N68E 21 N Cabinet Installation Guide(01)(PDF) En

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N68E-21-N Cabinet Installation Guide

Issue 01

Date 2013-01-30

HUAWEI TECHNOLOGIES CO., LTD.


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Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written

consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the

customer. All or part of the products, services and features described in this document may not be within the

purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,

and recommendations in this document are provided "AS IS" without warranties, guarantees or representations

of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue 01 (2013-01-30) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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About This Document

Overview

This document describes how to install an N68E-21-N cabinet. When installing the N68E-21- N cabinet, the installation personnel need to install the cabinet, cabinet fittings.

Product Version

This document applies to all the versions of the following products: ECO6910, BSC6900, and

BSC6910.

Intended AudienceThis document is intended for the installation personnel.

Organization

1 Changes in the N68E-21-N Cabinet Installation Guide

This section describes the changes to the N68E-21-N Cabinet Installation Guide.

2 Overview of N68E-21-N Cabinets

N68E-21-N cabinets have a modular design. N68E-21-N cabinets provide sufficient space for

devices, such as subracks, to facilitate capacity expansion and maintenance.

3 Preparing for the N68E-21-N Cabinet Installation

Before installing the N68E-21-N cabinet, you need to unpack the cases and check the items in

the cases. Ensure that all the tools required for the installation are available.

4 Installing N68E-21-N Cabinets

When installing N68E-21-N cabinets, the installation personnel need to install the external power

cables, PGND cables, cabinet, and cabinet fittings. The installation personnel also need to check

the power-on status of the cabinet, and attach engineering labels to the cabinet, external power

cables, and PGND cables.

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5 Installing the N68E-21-N Cabinet on a Concrete Floor

This chapter describes how to install the N68E-21-N cabinet on a concrete floor.

6 Installing the N68E-21-N Cabinet on an ESD Floor

This chapter describes how to install the N68E-21-N cabinet on an ESD floor.

7 Installing the Accessories for the N68E-21-N Cabinet

This chapter describes how to install the front and rear doors as well as side panels for the

N68E-21-N cabinet and how to install the PGND cables for the doors and side panels.

8 Attaching the Engineering Labels to the Cabinets

This chapter describes how to attach the engineering labels, including row and column labels,

to the cabinets.

9 Checklist for the Cabinet Installation

This chapter describes the items and specifications for checking the cabinet installation.

10 Hardware Installation Record

The hardware installation record is used to record the hardware installation information.

11 Exploded View of the N68E-21-N Cabinet

This section describes the components of the N68E-21-N cabinet and the cabinet details, which

are indicated in the exploded view.

Conventions

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.


avoided, may result in minor or moderate injury.


avoided, could result in equipment damage, data loss,

performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal

injury.




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Symbol Description

Calls attention to important information, best practices and

tips.

NOTE is used to address information not related to personalinjury, equipment damage, and environment deterioration.

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are in

Courier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated by

vertical bars. A minimum of one item or a maximum of all

items can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated by

vertical bars. Several items or no item can be selected.

GUI Conventions




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The GUI conventions that may be found in this document are defined as follows.


Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK .

> Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder.

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.

Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.




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Contents

About This Document.....................................................................................................................ii

1 Changes in the N68E-21-N Cabinet Installation Guide.........................................................1

2 Overview of N68E-21-N Cabinets..............................................................................................2

3 Preparing for the N68E-21-N Cabinet Installation..................................................................4

3.1 Unpacking the Cases and Checking the Items................................................................................................................5

3.2 Tools Required for Installing the N68E-21-N Cabinet................................................................................................10

4 Installing N68E-21-N Cabinets.................................................................................................12

5 Installing the N68E-21-N Cabinet on a Concrete Floor........................................................13

5.1 Materials Required for Installing the N68E-21-N Cabinet on a Concrete Floor..........................................................14

5.2 Template Files for N68E-21-N Cabinet Installation....................................................................................................14

5.3 Positioning N68E-21-N Cabinets on a Concrete Floor................................................................................................17

5.4 Securing an N68E-21-N Cabinet to a Concrete Floor..................................................................................................23

5.5 Combining the N68E-21-N Cabinets...........................................................................................................................31

6 Installing the N68E-21-N Cabinet on an ESD Floor.............................................................34

6.1 Materials Required for Installing the N68E-21-N Cabinet on the ESD Floor.............................................................36

6.2 Template Files for N68E-21-N Cabinet Installation....................................................................................................36

6.3 Introduction to the Shockproof Support.......................................................................................................................39

6.3.1 Shockproof Support Assembly..................................................................................................................................39

6.3.2 Fastening the Lock Catches on the Shockproof Support Assembly..........................................................................40

6.3.3 Cutting Guide Rails for the Shockproof Support......................................................................................................41

6.4 Positioning N68E-21-N Cabinets on an ESD Floor.....................................................................................................44

6.5 Assembling the Shockproof Support............................................................................................................................48

6.6 Installing Floating Nuts on the Shockproof Support....................................................................................................54

6.7 Securing a Shockproof Support to a Concrete Floor....................................................................................................55

6.8 Securing an N68E-21-N Cabinet to an ESD Floor.......................................................................................................59

6.9 Combining the N68E-21-N Cabinets...........................................................................................................................67

7 Installing the Accessories for the N68E-21-N Cabinet.........................................................70

7.1 Accessories to Be Installed for the N68E-21-N Cabinet..............................................................................................71

7.2 Installing the Side Panels for the N68E-21-N Cabinet.................................................................................................71

7.3 Installing the Front and Rear Doors for the N68E-21-N Cabinet.................................................................................73

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7.4 Installing the PGND Cables for the Doors and Side Panels of the N68E-21-N Cabinet.............................................75

8 Attaching the Engineering Labels to the Cabinets...............................................................77

9 Checklist for the Cabinet Installation.....................................................................................79

10 Hardware Installation Record.................................................................................................81

11 Exploded View of the N68E-21-N Cabinet...........................................................................83

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1 Changes in the N68E-21-N CabinetInstallation Guide

This section describes the changes to the N68E-21-N Cabinet Installation Guide.

01 (2013-01-30)

Compared with Draft A (2012-07-23), this issue includes the new topic:

10 Hardware Installation Record

11 Exploded View of the N68E-21-N Cabinet

Compared with Draft A (2012-07-23), this issue does not incorporate any changes.

Compared with Draft A (2012-07-23), this issue does not exclude any topics.

