H3C MSR 900 Series Installation guide

Brand: H3C

Model: MSR 900 Series

Type: Installation guide

This manual is also suitable for

MSR 20-1X

H3C MSR 20-1X Routers

Installation Guide

Hangzhou H3C Technologies Co., Ltd.

http://www.h3c.com

Document version: 20101217-C-1.04

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

written consent of Hangzhou H3C Technologies Co., Ltd.

Trademarks

H3C,

, Aolynk, , H

Care,

, TOP G, , IRF, NetPilot, Neocean, NeoVTL,

SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG, V

G, V

G, PSPT,

XGbus, N-Bus, TiGem, InnoVision and HUASAN are trademarks of Hangzhou H3C Technologies Co.,

Ltd.

All other trademarks that may be mentioned in this manual are the property of their respective owners

Notice

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 the warranty of any kind, express or implied.

Environmental protection

This product has been designed to comply with the environmental protection requirements. The storage,

use, and disposal of this product must meet the applicable national laws and regulations.

Preface

The H3C MSR 20-1X Routers Installation Guide describes how to install the H3C MSR 20-1X Routers,

maintain software and hardware of the router, and solve problems you may encounter during the

installation process.

This preface includes:

•

Audience

•

Conventions

•

About the H3C MSR documentation set

•

Obtaining documentation

•

Technical support

•

Documentation feedback

Audience

This documentation is intended for:

• Network planners

• Field technical support and servicing engineers

• Network administrators working with the MSR Series

Conventions

This section describes the conventions used in this documentation set.

Symbols

Convention Description

WARNING

An alert that calls attention to important information that if not understood or followed can

result in personal injury.

CAUTION

An alert that calls attention to important information that if not understood or followed can

result in data loss, data corruption, or damage to hardware or software.

IMPORTANT

An alert that calls attention to essential information.

NOTE

An alert that contains additional or supplementary information.

TIP

An alert that provides helpful information.

Network topology icons

Represents a generic network device, such as a router, switch, or firewall.

Represents a routing-capable device, such as a router or Layer 3 switch.

Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports

Layer 2 forwarding and other Layer 2 features.

About the H3C MSR documentation set

The H3C MSR documentation set includes:

Category Documents Purposes

MSR 900 Routers Marketing

brochures

MSR 20-1X Routers Marketing

brochures

MSR 20-2X[40] Routers Marketing

brochures

MSR 30 Routers Marketing brochures

Product description and

specifications

MSR 50-40[60] Routers Marketing

brochures

Describe product specifications and

benefits.

MSR 900 Routers Installation guide

MSR 20-1X Routers Installation guide

MSR 20-2X[40] Routers Installation

guide

MSR 30 Routers Installation guide

MSR 50 Routers Installation guide

Hardware specifications

and installation

MSR Series Routers Interface Module

Manual

Provides a complete guide to hardware

installation and hardware

specifications.

MSR Series Routers Configuration

guides

Describe software features and

configuration procedures.

MSR Series Routers Command

references

Provide a quick reference to all

available commands.

Software configuration

MSR Series Routers Web

Configuration guides

Describe Web software features and

configuration procedures.

MSR Basic Series Routers Release

notes

Operations and

maintenance

MSR Standard Series Routers Release

notes

Provide information about the product

release, including the version history,

hardware and software compatibility

matrix, version upgrade information,

technical support information, and

software upgrading.

Obtaining documentation

You can access the most up-to-date H3C product documentation on the World Wide Web at

http://www.h3c.com.

Click the links on the top navigation bar to obtain different categories of product documentation:

[Technical Support & Documents > Technical Documents] – Provides hardware installation, software

upgrading, and software feature configuration and maintenance documentation.

[Products & Solutions] – Provides information about products and technologies, as well as solutions.

[Technical Support & Documents > Software Download] – Provides the documentation released with the

software version.

Technical support

customer_service@h3c.com

http://www.h3c.com

Documentation feedback

You can e-mail your comments about product documentation to [email protected].

We appreciate your comments.

