)

 

 

 

35

D

47.71 mm (1.878 in)

 

 

 

35

E

140.85 mm (5.545 in)

 

 

 

36

F

374.16 mm (14.731 in)

 

(Reverse Position)

 

 

 

 

80

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Image 80
Allied Telesis X8106 manual Adjusting the Equipment Rack Brackets