Since N68E-21-N cabinets remain the same despite different versions and modes, the names of

different versions and modes are changed into N68E-21-N Cabinet Installation Guide, and the

documentation version is upgraded to 01. This document applies to all the versions of the

following products: ECO6910, BSC6900, and BSC6910.

Draft A (2012-07-23)

This is the Draft A release of V100R014C00.

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2 Overview of N68E-21-N Cabinets N68E-21-N cabinets have a modular design. N68E-21-N cabinets provide sufficient space for

devices, such as subracks, to facilitate capacity expansion and maintenance.

Exterior of an N68E-21-N Cabinet

Among the main parts of a cabinet, load-bearing parts include middle standing pillars, and door

frames. See 11 Exploded View of the N68E-21-N Cabinet. Other parts cannot bear load,

including mounting bars, front and rear doors, wooden plates on both sides of the cabinet, front

and rear wire bushings, and guide rails.

Figure 2-1 shows an N68E-21-N cabinet.

Figure 2-1 Exterior of an N68E-21-N cabinet

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Engineering Specifications of the N68E-21-N Cabinet

Table 2-1 provides the engineering specifications of the N68E-21-N cabinet.

Table 2-1 Engineering specifications of the N68E-21-N cabinet

Item Specification

Dimensions 2130 mm (height) x 600 mm (width) x 800 mm

(depth)

Height of the available space 44 U

Cabinet weight Rack:≤ 105 kg; empty cabinet:≤ 155 kg;

cabinet in full configuration:≤ 430 kg

Power supply Four routes of -48 V DC power supply

Electromagnetic compatibility (EMC) l Meets the requirements in GR 1089

l Meets the requirements in ETSI EN300 386

l Meets the requirements in Council directive

89/336/EEC

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3 Preparing for the N68E-21-N CabinetInstallation

About This Chapter

Before installing the N68E-21-N cabinet, you need to unpack the cases and check the items in

the cases. Ensure that all the tools required for the installation are available.

3.1 Unpacking the Cases and Checking the Items

This section describes how to unpack the cases and check the items in the cases to facilitate

subsequent cabinet installation.

3.2 Tools Required for Installing the N68E-21-N Cabinet

The tools required for installing the N68E-21-N cabinet are tools for measuring, marking,

drilling, and fastening, small tools, auxiliary tools, meters, and some special tools.

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3.1 Unpacking the Cases and Checking the Items

This section describes how to unpack the cases and check the items in the cases to facilitate

subsequent cabinet installation.

Prerequisites

l Site preparation for the installation is complete.

l The cases that contain the cabinets and components are delivered to the site.

Context

l When carrying or placing the equipment, you should ensure that it does not collide with

doors, walls, shelves, or other objects.

l When transporting or installing the equipment, components, or parts, you should avoidtouching their uncoated metal surfaces with sweaty or dirty gloves.

Procedure

Step 1 Unload the cases.

NOTICE

When unloading the cases, you should place the cases in sequence. Ensure that the labels on thecases face the same direction.

Step 2 Check whether the number of cases on site matches the Packing List and whether the place of delivery is the same as the actual installation place.

If... Then...

The number of cases on site matches that in the Packing List Go to Step 4.

The number of cases on site does not match that in the Packing List Go to Step 3.

Step 3 Stop unpacking the cases. Ask the project supervisor to send the Cargo Problems Report that issigned by the customer to the local Huawei office within three days.

Step 4 Check whether the cases are intact.

If... Then...

Any case is seriously damaged or soaked Go to Step 5.

The cases are intact Go to Step 6.




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Step 5 Stop unpacking the cases, find out the causes, and contact the local Huawei office to further handle the problem.

NOTICE

To protect the equipment and find out the causes, perform the following actions: Move the

unpacked equipment indoors for proper storage, take photos of the storage environment, the

rusted or corroded equipment, packing cases, and packing materials. Keep these photos for future

verification. Store the packing cases and materials properly.

Step 6 Unpack the wooden cases.

NOTICE

l Before unpacking, move the wooden cases into or close to the equipment room if enough

space is available. This prevents damage to the cabinets during the transportation.

l When you unpack the wooden cases, unpack the one containing the packing list first. Then,

you can find items rapidly according to the names, codes, positions, and quantities in the

Packing List.

l The following description takes the wooden case that contains the cabinet as an example.

The methods of unpacking other types of wooden cases are similar.

1. Place the wooden case on the ground. Ensure that the side with the wooden frame faces the bottom.

2. Use a wrench, a flat-head screwdriver, or a claw hammer to straighten the tongues on the

four sides of the cover, as shown in Figure 3-1.




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Figure 3-1 Straightening the tongue

3. Remove the cover. If the wooden case contains a carton, take out the carton and then openit according to Step 7. If the wooden case contains a cabinet, go to the next step. See Figure

3-2.

Figure 3-2 Removing the cover




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4. Use the same method to remove the side boards from the wooden case, as shown in Figure

3-3.

Figure 3-3 Removing side boards

5. Erect the cabinet with the BOTTOM side down.

NOTICEThis operation needs three to five installers. Prevent the cabinet from falling during the

erection to avoid personnel injury.

6. Remove the bottom of the case, that is, the side with the wooden frame.

7. Remove the packing foam from the corners and edges of the cabinet.

8. Remove the vacuum plastic bag.

Step 7 Unpack the carton, as shown in Figure 3-4.

Figure 3-4 Unpacking a carton

1 Carton label 2 Strap 3 Pressure-sensitive tape

4 Foam plate 5 Board label 6 Board




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1. Check the types and quantities of the items in the carton according to the carton label.

2. Use diagonal pliers to cut the straps.

3. Rip the tape along the joint seams by using the paper knife. Do not insert the knife too deep,or else the items may be damaged.

4. Unpack the carton and take out the items.

Step 8 Unpack boards.

NOTICE

l Electronic components are extremely sensitive to static electricity. When unpacking the

boards, wear an ESD wrist strap or a pair of ESD gloves properly.

l The ESD bag contains desiccant to keep the bag dry. When taking the board from a cold dry

place to a hot damp place, wait at least 30 minutes before unpacking. Otherwise, moisture

condensed on the board surface may damage the board.

1. Check that no evident damage is on the board packages.

2. Open the packages and ensure that the boards are in good condition. For any board problem,

contact the order management engineer at the local Huawei office.

Step 9 Check whether the unpacked boards need to be installed immediately, and then proceedaccordingly.

If... Then...