Contents

Overview ······································································································································································ 1

Introduction ········································································································································································1

Physical Description of the MSR 20-1X Routers·············································································································1

Hardware Specifications ·········································································································································1

MSR 20-10 Router····················································································································································3

MSR 20-11 Router····················································································································································4

MSR 20-12 Router····················································································································································6

MSR 20-13 Router····················································································································································8

MSR 20-15 Router················································································································································· 10

Generic Modules···························································································································································· 11

SICs and DSICs ····················································································································································· 12

Installation Preparations ············································································································································13

Requirements on Environment······································································································································· 13

Requirements on Temperature and Humidity ····································································································· 13

Requirements on Cleanness·································································································································· 13

Requirements on Electrostatic Discharge Prevention·························································································· 14

Requirements on Electromagnetic Environment·································································································· 14

Requirements on Lightning Protection·················································································································· 14

Checking the Rack················································································································································· 15

Safety Precautions·························································································································································· 15

Installation Tools, Meters and Equipment···················································································································· 15

Installation···································································································································································17

Installation Flowchart ····················································································································································· 17

Installing the Cabinet ····················································································································································· 17

Installing the Router························································································································································ 17

Installing the Router on a Workbench················································································································· 18

Installing the Router on a Cabinet ······················································································································· 18

Installing the Router on a Wall ···························································································································· 19

Installing Generic Modules ··········································································································································· 20

Connecting the PGND Cable ······································································································································· 20

Connecting the Power Cord·········································································································································· 21

Power Socket and PGND ····································································································································· 21

Connecting the AC Power Cord ·························································································································· 21

Installing Antennas························································································································································· 22

Connecting the Console Terminal ································································································································ 22

Fixed Interfaces ······························································································································································ 23

Layer 3 Ethernet Interface····································································································································· 23

Connecting the AUX Interface to a Modem ······································································································· 26

Installing and Removing the Slide Rails ······················································································································· 27

Slide Rails······························································································································································· 27

Installing the Slide Rails ········································································································································ 27

Removing the Slide Rails······································································································································· 28

Installing the Security Lock ············································································································································ 28

Verifying Installation ······················································································································································ 28

Startup and Configuration·········································································································································29

Startup ············································································································································································· 29

Setting Up the Configuration Environment·········································································································· 29

Powering on the Router········································································································································· 31

Startup Process······················································································································································· 32

Configuration Fundamentals········································································································································· 32

Command Line Interface······································································································································· 33

Slot Arrangement and Rules for Numbering Interfaces····················································································· 34

Software Maintenance···············································································································································35

Files Managed by the Router ······························································································································· 35

Software Maintenance Methods·························································································································· 36

Maintaining Application Program and Configuration Through Command Lines···················································· 37

Maintaining the Router Through TFTP Server ····································································································· 38

Maintaining the Router Through FTP Server ······································································································· 40

BootWare Menu····························································································································································· 43

Main BootWare Menu·········································································································································· 43

BootWare Submenus ············································································································································ 45

Upgrading an Application Program Through an Ethernet Interface········································································· 47

Configuring Ethernet Interface Parameters ········································································································· 48

Upgrading Procedure ··········································································································································· 49

Upgrading BootWare Through Ethernet Interface······································································································ 51

Upgrading BootWare Through Serial Interface·········································································································· 51

XModem Protocol Overview ································································································································ 51

Modifying Serial Interface Parameters················································································································ 52

Upgrading BootWare··········································································································································· 53

Upgrading an Application Program Through a Serial Interface··············································································· 55

Maintaining Application and Configuration Files ······································································································ 55

Dealing with Password Loss·········································································································································· 57

User Password Loss ··············································································································································· 57

BootWare Password Loss ····································································································································· 58

Super Password Loss············································································································································· 58

Backing Up and Restoring BootWare·························································································································· 59

Hardware Maintenance ············································································································································60

Preparing Tools ······························································································································································ 60

Opening the Chassis Cover·········································································································································· 60

Internal Structure····························································································································································· 61

Replacing a VPM Card ················································································································································· 61

Structure of VPM Card·········································································································································· 61

VPM Slot································································································································································· 62

Installing/Removing a VPM Card························································································································ 62

Setting the Fixed E1 Interface Impedance··················································································································· 63

Troubleshooting··························································································································································65

Troubleshooting the Power System······························································································································· 65

Troubleshooting the Configuration System·················································································································· 65

Troubleshooting Application Software Upgrade ········································································································ 66

Index ···········································································································································································68

Overview

Introduction

The MSR 20-1X routers are multifunctional access routers which are oriented to small and medium

business (SMB), enterprise branches, and home offices, and are designed to serve high-quality

orderwire and commercial networks. High-quality orderwire and commercial networks need to satisfy

the requirements for broadband access, wireless access, voice access, VPN, and QoS. In addition, the

network devices require high performance, stability, security, and manageability. MSR 20-1X routers are

cost effective. They provide different integrated communication interfaces for different communication

links and also provide an SIC/DSIC slot for expansion.

