Contents

3 Installing the switch· 3-1

Confirming installation preparations· 3-1

Installing the switch in a rack· 3-2

Switch dimensions and rack requirements· 3-2

Attaching slide rails to the rack· 3-4

Installing cage nuts for attaching mounting brackets· 3-10

Mounting the switch in a rack· 3-13

Grounding the switch· 3-14

 

3 Installing the switch

	IMPORTANT: Keep the packages of the switch and the components for future use.

 

Confirming installation preparations

Before you install the switch, verify that:

·     You have read "Preparing for installation" carefully and the installation site meets all the requirements.

·     A 19-inch rack is ready for use and the rack has enough space to accommodate the switch.

For information about how to install a rack, see the rack installation guide.

·     The rack is sturdy and reliably grounded.

·     No debris exists inside or around the rack.

·     The heaviest device is placed at the bottom of the rack.

·     The rack power supplying capabilities meet the device requirements. For information about the system power consumptions, module power consumptions, and power module specifications, see H3C S12500G-AF Switch Series Hardware Information and Specifications.

·     The total height of the switches to be installed is not higher than the available installation height of the rack and enough clearance is reserved for cable routing.

·     The switch is ready for installation and has been carried to a place near the rack and convenient for moving.

Installing the switch in a rack

Switch dimensions and rack requirements

Figure3-1 S12516G-AF switch dimensions

(1) Fan tray handle	(2) Mounting bracket
(3) Cable management bracket

 

Figure3-2 S12508G-AF switch dimensions

(1) Fan tray handle	(2) Mounting bracket
(3) Cable management bracket

 

Figure3-3 S12504G-AF dimensions (with the LSXM104XFAN fan trays)

(1) Fan tray handle	(2) Mounting bracket
(3) Cable management bracket

 

Figure3-4 S12504G-AF dimensions (with the LSXM104XFANH fan trays)

(1) Fan tray handle	(2) Mounting bracket
(3) Cable management bracket

 

To mount the switch in an enclosed rack, make sure the rack meets the requirements described in Table3-1.

Table3-1 Switch dimensions and rack requirements

Model	Chassis depth	Rack requirements
S12516G-AF	Total depth of 977 mm (38.46 in) ·     102 mm (4.02 in) from the rack-facing surface of the mounting brackets to the front ends of the cable management brackets ·     875 mm (34.45 in) from the rack-facing surface of the mounting brackets to the fan tray handles at the chassis rear	·     A minimum of 1.1 m (3.61 ft) in depth (recommended) ·     A minimum of 130 mm (5.12 in) between the front rack post and the front door. ·     A minimum of 950 mm (37.40 in) between the front rack post and the rear door.
S12508G-AF	Total depth of 977 mm (38.46 in) ·     102 mm (4.02 in) from the rack-facing surface of the mounting brackets to the front ends of the cable management brackets ·     875 mm (34.45 in) from the rack-facing surface of the mounting brackets to the fan tray handles at the chassis rear
S12504G-AF	·     Total depth—977 mm (38.46 in) when the LSXM104XFAN fan trays are installed: ¡     102 mm (4.02 in) from the rack-facing surface of the mounting brackets to the front ends of the cable management brackets ¡     875 mm (34.45 in) from the rack-facing surface of the mounting brackets to the fan tray handles at the chassis rear ·     Total depth—1016 mm (40 in) when the LSXM104XFANH fan trays are installed: ¡     102 mm (4.02 in) from the rack-facing surface of the mounting brackets to the front ends of the cable management brackets ¡     914 mm (35.98 in) from the rack-facing surface of the mounting brackets to the fan tray handles at the chassis rear

 

	NOTE: As a best practice, use a rack that has a single door at the front.

 

Attaching slide rails to the rack

	IMPORTANT: The switch is heavy. Install the switch at the lowest possible position.

Skip this section if slide rails have been installed on the rack.

Before you attach slide rails to the rack, verify that the slide rails can support the total weight of the switch and its accessories. Table3-2 lists the switch weight and applicable slide rails.

Table3-2 Switch weight and applicable slide rails

Switch model	Chassis weight (full configuration)	Applicable slide rails
		Model	Adjustment range	Occupied space
S12516G-AF	360 kg (793.65 lb)	LSXM1BSR	630 to 900 mm (24.80 to 35.43 in)	1 RU
S12508G-AF	200 kg (440.92 lb)	LSXM1BSR	630 to 900 mm (24.80 to 35.43 in)	1 RU
		LSTM2KSGD0	500 to 800 mm (19.69 to 31.50 in)	2 RU
S12504G-AF	115 kg (253.53 lb)	LSVM1BSR10	630 to 850 mm (24.80 to 33.46 in)	N/A

 

	IMPORTANT: M4 or M6 screws are required for attaching the slide rails to the rack. As a best practice, use a torque of 12 kgf-cm (1.18 Nm) and 30 kgf-cm (2.94 Nm) respectively to fasten M4 and M6 screws.