The unpacked boards need to be installed

immediately

Place the boards on an ESD surface and

discharge the static electricity.

The unpacked boards need not be installed

immediately

Pack the boards with the original materials and

place them in a cool dry place away from direct

sunlight or strong electromagnetic radiation.

Step 10 Check the items. Check the items one by one according to the names, types, and quantitiesdescribed in the Packing List .

The acceptance of items covers the following aspects:

l Appearance: Check whether there is any visible defect, looseness, distortion, or damage;

check whether the labels are legible and whether the nameplates and decorating plates are

available and meet the requirements.

l Integrity: Ensure that all the parts and accessories required for the installation of cabinets are

available.

l Computer: Check whether the monitor, keyboard, and mouse are intact and in good condition.

l Board: Ensure that the type and quantity of the boards are consistent with those in the Packing

List . Ensure that no printed circuit board is broken and no component is detached from the

board.




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NOTE

The project supervisor should take the major role in the inspection of equipment and components whose

electric characteristics are likely to have been affected.

If... Then...

The packing list indicates "shortage of

articles"

Inform the order management engineer at the

local office. Then, sign the Packing List together

with the customer.

There are any short, wrong, extra, or

damaged items

Representatives of Huawei and the customer

must sign the Unpacking Inspection Memo and

Packing List . The installation supervisor must fill

in the Cargo Problems Report and inform the

order management engineer at the local office in

three days. The installation supervisor must keep

the problematic items intact and the inner and

outer packing intact for future investigation and

verification.

The shipment is intact Place the inspected items by type. Then,

representatives of Huawei and the customer sign

the Packing List .

----End

3.2 Tools Required for Installing the N68E-21-N Cabinet

The tools required for installing the N68E-21-N cabinet are tools for measuring, marking,

drilling, and fastening, small tools, auxiliary tools, meters, and some special tools.

Common Tools

Table 3-1 lists the common tools required for installing the N68E-21-N cabinet.

Table 3-1 Common tools required for installing the N68E-21-N cabinet

Type Tool

Measuring tools Long tape, 50 m ribbon tape, 5 m measuring tape, 400 mm level, and level

instrument

Marking tools Marking pen, pencil

Drilling tools Percussion drill with matching bits of Ф6, Ф8, Ф10, Ф12, Ф14, and Ф16,

and vacuum cleaner




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Type Tool

Fastening tools Flat-head screwdrivers (M3 to M6)

Phillips screwdrivers (M3 to M6)

Adjustable wrench

Socket wrenches (M6, M8, M10, M12, M14, M17, M19)

Double offset ring wrenches (M6, M8, M10, M12, M14, M17, M19)

Combination wrenches (M17 and M19)

Long-arm wrench

Small tools Sharp-nose pliers, diagonal pliers, pliers, hand-held electric drill, file,

handsaw, crowbar, rubber mallet, and claw hammer

Auxiliary tools Paper knife, bellows, plumb, fork, ladder, heat gun, and PVC insulation

tape

Special Tools

The special tools required for installing the N68E-21-N cabinet are the earth resistance meter,

ESD wrist strap, ESD gloves, wire stripper, safety knife, and multi-purpose crimping tool.

Meters

The meters required for installing the N68E-21-N cabinet are the multimeter and 500 V

megohmmeter (for testing insulation resistance).

NOTE

The meters must be checked and certified.




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4 Installing N68E-21-N CabinetsWhen installing N68E-21-N cabinets, the installation personnel need to install the external power

cables, PGND cables, cabinet, and cabinet fittings. The installation personnel also need to check

the power-on status of the cabinet, and attach engineering labels to the cabinet, external power

cables, and PGND cables.

Prerequisites

l The equipment is unpacked and accepted.

l The tools required for the installation are available.

Procedure

Step 1 Install N68E-21-N cabinets.

If... Then...

N68E-21-N cabinets need to be installed on

an ESD floor

See 6 Installing the N68E-21-N Cabinet on

an ESD Floor.

N68E-21-N cabinets need to be installed on

a concrete floor

See 5 Installing the N68E-21-N Cabinet on

a Concrete Floor.

N68E-21-N cabinets need to be installed onother types of floor

Contact Huawei for technical support.

Step 2 Install cabinet fittings by referring to 7 Installing the Accessories for the N68E-21-NCabinet.

Step 3 Attach engineering labels to cabinets by referring to 8 Attaching the Engineering Labels tothe Cabinets.

----End

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5 Installing the N68E-21-N Cabinet on aConcrete Floor

About This Chapter

This chapter describes how to install the N68E-21-N cabinet on a concr ete floor.

5.1 Materials Required for Installing the N68E-21-N Cabinet on a Concrete Floor

The N68E-21-N cabinet can be directly installed on a concrete floor, so other types of materials

are not requir ed. The number of N68E-21-N cabinets to be installed depends on the actual

requirements.

5.2 Template Files for N68E-21-N Cabinet Installation

The template files for installing N68E-21-N cabinets consist of the equipment room floor plan

and marking-off template. The equipment room floor plan is used to determine the installation

positions of N68E-21-N cabinets. The marking-off template is used to determine the drilling

positions. Installing N68E-21-N cabinets on a concrete floor or on an ESD floor requires the

same template files. When installing multiple N68E-21-N cabinets, install them side by side to

ensure that the length of the SFP+ high-speed cable is sufficient.

5.3 Positioning N68E-21-N Cabinets on a Concrete Floor

Positioning N68E-21-N cabinets on a concrete floor requires the following steps: determining

the installation position, marking off the installation position, drilling holes, and installing

expansion bolt assemblies. Install N68E-21-N cabinets side by side to ensure that the length of the SFP+ high-speed cable is sufficient.

5.4 Securing an N68E-21-N Cabinet to a Concrete Floor

This section describes how to secure an N68E-21-N cabinet to a concrete floor.

5.5 Combining the N68E-21-N Cabinets

This section describes how to combine multiple N68E-21-N cabinets.

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5.1 Materials Required for Installing the N68E-21-N Cabinet

on a Concrete FloorThe N68E-21-N cabinet can be directly installed on a concrete floor, so other types of materials

are not required. The number of N68E-21-N cabinets to be installed depends on the actual

requirements.








Equipment Room Floor Plan

The equipment room floor plan is provided by the customer or engineering survey personnel.

Figure 5-1 shows an example of the equipment room floor plan.