The MSR 20-1X routers include MSR 20-10, MSR 20-11, MSR 20-12, MSR 20-13, and MSR 20-15. All of

them can be placed on a tabletop, or installed on a wall or in 19-inch standard cabinet. The following

sections will give you more details about these four models.

Physical Description of the MSR 20-1X Routers

Hardware Specifications

Table 1 Hardware specifications of the MSR 20-1X routers

Item MSR 20-10 MSR 20-11 MSR 20-12 MSR 20-13 MSR 20-15

Console/AUX 1 1 1 1 1

USB 1 1 1 1 1

Layer 3 Ethernet

interface

1 1

Layer 2 Ethernet

interface

4 4 4 4 4

ADSL 0 0 0 0 1

G.SHDSL.BIS 0 0 0 1 0

SA 0 1 0 0 0

ISDN BRI S/T 0 0 0 1 1 (Optional)

E1/T1 0 0 1 0 0

Fixed

Interfaces

AM 0 0 0 0 1 (Optional)

External SIC/DSIC slot 1 1 1 1 1

WLAN fixed

module

0 0 1 (Optional) 1 (Optional) 1 (Optional)

Internal

VPM slot 0 0 1 0 1

Processor

PowerPC

333 MHz

PowerPC

333 MHz

PowerPC

333 MHz

PowerPC

333 MHz

PowerPC

333 MHz

Item MSR 20-10 MSR 20-11 MSR 20-12 MSR 20-13 MSR 20-15

Boot ROM

1 M in the

flash

memory

1 M in the

flash

memory

1 M in the

flash

memory

1 M in the

flash

memory

1 M in the

flash

memory

Memory

DDR 256

Flash 32 MB 32 MB 32 MB 32 MB 32 MB

Physical dimensions (H × W ×

D) (excluding feet and

mounting brackets)

44.2 × 300

× 240 mm

(1.74 ×

11.81 ×

9.45 in.)

44.2 × 300

× 240 mm

(1.74 ×

11.81 ×

9.45 in.)

44.2 × 300

× 240 mm

(1.74 ×

11.81 ×

9.45 in.)

44.2 × 300

× 240 mm

(1.74 ×

11.81 ×

9.45 in.)

44.2 × 300

× 240 mm

(1.74 ×

11.81 ×

9.45 in.)

Weight 3 kg (6.6 lb.) 3 kg (6.6 lb.) 3 kg (6.6 lb.) 3 kg (6.6 lb.) 3 kg (6.6 lb.)

AC input

Rated

voltage

range: 100

VAC to 240

VAC, 50 Hz

or 60 Hz

Rated

voltage

range: 100

VAC to 240

VAC, 50 Hz

or 60 Hz

Rated

voltage

range: 100

VAC to 240

VAC, 50 Hz

or 60 Hz

Rated

voltage

range: 100

VAC to 240

VAC, 50 Hz

or 60 Hz

Rated

voltage

range: 100

VAC to 240

VAC, 50 Hz

or 60 Hz

Maximum power consumption 25 W 25 W 25 W 25 W 25 W

Operating temperature

0°C to 40°C

(32°F to

104°F)

0°C to 40°C

(32°F to

104°F)

0°C to 40°C

(32°F to

104°F)

0°C to 40°C

(32°F to

104°F)

0°C to 40°C

(32°F to

104°F)

Relative humidity

(non-condensing)

5% to 90% 5% to 90% 5% to 90% 5% to 90% 5% to 90%

NOTE:

• The console port and AUX port of MSR 20-1X routers share one RJ-45 interface.

• Two SIC slots can form one DSIC slot.

• MSR 20-12 and MSR 20-15 can implement voice data processing without any VCPM card. If you need

voice support, insert a VPM card into the VPM slot on the main control board, and then install a

SIC-1VE1 or SIC-1VT1 on the router.

• Only MSR 20-12 and 20-15 can support SIC-1VE1 and SIC-1VT1.