 

	NOTE: The guide rail of the LSVM1BSR10 side rail is at the bottom of the slide rail. After a chassis is placed on the LSVM1BSR10 side rail, the slide rail bottom aligns with the chassis bottom.

 

Attaching the LSXM1BSR slide rails (for the S12516G-AF and S12508G-AF switches)

1.     Read the signs on the slide rails to identify the right and left slide rails and their front and rear ends.

Figure3-5 Left slide rail

(1) Slide rail installation hole	(2) Sign
(3) Guide rail	(4) Front plate installation hole
(5) Locating tongue

 

Table3-3 Description for signs on the slide rails

Sign	Meaning	Remarks
LEFT/FRONT	Front end of the left slide rail	Mount this end to the front left rack post.
RIGHT/FRONT	Front end of the right slide rail	Mount this end to the front right rack post.

 

	NOTE: ·     The LSXM1BSR slide rail accessories include the left slide rail, right slide rail, and front plate. ·     One rack unit (RU) 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 wider than the space between two adjacent standard installation holes.

 

2.     Mark the slide rail installation positions on the rack posts.

¡     Align the locating tongues of the slide rails with the target auxiliary holes in the rack posts, as shown by callout 1 in Figure3-7.

¡     Mark the start installation hole at the same height on each rack post.

3.     Install cage nuts in the marked standard hole and the standard hole within the same RU. A total of eight cage nuts are required, with two cage nuts for each rack post.

4.     Align the installation holes on the front end of the slide rail with the cage nuts on a front rack post.

5.     Keep the slide rail horizontal and adjust its length until the locating tongues on the slide rail are attached to the auxiliary holes on the rack posts.

6.     Use M6 screws to secure the slide rail to the front and back rack posts, as shown by callout 2 in Figure3-7.

To ensure load bearing, each installation hole of the slide rail requires a screw. A total of four M6 screws are required to secure the slide rail to the rack.

7.     Repeat steps 4, 5, and 6 to install the other slide rail.

8.     Attach the front plate to the rack:

a.     Orient the front plate so that the front of the plate faces outward. Figure3-6 shows the rear of the plate.

Figure3-6 Rear of a front plate

(1) Installation hole

 

b.     Align the installation holes in the front plate with the front plate installation holes in the slide rails, and fasten the screws, as shown by callout 3 in Figure3-7.

Two M4 screws are required to secure the front plate to the rack.

Figure3-7 Installing the LSXM1BSR slide rails

 

Attaching the LSTM2KSGD0 slide rails (for the S12508G-AF switches)

1.     Read the signs on the slide rails to identify the right and left slide rails and their front and rear ends.

Figure3-8 Right slide rail

(1) Guide rail	(2) Sign	(3) Installation hole

 

Table3-4 Description for signs on the slide rails

Sign	Meaning	Remarks
F/L	Front end of the left slide rail	Mount this end to the front left rack post.
F/R	Front end of the right slide rail	Mount this end to the front right rack post.

 

2.     Mark the slide rail installation positions on the rack posts.

¡     Make sure the top flange of the slide rail aligns with the middle of the narrower metal area between holes on the right front rack post, as shown by callout 1 in Figure3-9.

¡     Make sure the slide rail installation positions are at the same height on the four rack posts so that the switch can be placed on the slide rails evenly.

3.     Install cage nuts in the marked square holes within 2 RU at the same height on the rack posts, as shown by callout 2 in Figure3-9. Each rack post requires six cage nuts.

a.     Insert the lower ear of a cage nut into the corresponding installation hole.

b.     Compress the upper and lower ears of the cage nut to lead the upper ear through the hole.

4.     Align the installation holes on the front end of the slide rail with the cage nuts on a front rack post, and use six M6 screws to attach the slide rail to the rack post, as shown by callout 3 in Figure3-9.

5.     Keep the slide rail horizontal and adjust its length until the installation holes on the rear end of the slide rail touch the cage nuts on the rear rack post. Then use screws to attach the slide rail to the rear rack post.

Install a screw in each mounting hole of the slide rail to ensure its weight bearing capacity.

6.     Repeat steps 4 and 5 to install the other slide rail.

Figure3-9 Installing the LSTM2KSGD0 slide rails

 

Attaching the LSVM1BSR10 slide rails (for the S12504G-AF)

1.     Read the signs on the slide rails to identify the right and left slide rails and their front and rear ends.

Figure3-10 Right slide rail

(1) Sign	(2) Guide rail
(3) Ventilation holes	(4) Installation hole

 

2.     Mark the slide rail installation position on the rack posts.

¡     Make sure the positioning tabs at the two ends of the slide rail are inserted into the lowest square holes within the 2 RU space on the rack posts. The installation holes on the slide rails are aligned with the square holes in the rack posts. See callouts 1 and 2 in Figure3-11.

¡     Make sure the slide rail installation positions are at the same height on the four rack posts so that the switch can be placed on the slide rails evenly.