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Figure 5-1 An example of the equipment room floor plan (unit: mm)




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NOTE

As shown in Figure 5-1, the installation positions of N68E-21-N cabinets meet the following requirements:

l The clearance between two rows of cabinets is at least 1000 mm.

l The clearance between a wall and the side panel that is the closest to the wall i at least 800 mm.

l The clearance between a wall and the cabinet front or rear that is the closest to the wall is at least 800

mm.

l The width of aisles in the equipment room is at least 1000 mm.

Marking-off Template

The marking-off template is delivered with N68E-21-N cabinets. Figure 5-2 shows an example

of the marking-off template.

Figure 5-2 An example of the marking-off template (unit: mm)




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5.3 Positioning N68E-21-N Cabinets on a Concrete Floor

Positioning N68E-21-N cabinets on a concrete floor requires the following steps: determiningthe installation position, marking off the installation position, drilling holes, and installing

expansion bolt assemblies. Install N68E-21-N cabinets side by side to ensure that the length of

the SFP+ high-speed cable is sufficient.

Prerequisites

l The M12x102 expansion bolt assemblies are available.

l The equipment room floor plan and marking-off template are available.

l The following tools are available: a measuring tape, marker, hammer drill with Ф16 and

Ф18 bits, vacuum cleaner, dustproof cover for electronic equipment, socket wrench, a

rubber mallet, and safety goggles.

Procedure

Step 1 Ensure that the equipment room floor plan meets the requirements for installing N68E-21-Ncabinets by referring to 5.2 Template Files for N68E-21-N Cabinet Installation.

Step 2 Use a measuring tape to determine the cabinet positions based on the dimensions specified inthe equipment room floor plan.

Step 3 Determine the positions of the the holes for installing the expansion bolt assemblies.

Use either a marking-off template or a measuring tape to determine the positions of holes for installing the expansion bolt assemblies. The marking-off template is made of paper and is prone

to deformation. Before using the marking-off template, check whether it is deformed based on

the dimensions of the marking-off template specified in 5.2 Template Files for N68E-21-N

Cabinet Installation.

If... Then...

A marking-off template is delivered onsite

and is not deformed

Use the marking-off template to determine

the positions of the holes for installing the

expansion bolt assemblies. For detailed

operations, see Step 4.

Under other circumstances Use a measuring tape to determine the

positions of the holes for installing the

expansion bolt assemblies. For detailed

operations, see Step 5.

Step 4 Use the marking-off template to determine the positions of the holes for installing the expansion bolt assemblies.

1. As shown in Figure 5-3 or Figure 5-4, use the measuring tape and marker to measure and

mark the start point for the front of each row of cabinets. From each start point, draw a

benchmark line in the direction that cabinets are to be arranged.




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2. Place the marking-off template on the floor. Ensure that the semicircle notch of the marking-

off template indicates the front of the cabinet and one edge of the marking-off template

aligns with the benchmark line.

3. Mark the positions of holes for installing expansion bolt assemblies. Each cabinet requires

four expansion bolt assemblies.4. After marking the holes, measure the positions again to ensure correctness.

5. Go to Step 6.

Step 5 Use the measuring tape to determine the positions of the holes for installing the expansion boltassemblies.

1. As shown in Figure 5-3 or Figure 5-4, use the measuring tape and marker to measure and

draw two straight lines parallel to the front of the cabinet. The spacing between the two

straight lines is 408 mm.

Figure 5-3 Holes for installing one cabinet (unit: mm)




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Figure 5-4 Holes for installing a row of cabinets (unit: mm)

NOTICE

Ensure that each line is accurately drawn, because imprecise line may hamper the

installation.

2. As shown in Figure 5-3 or Figure 5-4, determine the position of the hole for installing the

first expansion bolt assembly on each straight line. Using this position as a reference, mark

the holes for installing the other expansion bolt assemblies.

3. After marking the holes, measure the positions again to ensure correctness.

Step 6 Drill the holes.




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NOTE

Ensure that all the holes are drilled at their correct positions, because imprecise hole drilling may hamper

the installation.

l Before drilling the holes, ensure that the positions of the holes are correct based on Figure 5-4 or

Figure 5-5.

l Ask architectural engineers whether drilling into the concrete floor is permissible before drilling holes.

l The concrete floor should not be fully penetrated. Therefore, you should confirm the thickness of the

concrete floor before drilling any holes. If the concrete floor is not thick enough to hold the selected

expansion bolt assemblies, replace them.

l Protect the electronic equipment from dust before drilling the holes. For example, cover the electronic

equipment.

l Use a vacuum cleaner to remove the dust when drilling the holes. Before removing the dustproof cover

from the electronic equipment, remove particles and other waste that have accumulated when drilling

the holes.

l Wear safety goggles when drilling the holes.

1. Use a chisel to dig a pit to help hold the drill bit to the floor, as shown in Figure 5-5.

Figure 5-5 Using a chisel to dig a pit

NOTE

If the ground is too hard or slippery to position the drill bit stably, use a chisel to dig a pit before

drilling the holes. If a reinforcing steel bar is found where the hole is being drilled, stop drilling the

hole and drill another one a little inward along the diagonal.

2. Use the Ф16 bit and the scaleplate on the hammer drill to ensure that the drilling depth

ranges from 85 mm to 90 mm, as shown in Figure 5-6.




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Figure 5-6 Drilling holes

NOTE

The drilling depth must not be less than 85 mm or more than 90 mm. Otherwise, the expansion bolt

assemblies cannot be installed and fastened.

3. Align the drill bit upright to the drilling position. Use both hands to hold the drill firmly,

and drill a hole. Use a vacuum cleaner to remove the dust when drilling the holes.

NOTE


drilling the holes. If a reinforcing steel bar is found where the hole is drilled, stop drilling and drill

another one a little inward along the diagonal.

4. Remove the dust in the hole, measure its depth, and check whether the hole is slanted. If

the depth is insufficient or the hole is slanted, continue drilling. If the hole cannot becorrected, stop drilling the hole.

5. Replace the Φ16 bit with the Φ18 bit, and then drill the hole until its diameter meets the

requirement.

NOTE

If the hole cannot be corrected, stop drilling and drill another one.

Step 7 Install expansion bolt assemblies. Figure 5-7 shows an expansion bolt assembly.




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Figure 5-7 An expansion bolt assembly

(1) Bolt (2) Flat washer (3) Steel tube

4. Plastic tube (5) Expansion tube (6) Conical nut

1. Use the vacuum cleaner to remove the dust inside and outside the holes.

2. Measure the distance between holes. If the difference between the actual distance and the

required distance is larger than 2 mm, position and drill new holes.