• MSR 20-12, MSR 20-13, and MSR 20-15 all include two sub-models. One sub-model supports WLAN

and the other does not. You can purchase the appropriate sub-model as required.

• The Boot ROM stores the Bootstrap for booting the router.

• The memory stores the communication data between the system and the CPU during the system

operation.

• The flash memory stores the BootWare, the software system and the configuration file of the router.

• Do not unplug the USB device during USB data transmission; otherwise, data loss or even hardware

failures may occur.

• The wireless module can not be purchased separately.

• By default, the impedance of the fixed E1 interface on MSR 20-12 is 75-ohm. Using the internal DIP

switches, users can change the interface impedance from 75-ohm to 120-ohm. For detail information,

refer to Chapter 6 “Hardware Maintenance”.

MSR 20-10 Router

Appearance

1. Front panel

Figure 1 Front panel of the MSR 20-10 router

(1) Power switch (2) Power socket

(3) LEDs (4) USB interface

(5) RESET button

2. Rear panel

Figure 2 Rear panel of the MSR 20-10 router

(1) Grounding terminal (2) Console/Auxiliary interface (CON/AUX)

(3) Layer 3 Ethernet interface 0 (ETH0) (4) Layer 2 Ethernet interface 1

(5) Layer 2 Ethernet interface 2 (6) Layer 2 Ethernet interface 3

(7) Layer 2 Ethernet interface 4 (8) SIC/DSIC slot

Panel LEDs

Table 2 and Table 3 respectively describe the LEDs on the front and rear panels of the MSR 20-10 router.

Table 2 Front panel LEDs of the MSR 20-10 router

LED Description

PWR

• ON: The router is powered on.

• OFF: The router is powered off.

SYS

• Green and fast blinking: The system is booting.

• Green and slow blinking: The system is operating normally.

• Yellow and fast blinking: The system is faulty.

• OFF: The system operation is abnormal.

LED Description

ETH

• OFF: No link is present.

• ON: A link is present.

• Blinking: Data is being transmitted or received.

Table 3 Rear panel LEDs of the MSR 20-10 router

LED Description

LINK

• OFF: No link is present.

• ON: A link is present.

ACT

• OFF: No data is being transmitted or received.

• Blinking: Data is being transmitted or received.

MSR 20-11 Router

Appearance

1. Front panel

Figure 3 Front panel of the MSR 20-11 router

(1) Power LED (PWR) (2) System LED (SYS)

(3) Ethernet interface LED (ETH) (4) Power switch

(5) Power socket (6) USB interface

(7) RESET button

Rear panel

Figure 4 Rear panel of the MSR 20-11 router

(1)Grounding terminal (2) Console/Auxiliary port (CON/AUX)

(3) Layer 3 Ethernet interface 0 (ETH0) (4) Layer 2 Ethernet interface 1

(5) Layer 2 Ethernet interface 2 (6) Layer 2 Ethernet interface 3

(7) Layer 2 Ethernet interface 4 (8) Serial interface LEDs

(9) Serial interface (10) SIC/DSIC slot

Panel LEDs

Table 4 and Table 5 respectively describe the LEDs on the front and rear panels of an MSR 20-11 router.

Table 4 Front panel LEDs of the MSR 20-11 router

LED Description

PWR

• ON: The router is powered on.

• OFF: The router is powered off.

SYS

• Green and fast blinking: The system is booting.

• Green and slow blinking: The system is operating normally.

• Yellow and fast blinking: The system is faulty.

• OFF: The system operation is abnormal.

ETH

• OFF: No link is present.

• ON: A link is present.

• Blinking: Data is being transmitted or received.

Table 5 Rear panel LEDs of the MSR 20-11 router

LED Description

LINK

• OFF: No link is present.

• ON: A link is present.

ACT

• OFF: No data is being transmitted or received.

• Blinking: Data is being transmitted or received.