3.     Install cage nuts in the marked square holes within the 2 RU space on each rack post, as shown by callout 3 in Figure3-11. Each rack post requires four cage nuts.

a.     Insert the lower ear of a cage nut into the corresponding installation hole.

b.     Compress the upper and lower ears of the cage nut to lead the upper ear through the hole.

4.     Perform the following tasks as shown by callout 4 in Figure3-11:

a.     Align the installation holes on the two ends of a slide rail with the cage nuts on the front and rear rack posts.

b.     Compress the slide rail, making sure the positioning tabs at both ends of the slide rail are inserted into the lowest square holes within the 2 RU space on the rack posts.

c.     Use M6 screws to secure the slide rail to the rack posts.

 

	TIP: Install a screw in each mounting hole of the slide rail for reliable load bearing.

 

5.     Repeat step 4 to install the other slide rail.

Figure3-11 Installing the LSVM1BSR10 slide rails

(1) Positioning tab

 

Installing cage nuts for attaching mounting brackets

Before mounting the chassis in the rack, install cage nuts on the front rack posts for attaching the mounting brackets:

1.     As shown in Figure3-12, Figure3-13, and Figure3-14, mark the cage nut installation holes for the S12516G-AF, S12508G-AF, and S12504G-AF, respectively.

2.     Install cage nuts into the marked square holes in the front rack posts.

¡     For the S12516G-AF and S12508G-AF, cage nuts are not needed for the top two marked square holes in the right front rack post.

¡     For an S12504G-AF, install cage nuts in all the marked square holes.

Figure3-12 Marking cage nut installation holes for attaching mounting brackets (for the S12516G-AF switch)

 

Figure3-13 Marking cage nut installation holes for attaching mounting brackets (for the S12508G-AF switch)

 

Figure3-14 Marking cage nut installation holes for attaching mounting brackets (for the S12504G-AF switch)

 

Mounting the switch in a rack

CAUTION: ·     Hold the chassis handles to move the switch. Do not hold the handle of a fan tray, a power module, or a module, or the air vents of the chassis to carry the switch. Any attempt to carry the switch with these parts might cause equipment damage or even bodily injury. ·     Remove the fan trays, power modules, and filler panels from the switch before lifting. Reinstall these components after installing the switch in the rack. ·     Do not place your hand into any slot when you move the chassis.

 

	IMPORTANT: ·     The switch is heavy. As a best practice, use a mechanical lift, such as forklift truck, to move and carry the switch to the rack. ·     If no mechanical lift is used, cooperate with a minimum of four people to manually lift the switch.

 

To mount the switch in a rack:

1.     Orient the chassis with its rear facing towards the front of the rack.

2.     Lift the chassis until the switch bottom is a little higher than the slide rails on the rack.

3.     Facing the front of the rack, place the switch on the slide rails and slide the switch into the rack along the slide rails until the mounting brackets are flush against the front rack posts, as shown in Figure3-15.

After placing the switch on the slide rails, do not leave go of your hands immediately because this might tip the switch, damaging the switch or even causing bodily injury.

4.     Use M6 screws provided with the switch to attach the mounting brackets to the rack posts.

The name plate on the upper right corner of the front panel covers two mounting screw holes in the mounting brackets. Screws are not needed for these two mounting holes.

If the mounting holes in the mounting brackets cannot align with the cage nuts on the rack, verify the following items:

¡     The top flange of the slide rail aligns with the middle of the narrower metal area between holes.

¡     The cage nuts are installed in the correct holes.

Figure3-15 Mounting the S12508G-AF switch in the rack

 

Grounding the switch

	CAUTION: ·     Reliably grounding the switch is crucial to lightning protection and EMI protection. Ground the switch reliably before you use it. ·     Use the grounding cable (yellow-green grounding cable) provided with the switch. ·     Connect the grounding cable to the earthing system in the equipment room. Do not connect it to a fire main or lightning rod.

 

You can ground the switch by connecting the grounding cable to a grounding strip in the equipment room or the grounding strip on the rack.

To connect the grounding cable to a grounding strip:

1.     Unpack the grounding cable.

The grounding cable provided with the switch is compliant with the NEBS standards. The two-hole grounding lug of the grounding cable is used for connecting the chassis. The ring terminal of the grounding cable is used for connecting the grounding strip.

2.     As shown by callouts 1 and 2 in Figure3-16, remove the grounding screws from the grounding holes at the rear of the chassis.

A grounding sign is provided with the grounding holes.

3.     Use grounding screws to attach the two-hole grounding lug of the grounding cable to the chassis, as shown by callouts 3 and 4 in Figure3-16.

The recommended torque for the grounding screws is 30 kgf-cm (2.94 Nm).

4.     As shown by callouts 5 and 6 in Figure3-16, connect the ring terminal of the grounding cable to a grounding post of the grounding strip, and fasten the grounding cable to the grounding strip with the hex nut.

Figure3-16 Connecting the grounding cable to a grounding strip