3. Insert the guiding rib on the nut into the guide trough on the expansion tube, and tighten

the bolt slightly to ensure that the guiding rib does not move out from the guide trough, asshown by 1 in Figure 5-8.

4. Insert the expansion bolt assembly into the hole, and hit the expansion bolt with a rubber

mallet until the entire expansion tube fills the hole, as shown by 2 in Figure 5-8.

Figure 5-8 Installing an expansion bolt assembly (1)

5. Pre-tighten the expansion bolt clockwise so that the nut and the expansion tube do not come

loose easily, as shown by 1 in Figure 5-9.

6. Unscrew the expansion bolt counterclockwise and remove the spring washer and flat

washer, as shown by 2 in Figure 5-9. Keep them for future use.




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Figure 5-9 Installing an expansion bolt assembly (2)

----End

Follow-up Procedure

Record the positioning result in the corresponding table provided in 10 Hardware Installation

Record.

5.4 Securing an N68E-21-N Cabinet to a Concrete Floor

This section describes how to secure an N68E-21-N cabinet to a concrete floor.

Prerequisites

l The N68E-21-N cabinet is available.

l The following materials are available: insulation plates, flat washers 12, spring washers 12,

pads (optional), and expansion bolt assemblies.

l The following tools are available: a multimeter, level, and torque wrench.

Context

NOTICE

The cabinet has a high center of gravity. Therefore, do not lift or push the cabinet alone. Moving

a cabinet requires at least two people and a pallet truck to ensure personnel safety and prevent

equipment damage.

Procedure

Step 1 Remove the protection covers from the front and rear of the cabinet.




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Step 2 Remove the metal packing accessories from the cabinet columns, as shown in Figure 5-10.

Figure 5-10 Removing the metal packing accessories

Step 3 Optional: (When BSC6900 series controllers are used) Remove the subrack at the bottom of the cabinet and keep for subsequent installation.

NOTE

The components installed in the bottom 5 U (1 U = 44.45 mm) space of the cabinet hampers the cabinet

installation. Therefore, remove them before installing the cabinet and reinstall them after the cabinet has

been installed.

1. At the rear of the subrack, remove the M3 screw on the right side of the plastic cover of

the power cable terminal, and loosen the M3 screw on the left side. Do not remove the M3

screw on the left side. Figure 5-11 shows the rear view of a subrack.




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Figure 5-11 Rear view of a subrack

(1) PDB monitoring cable (2) Power cables (3) PGND cables

(4) Plastic cover (5) M3 screw (6) subrack

2. Remove the power cables from the rear of the subrack. Figure 5-11 shows the positions of

the power cables.

NOTICEWhen removing cables from the rear of the subrack, record the cable connections for future

reinstallations.

3. Remove the PGND cables and PDB monitoring cable from the rear of the subrack. Figure

5-11 shows the positions of the cables.

4. Use the cable ties to bind these cables to the mounting bars, and properly store the screws

and nuts for future use.

5. Use the Phillips screwdriver to remove all eight M6x12 screws that attach the subrack to

the front of the cabinet, and keep them for future use.




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NOTICE

Five people are required to remove the subrack. Ensure personnel safety.

6. One people pushes the subrack out along the guide rail from the rear of the cabinet. The

other four people hold the mounting ears and the bottom of the subrack to pull the subrack

out of the cabinet from the front.

7. Keep the subrack for future use.

Step 4 Optional: (When BSC6910 series controllers are used) Remove the air defence subrack and thesubrack at the bottom of the cabinet and keep for subsequent installation.

NOTE

The components installed in the bottom 5 U (1 U = 44.45 mm) space of the cabinet hampers the cabinet

installation. Therefore, remove them before installing the cabinet and reinstall them after the cabinet has

been installed.

1. Remove the clock cables, SFP+ high-speed cables, and Ethernet cables from the boards in

the subrack.

NOTICEWhen removing cables from the rear of the subrack, record the cable connections for future

reinstallations.

2. Remove the PGND cables from the rear of the subrack. Figure 5-12 shows the positionsof the cables.

Figure 5-12 PGND cables at the rear of the subrack

3. Use the cable ties to bind these cables to the mounting bars, and properly store the screws

and nuts for future use.

4. Use the Phillips screwdriver to remove all eight M6x12 screws that attach the subrack to

the front of the cabinet, and keep them for future use.




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NOTICE

Five people are required to remove the subrack. Ensure personnel safety.

5. One people pushes the subrack out along the guide rail from the rear of the cabinet. The

other four people hold the mounting ears and the bottom of the subrack to pull the subrack

out of the cabinet from the front.

6. Remove the air defence subrack under the subrack.

7. Keep the subrack and air defence subrack for future use.

Step 5 Lay two insulation plates for each cabinet on the floor, as shown in Figure 5-13.




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Figure 5-13 Installing the N68E-21-N cabinet on the concrete floor

(1) Bolt (2) Spring washer 12 (3) Flat washer

(4) Plain washer (5) Insulation tube (6) Steel tube

(7) Installation hole for the cabinet (8) Insulation plate (9) Pad (optional)




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Step 6 Place the cabinet in the planned position. Align the installation holes at the bottom of the cabinetwith the holes for installing the expansion bolt assemblies.

Step 7 Use the level to check the cabinet. If the cabinet is not level, adjust it by inserting pads betweenthe insulation plate and the floor, as shown in Figure 5-13.

NOTICE

The pads must be inserted between the insulation plate and the floor. If they are inserted between

the insulation plate and the cabinet, the cabinet cannot be insulated.

Step 8 As shown in Figure 5-13, place the steel tube, insulation tube, and plain washer over the

installation hole. Ensure that the convex surface of the insulation tube faces downwards.

Step 9 Place the bold through the spring washer 12 and flat washer, and insert the bolt into the steeltube, as shown in Figure 5-13.

Step 10 Tighten the four expansion bolt assemblies in a diagonal sequence to 80 N•m (708.06 lbf.in.).

Step 11 Level the cabinet. Use a level to check the levelness of the cabinet. If the cabinet is not level,use a M12 socket wrench to adjust the anchor bolt (adjustable range: 0-10 mm) of the cabinet

and ensure that the cabinet is level.

Step 12 Measure the resistance between the fixing bolt of the cabinet and the ground bolt at the bottomof the cabinet.

1. Set the multimeter to the megohm scale.

2. Measure the resistance between the fixing bolt of the rack and the ground bolt at the bottom

of the rack, as shown in Figure 5-14.