MSR 20-12 Router

Appearance

1. Front panel

Figure 5 Front panel of the MSR 20-12 router

(1) Power switch (2) Power socket

(3) LEDs (4) USB interface

(5) RESET button

2. Rear panel

Figure 6 Rear panel of the MSR 20-12 router

(1) Grounding terminal (2) Console/Auxiliary interface (CON/AUX)

(3) Layer 3 Ethernet interface 0 (ETH0) (4) Layer 2 Ethernet interface 1

(5) Layer 2 Ethernet interface 2 (6) Layer 2 Ethernet interface 3

(7) Layer 2 Ethernet interface 4 (8) E1 LED

(9) E1 interface (10) SIC/DSIC slot

Panel LEDs

Table 6 and Table 7 respectively describe the LEDs on the front and rear panels of the MSR 20-12 router.

Table 6 Front panel LEDs of the MSR 20-12 router

LED Description

PWR

• ON: The router is powered on.

• OFF: The router is powered off.

SYS

• Green and fast blinking: The system is booting.

• Green and slow blinking: The system is operating normally.

• Yellow and fast blinking: The system is faulty.

• OFF: The system operation is abnormal.

ETH

• OFF: No link is present.

• ON: A link is present.

• Blinking: Data is being transmitted or received.

WLAN

When Boot ROM is booting:

• Blinking: The basic Boot ROM is booting.

• ON: The extended Boot ROM is booting.

When the router is running:

• Slow blinking: The system is operating normally.

• Fast blinking: There is heavy traffic.

• OFF: The system operation is normal.

Table 7 Rear panel LEDs of the MSR 20-12 router

LED Description

LINK

• OFF: No link is present.

• ON: A link is present.

ACT

• OFF: No data is being transmitted or received.

• Blinking: Data is being transmitted or received.

MSR 20-13 Router

Appearance

1. Front panel

Figure 7 Front panel of the MSR 20-13 router

(1) Power LED (PWR) (2) ACT LED of BRI interface (3) B1 LED

(4) System LED (SYS) (5) Ethernet LED (ETH) (6) Wireless LED (WLAN)

(7) B2 LED (8) USB interface (9) RESET button

(10) Power switch (11) Power socket

2. Rear panel

Figure 8 Rear panel of the MSR 20-13 router

(1) Grounding terminal (2) Console port/Auxiliary port (CON/AUX)

(3) BRI S/T interface (4) Layer 3 Ethernet interface 0 (ETH0)

(5) Layer 2 Ethernet interface 1 (6) Layer 2 Ethernet interface 2

(7) Layer 2 Ethernet interface 3 (8) Layer 2 Ethernet interface 4

(9) G.SHDSL.BIS LED (10) G.SHDSL.BIS interface

(11) SIC/DSIC slot

Panel LEDs

Table 8 and Table 9 respectively describe the LEDs on the front and rear panels of the MSR 20-13 router.

Table 8 Front panel LEDs of the MSR 20-13 router

LED Description

PWR

ON: The router is powered on.

OFF: The router is powered off.

SYS

Green and fast blinking: The system is booting.

Green and slow blinking: The system is operating normally.

Yellow and fast blinking: The system is faulty.

OFF: The system operation is abnormal.

ETH

OFF: No link is present.

ON: A link is present.

Blinking: Data is being transmitted or received.

WLAN

When Boot ROM is booting:

Blinking: The basic Boot ROM is booting.

ON: The extended Boot ROM is booting.

When the router is running:

Slow blinking: The system is operating normally.

Fast blinking: There is heavy traffic.

OFF: The system operation is abnormal.

ACT

ON: The BRI interface is in the active state.

OFF: The BRI interface is in the inactive state.

ON: Data is being transmitted or received on B1 channel.

OFF: Data is being transmitted or received on B1 channel.

ON: Data is being transmitted or received on B2 channel.

OFF: No data is being transmitted or received on B2 channel.

Table 9 Rear panel LEDs of the MSR 20-13 router

LED Description

LINK

OFF: No link is present.

ON: A link is present.

ACT

OFF: No data is being transmitted or received.

Blinking: Data is being transmitted or received.

MSR 20-15 Router

Appearance

1. Front panel

Figure 9 Front panel of the MSR 20-15 router

(1) (2)

(3)

(4)

(5)

(1) Power switch (2) Power socket (3) LEDs

(4) USB interface (5) RESET button

2. Rear panel

Figure 10 Rear panel of the MSR 20-15 router

(1) Grounding terminal (2) Console/Auxiliary interface (CON/AUX)

(3) BRI S/T interface (4) Layer 3 Ethernet interface 0 (ETH0)

(5) Layer 2 Ethernet interface 1 (6) Layer 2 Ethernet interface 2

(7) Layer 2 Ethernet interface 3 (8) Layer 2 Ethernet interface 4

(9) ADSL LED (10) ADSL interface

(11) SIC/DSIC slot

Panel LEDs

Table 10 and Table 11 respectively describe the LEDs on the front and rear panels of the MSR 20-15

router.

