H3C MSR 20-1X Routers
Installation Guide
Hangzhou H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 20101217-C-1.04
Copyright © 2006-2010, Hangzhou H3C Technologies Co., Ltd. and its licensors
All rights reserved
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
3
Care,
, TOP G, , IRF, NetPilot, Neocean, NeoVTL,
SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG, V
2
G, V
n
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.
i
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
ii
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
Introduction ····································································································································································· 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
1
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
1
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
2
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
MB
DDR 256
MB
DDR 256
MB
DDR 256
MB
DDR 256
MB
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”.
3
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.
4
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
5
2.
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.
6
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
7
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.
8
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
9
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.
B1
ON: Data is being transmitted or received on B1 channel.
OFF: Data is being transmitted or received on B1 channel.
B2
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.
10
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
11
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.
B1
• ON: Data is being transmitted or received on B1 channel.
• OFF: No data is being transmitted or received on B1 channel.
B2
• 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.
12
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
13
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
7 × 10
5
2.4 × 10
5
1.3 × 10
5
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
2
, H
2
S, NH
3
and CI
2
in the equipment room.
Table 14 Concentration limit of some harmful gases in equipment room
Gas Concentration limit (mg/m
3
)
SO
2
0.2
H
2
S 0.006
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