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Figure 5-14 Measuring the resistance

(1) Resistance tester (2) Fixing bolt (3) Ground bolt at the bottom of the rack

If... Then...

The resistance is greater than or equal to

five megohms

(When BSC6900 series controllers are used)

The cabinet is insulated from the ground. Go

to Step 17.

(When BSC6910 series controllers are used)

The cabinet is insulated from the ground. Go

to Step 18.

The resistance is less than five megohms The cabinet is not insulated from the ground.

Go to Step 13.

Step 13 Remove the cabinet.

Step 14 Check whether the improper insulation of the cabinet is caused by missing or damaged insulation parts.

The insulation parts of the cabinet are the insulation plates and insulation tubes.

Step 15 Secure the cabinet again.

Step 16 Repeat the insulation test by following the instructions in Step 12 until the resistance is greater than or equal to five megohms.

Step 17Optional: (When BSC6900 series controllers are used) Reinstall the removed and subrack in

the cabinet.




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1. Two people hold the mounting ears of the subrack and the bottom of the subrack, and slide

the subrack into the cabinet along the guide rail. Use the eight M6x12 screws to attach the

subrack to the cabinet.

2. At the rear of the cabinet, connect the PGND cables, power cables, and PDB monitoring

cable and then reinstall the two plastic covers, as shown in Figure 5-11.

Step 18 Optional: (When BSC6910 series controllers are used) Reinstall the removed air defencesubrack and subrack in the cabinet.

1. Two people hold the mounting ears of the subrack and the bottom of the subrack, and slide

the subrack into the cabinet along the guide rail. Use the eight M6x12 screws to attach the

subrack to the cabinet.

2. At the rear of the cabinet, connect the PGND cables.

----End

Follow-up ProcedureRecord the installation result in the corresponding table provided in 10 Hardware Installation

Record.



Prerequisites

For the installation, wrench and climbing ladder tools are available.

Context

Combining the cabinets is accomplished using connecting plates that connect the adjacent

cabinets after the cabinet installation. The connecting plates, which ensure that the cabinets are

upright, are already installed on the top of the cabinets at delivery.

NOTE

The cabinets cannot be installed back to back. When multiple cabinets are combined, they should be

installed side by side.

Figure 5-15 and Figure 5-16 show how to fix the connecting plates to combine cabinets.




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Figure 5-15 Installing connecting plates on the top of two adjacent cabinets




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Figure 5-16 Installing connecting plates on the door heads of two adjacent cabinets

Procedure

Step 1 Reach the top of the cabinet using a climbing ladder.

Step 2 Install the connecting plates on the top of two adjacent cabinets, as shown in Figure 5-15.

Step 3 Install the connecting plates on the door heads of two adjacent cabinets, as shown in Figure5-16.

Step 4 Ensure that the horizontal and vertical deviation of the cabinets is within specifications.

Step 5 Ensure that all of the cabinets are at the same level and stand side by side closely.

----End

Follow-up Procedure

Record the operation result in the corresponding table provided in 10 Hardware Installation

Record.




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6 Installing the N68E-21-N Cabinet on an ESDFloor

About This Chapter

This chapter describes how to install the N68E-21-N cabinet on an ESD floor.

6.1 Materials Required for Installing the N68E-21-N Cabinet on the ESD Floor

This section describes the materials required for installing the N68E-21-N cabinet on the ESD

floor. The required materials are the N68E-21-N cabinet and shockproof support assembly.


The template files for installing N68E-21-N cabinets consist of the equipment room floor planand marking-off template. The equipment room floor plan is used to determine the installation





6.3 Introduction to the Shockproof Support

This section describes the shockproof support, which is made of several components and needs

to be assembled on site.

6.4 Positioning N68E-21-N Cabinets on an ESD Floor

Positioning N68E-21-N cabinets on an ESD floor requires the following steps: determining

installation positions, marking off installation positions, and drilling holes. Install N68E-21-N

cabinets side by side to ensure that the length of the SFP+ high-speed cable is sufficient.

6.5 Assembling the Shockproof Support

This section describes how to assemble the shockproof support. The methods of assembling the

shockproof support are similar in the scenarios of combining an even number of cabinets in a

row, combining an odd number of cabinets in a row, and installing a single cabinet. The following

takes a single cabinet as an example to describe how to assemble the shockproof support.

6.6 Installing Floating Nuts on the Shockproof Support

After the shockproof support is assembled, the floating nuts must be installed to fix the N68E-21-

N cabinet on the shockproof support.

6.7 Securing a Shockproof Support to a Concrete Floor

N68E-21-N Cabinet Installation Guide 6 Installing the N68E-21-N Cabinet on an ESD Floor



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This section describes how to drill holes, install expansion bolt assemblies, and secure a

shockproof support to a concrete floor.

6.8 Securing an N68E-21-N Cabinet to an ESD Floor

This section describes how to secure an N68E-21-N cabinet to an ESD floor.






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6.1 Materials Required for Installing the N68E-21-N Cabinet

on the ESD FloorThis section describes the materials required for installing the N68E-21-N cabinet on the ESD

floor. The required materials are the N68E-21-N cabinet and shockproof support assembly.

Table 6-1 lists the materials required for installing the N68E-21-N cabinet on the ESD floor.

Table 6-1 Materials

Name Sub-Item

Quantity Remarks

Shockproof

supportassembly

Support N+1, for N

cabinets

The support needs to be assembled on site.

For the ESD floors of different heights (H),the installation of the supports is of the

following types:

l For H≥ 325 mm, no special processing

is required. This height is presented as an

example in this section.

l For 205 mm≤ H < 325 mm, the

installation method is the same as that

used when H≥ 325 mm but the support

needs to be customized.

l For H < 205 mm, the installation method

is different from that used in the previous

two scenarios and the support needs to be

customized.

Guide rail N, for N

cabinets

Each guide rail is 1,200 mm long. It needs

to be cut as required.

N68E-21-N

cabinet

- Depends on

the site

requirements

-











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Equipment Room Floor Plan

The equipment room floor plan is provided by the customer or engineering survey personnel.

Figure 6-1 shows an example of the equipment room floor plan.

Figure 6-1 An example of the equipment room floor plan (unit: mm)




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NOTE

As shown in Figure 6-1, the installation positions of N68E-21-N cabinets meet the following requirements:

l The clearance between two rows of cabinets is at least 1000 mm.

l The clearance between a wall and the side panel that is the closest to the wall i at least 800 mm.

l The clearance between a wall and the cabinet front or rear that is the closest to the wall is at least 800

mm.

l The width of aisles in the equipment room is at least 1000 mm.