Table 10 Front panel LEDs of the MSR 20-15 router

LED Description

PWR

• ON: The router is powered on.

• OFF: The router is powered off.

SYS

• Green and fast blinking: The system is booting.

• Green and slow blinking: The system is operating normally.

• Yellow and fast blinking means the system is malfunctioning.

• OFF: The system operation is abnormal.

ETH

• OFF: No link is present.

• ON: A link is present.

• Blinking: Data is being transmitted or received.

WLAN

When Boot ROM is booting:

• Blinking: The basic Boot ROM is booting.

• ON: The extended Boot ROM is booting.

When the router is operating:

• Slow blinking: The system is operating normally.

• Fast blinking: There is heavy traffic.

• OFF: The system operation is abnormal.

ACT

• ON: The BRI interface is in the active state.

• OFF: The BRI interface is in the inactive state.

• ON: Data is being transmitted or received on B1 channel.

• OFF: No data is being transmitted or received on B1 channel.

• ON: Data is being transmitted or received on B2 channel.

• OFF: No data is being transmitted or received on B2 channel.

Table 11 Rear panel LEDs of the MSR 20-15 router

LED Description

LINK

• OFF: No link is present.

• ON: A link is present.

ACT

• OFF: No data is being transmitted or received.

• Blinking: Data is being transmitted or received.

Generic Modules

The generic modules provided for the MSR 20-1X routers include SICs. For detailed information about

interface cards, refer to MSR Series Routers Interface Module Manual.

For the types of interface modules that each model of the MSR 20-1X routers can accommodate, refer to

Appendix A Interface Card and Interface Module Purchase Guide in the MSR Series Routers Interface

Module Manual.

SICs and DSICs

MSR 20-1X routers adopt modular design and provide the following interfaces to support a wide range

of optional SICs/DSICs:

• Synchronous/asynchronous serial interface

• Ethernet port

• E1/T1 interface

• ISDN BRI/PRI

• ADSL interface

• Voice interface

• Layer 2 Ethernet interface

Installation Preparations

Requirements on Environment

MSR 20-1X routers are designed for indoor application. To ensure the normal operation and prolong

their service life, the installation site must meet the requirements mentioned in the following sections.

Requirements on Temperature and Humidity

To ensure the normal operation and prolong their service life, the temperature and humidity in the

equipment room shall maintain at a certain level. A long-term high relative humidity will quite likely result

in poor insulation performance, electric leakage, mechanical property change, and corrosion, while a

low relative humidity will result in looseness of fastening screws owing to shrinkage of insulation washers,

or electrostatic discharge (ESD), which may damage the CMOS circuit on the router. A high temperature

will speed up the aging of insulation materials, and thus will greatly lower the reliability of the router and

shorten the service life.

Table 12 lists the requirements on the temperature and humidity for MSR 20-1X routers.

Table 12 Temperature and humidity requirements in the equipment room

Temperature Relative Humidity

0°C to 40°C (32°F to 104°F) 5% to 90% (noncondensing)

Requirements on Cleanness

Dust is harmful to the safe operation of the router. Dust on the chassis may result in static absorption,

causing poor contact between metal connectors or joints, which may not only shorten the service life of

the router, but also bring about communication failures. Especially under the condition of a low indoor

humidity, dust is easier to be absorbed.

Table 13 lists the requirements on the dust concentration and diameters in the equipment room.

Table 13 Limitation on dust concentration and diameters in the equipment room

Diameter (μm) 0.5 1 3 5

Concentration

(particle/m³)

1.4 × 10

7 × 10

2.4 × 10

1.3 × 10

Besides, the contents of salt, acid, and sulfide in equipment room shall be strictly restricted. Harmful

gases will accelerate the corrosion of metal parts and the aging of some parts.

Table 14 lists the

concentration limit of SO

, H

S, NH

and CI

in the equipment room.

Table 14 Concentration limit of some harmful gases in equipment room

Gas Concentration limit (mg/m

)

0.2

S 0.006

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