Marking-off Template

The marking-off template is delivered with N68E-21-N cabinets. Figure 6-2 shows an example

of the marking-off template.

Figure 6-2 An example of the marking-off template (unit: mm)




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6.3 Introduction to the Shockproof Support

This section describes the shockproof support, which is made of several components and needsto be assembled on site.

6.3.1 Shockproof Support Assembly

This section describes the components of the shockproof support assembly.The components are

the horizontal beam/guide rail, lock catch, column connector, floating nut, column, base, angle

bracket, and expansion bolt.

Table 6-2 illustrates the components of the shockproof support assembly.

Table 6-2 Components of the shockproof support assembly

Horizontal beam/guide rail Column

Lock catch

Base

Column connector

Angle bracket




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Floating nut

Expansion bolt

NOTE

l The horizontal beam/guide rail, column, base, column connector, and angle bracket are the main

components of the shockproof support assembly.

l The lock catch is used to secure the components.

l The floating nut is used to secure the cabinet on the guide rail.There are teeth on the floating nut.

Pre-tightening is implemented through the meshing of the teeth on the floating nut and the teeth on

the guide rail, and with the aid of the spring of the plastic pad on the floating nut.

l The expansion bolt is used to fix the support on the concrete floor.

6.3.2 Fastening the Lock Catches on the Shockproof SupportAssembly

This section describes how to fasten the lock catches on the shockproof support assembly.

Context

Lock catches are used to connect all the components of the shockproof support assembly. Both

the lock catch and the U-steel (horizontal beam/guide rail/column) have teeth. When the

components are assembled, mesh the teeth of the lock catch and the components to pre-tighten

them, as shown in Figure 6-3. The tightened support is shockproof.

Figure 6-3 Teeth of the U-steel and lock catch




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Procedure

Step 1 Pre-tighten the lock catch. Press the bolt of the lock catch whereas turning the bolt to 90 degreesclockwise. With the rotation of the bolt, the nut also rotates 90 degrees. Then, the two pieces are

pre-tightened, as shown in Figure 6-4.

Figure 6-4 Tightening the lock catch

1 M10 bolt 2 Washer 3 Nut

Step 2 Tighten the lock catch. Use a socket wrench to tighten the bolt to 40 N•m clockwise.

----End

6.3.3 Cutting Guide Rails for the Shockproof Support

Before assembling the shockproof support, you should cut the guide rails according to the type

of the combined cabinets. According to the number of combined cabinets, there are three types:

an even number of cabinets combined in a row, an odd number of cabinets combined in a row,

and a single cabinet installed. If the guide rails on site are already cut, skip this procedure.

Prerequisitesl The materials required for the cutting are available. The required materials are the guide

rails.

l The tools required for the cutting are available. The required tools are the measuring tape,

file, sandpaper, and metal cutter.

Context

The guide rail is 1,200 mm long and the cabinet is 600 mm wide. Therefore,

l For combining an even number of cabinets in a row, it is not necessary to cut the guide rail.

Figure 6-5 shows the guide rails for combining an even number of cabinets in a row.




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Figure 6-5 Guide rails for combining an even number of cabinets in a row

l To combine an odd number of cabinets in a row, cut a 1,200 mm long guide rail into two

600 mm long guide rails. Figure 6-6 shows the guide rails for combining an odd number

of cabinets in a row.

Figure 6-6 Guide rails for combining an odd number of cabinets in a row

l To install a single cabinet, cut a 1,200 mm long guide rail into two 600 mm long guide

rails. Figure 6-7 shows the guide rails for installing a single cabinet.




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Figure 6-7 Guide rails for installing a single cabinet

NOTICE

In underfloor cabling mode, the guide rail may block part of the cabling space. Therefore, for installations using underfloor cabling with a large number of cables, ensure beforehand that the

guide rails will not affect the cabling.

Procedure

Step 1 Choose a scheme of cutting the guide rails according to the type of the combined cabinets.

If... Then...

An odd number of cabinets are combined in a row or

a single cabinet is installed,

Go to Step 2.

An even number of cabinets are combined in a row, Cutting guide rails is unnecessary.

Step 2 Use the metal cutter to cut a 1,200 mm long guide rail into two 600 mm long guide rails.

Step 3 Use the file or sandpaper to smooth the cut surfaces of the guide rails.

Step 4 Apply antirust paint on the cut surfaces.

----End




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Figure 6-9 Holes for installing a row of cabinets (unit: mm)

NOTICE

Ensure that each line is accurately drawn, because imprecise line may hamper the

installation.

2. As shown in Figure 6-8 or Figure 6-9, determine the position of the hole for installing the

first bolt on each straight line. Using this position as a reference, mark the holes for installing

the other bolts.

3. After marking the holes, measure the positions again to ensure correctness.

Step 6 Drill the holes.




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NOTE


the installation.

l Before drilling the holes, ensure that the positions of the holes are correct according to Figure 6-8 or

Figure 6-9.

l Protect the electronic equipment in the equipment room from dust before drilling the holes. For

example, cover the electronic equipment.

l Use a vacuum cleaner to clean up the dust when drilling the holes. Before uncovering the electronic

equipment, remove particles and other waste that that have accumulated when drilling the holes.


1. Use the Ф14 bit and the scaleplate on the hammer drill to ensure that the drilling depth is

slightly larger than the thickness of the ESD floor, as shown in Figure 6-10.


2. Align the drill bit upright to the drilling position. Use both hands to hold the drill firmly,

and drill a hole. Use a vacuum cleaner to remove the dust when drilling the holes.

3. Remove the dust in the hole, measure its depth, and check whether the hole is slanted. If

the depth of the hole is insufficient or the hole is slanted, continue drilling. If the hole cannot

be corrected, stop drilling and drill another one.

Step 7 Cut the ESD floor. Use a panel lifter to move the ESD floor to be cut and cut a part off the ESDfloor to facilitate cabling. Figure 6-11 shows the positions for cutting the ESD floor.




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Figure 6-11 Positions for cutting the ESD floor (unit: mm)

NOTICE

When doing the cutting, wear a pair of gloves to prevent injury.

Step 8 Remove the ESD floor supports from the area where cabinets are to be installed.

----End

Follow-up Procedure

Clean up the installation area for future installations.

6.5 Assembling the Shockproof Support

This section describes how to assemble the shockproof support. The methods of assembling the

shockproof support are similar in the scenarios of combining an even number of cabinets in a

row, combining an odd number of cabinets in a row, and installing a single cabinet. The following

takes a single cabinet as an example to describe how to assemble the shockproof support.




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Figure 6-13 Installing the column connectors

Step 4 Place the two guide rails onto the column connectors. Pre-tighten the guide rails to the column

connectors by using the lock catches. Adjust the positions of the bases and ensure that each guiderail projects 10-15 mm beyond both sides of the column. See Figure 6-14.




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Figure 6-14 Installing the guide rails

Step 5 Pre-tighten each angle bracket to the corresponding column by using two lock catches. Ensure

that the top surface of the angle brackets and the top surface of the columns are at the same level.Four angle brackets need to be pre-tightened, as shown in Figure 6-15.




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Figure 6-15 Installing the angle brackets

Step 6 Place two horizontal beams onto the columns. Ensure that the beams are in close contact withthe corresponding angle brackets. Adjust the positions of the columns. Ensure that the distance

between the two guide rails is 457.5 mm. Pre-tighten the horizontal beam and the corresponding

angle bracket by using two lock catches.

Step 7Adjust the height of the columns. Ensure that the height of the support is 3-5 mm greater than

the distance between the concrete floor and the lower surface of the ESD floor.

Step 8 Adjust the positions of the horizontal beams and guide rails. Ensure that they are at the samelevel. The distance between the two guide rails should be 457.5±0.5 mm.

Step 9 Tighten all the lock catches to 40 N•m.

Step 10 Check whether the column connectors need to be cut.




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If... Then...

The column connectors are already cut to

the proper length,

The assembling of the shockproof support is

complete.

The column connectors are not cut and the

cutting tool is unavailable on site,

1. Loosen some of the lock catches.

2. Move the columns inward along the guide

rails until the columns are aligned with the

ends of the guide rails.

3. Tighten all the lock catches.

The assembling of the shockproof support is

complete.

There is another situation, Go to Step 11.

NOTICE

When doing the cutting, wear a pair of gloves to prevent injury.

Step 11 Use the metal cutter to cut the column connectors that project beyond the guide rails. Figure6-16 shows the assembled support.

Figure 6-16 Assembled support (unit: mm)




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NOTICE

After cutting the column connectors, smooth the cut surfaces and brush antirust paint on the

cross section.

----End

6.6 Installing Floating Nuts on the Shockproof Support

After the shockproof support is assembled, the floating nuts must be installed to fix the N68E-21-

N cabinet on the shockproof support.

Prerequisites

l The shockproof support is assembled.

l For the installation, the torque wrench and rubber mallet are available.

Procedure

Step 1 Place the assembled support under the ESD floor and loosen the lock catches that connect the bases and the columns.

Step 2 Put the ESD floor back to the original position on the floor framework and use a rubber malletto hammer the ESD floor. Ensure that the top surface of the support clings to the ESD floor.

Step 3 Tighten the lock catches that connect the bases and the columns to 40 N•m.

Step 4 Remove the ESD floor.

Step 5 Install four floating nuts at both ends of the two guide rails. Ensure that the floating nuts aresymmetrical around the center of the support. The positions of the floating nuts are shown in

Figure 6-17.




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Figure 6-17 Installing floating nuts (unit: mm)

NOTE

l There are teeth on the floating nut. Pre-tightening is implemented through the meshing of the teeth on

the floating nut and the teeth on the guide rail, and with the aid of the spring of the plastic pad on the

floating nut.

l If you want to move a floating nut, press the plastic pad and meanwhereas move the floating nut along

the guide rail.

----End

6.7 Securing a Shockproof Support to a Concrete Floor

This section describes how to drill holes, install expansion bolt assemblies, and secure a

shockproof support to a concrete floor.

Prerequisitesl The shockproof support to be installed is available.

l The M8×75 expansion bolt assemblies are available.

l The equipment room floor plan is available.

l The following tools are available: a socket wrench, measuring tape, panel lifter, marker,

hammer drill with a Ф12 bit, vacuum cleaner, dustproof cover for electronic equipment,

rubber mallet, and safety goggles.

Procedure

Step 1Place the removed ESD floor on the assembled shockproof support. Align the installation holes

on the ESD floor with the floating nuts.




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Step 2 Use a marker to mark the holes for installing the base, as shown in Figure 6-18.

Figure 6-18 Holes installing for the base

(1) ESD floor (2) Installation hole aligned with the floating nut (3) Hole for installing the base

Step 3 Remove the ESD floor and the shockproof support and mark the holes for drilling on the concretefloor.

NOTE


the installation.

l Ask architectural engineers whether drilling into the concrete floor is permissible before drilling holes.

l The concrete floor should not be fully penetrated. Therefore, you should confirm the thickness of the

concrete floor before drilling any holes. If the concrete floor is not thick enough to hold the selected

expansion bolt assemblies, replace them.

l Protect the electronic equipment from dust before drilling the holes. For example, cover the electronic

equipment with dustproof cover.

l Use a vacuum cleaner to remove the dust when drilling the holes.

l Before removing the dustproof cover from the electronic equipment, remove particles and other waste

that have accumulated when drilling the holes.


1. Use a chisel to dig a pit to help hold the drill bit to the floor, as shown in Figure 6-19.




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Figure 6-19 Using a chisel to dig a pit

NOTE


drilling the holes. If a reinforcing steel bar is found where the hole is being drilled, stop drilling the

hole and drill another one a little inward along the diagonal.

2. Fasten the Ф12 bit onto the hammer drill.

3. Use the scaleplate on the hammer drill to ensure that the drilling depth ranges from 70 mm

to 75 mm, as shown in Figure 6-20.


NOTE

The drilling depth must not be less than 70 mm or more than 75 mm. Otherwise, the expansion bolt

assemblies cannot be installed and fastened.

4. Align the drill bit upright to the marked holes to install the support. Use both hands to hold

the drill firmly, and drill a hole. Use a vacuum cleaner to remove the dust when drilling the

holes.

5. Measure the depth of a hole. If the depth is insufficient, continue to drill the hole.

6. Check whether the hole is slanted. If it is, drill the hole again.

Step 4 Install the expansion bolt assemblies. Figure 6-21 shows an expansion bolt assembly.




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Documents

N68E 21 N Cabinet Installation Guide(01)(PDF) En