Huawei FusionModule 1000B Operating manual

FusionModule1000B Air-Cooled IT Solution
V100R003C00
Maintenance Guide
Issue
02
Date
2017-01-10
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd. 2017. 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://e.huawei.com

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About This Document
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About This Document
Purpose
This document describes the operation methods and precautions for the FusionModule1000
prefabricated modular data center (FusionModule1000 for short) in terms of the routine
maintenance, emergency operations, alarm handling, and parts replacement. It provides you a
quick grasp of the operation and maintenance (O&M) methods of the FusionModule1000.
Intended Audience
This document is intended for:
Maintenance engineers
Technical support engineers
System engineers
Hardware installation engineers
Commissioning engineers
Data configuration engineers
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.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.

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Symbol
Description
NOTICE is used to address practices not related to
personal injury.
Calls attention to important information, best practices
and tips.
NOTE is used to address information not related to
personal injury, equipment damage, and environment
deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all
updates made in previous issues.
Issue 02 (2017-01-10)
Replacing the PD510: Optimized the method.
Replacing the card reader: Optimized the method.
Replacing the electronic lock: Deleted the content.
Replacing fire extinguishing system devices (standard): Optimized the methods.
Replacing fire extinguishing system devices (CE): Optimized the methods.
Issue 01 (2016-09-25)
This issue is the first official release.

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Contents
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Contents
About This Document.................................................................................................................... ii
1 O&M Precautions..........................................................................................................................1
2 O&M Preparations........................................................................................................................3
2.1 Tools .............................................................................................................................................................................3
2.2 Obtaining Technical Documents...................................................................................................................................4
2.3 Container Entry Requirements......................................................................................................................................6
2.4 O&M Personnel Skill Requirements ............................................................................................................................7
3 O&M Description .........................................................................................................................8
3.1 O&M Overview............................................................................................................................................................8
3.2 Routine Maintenance....................................................................................................................................................8
3.3 Alarm Handling ............................................................................................................................................................9
3.3.1 Alarm handling flowchart..........................................................................................................................................9
3.3.2 Viewing and Collecting Alarm Information...............................................................................................................9
3.3.3 Determining the Faulty Area and Alarm Severity.................................................................................................... 11
3.3.4 Locating and Rectifying Faults................................................................................................................................ 11
3.3.5 Parts Replacement ...................................................................................................................................................12
3.3.6 Emergency Operation..............................................................................................................................................13
3.3.7 Contacting Huawei Technical Support.....................................................................................................................15
4 Routine Maintenance .................................................................................................................16
4.1 Paint Repair ................................................................................................................................................................16
4.2 Routine Maintenance..................................................................................................................................................21
4.3 Monthly Maintenance.................................................................................................................................................22
4.3.1 Power Supply and Distribution System...................................................................................................................22
4.3.2 Cooling System........................................................................................................................................................24
4.3.3 Monitoring System ..................................................................................................................................................27
4.3.4 Fire Extinguishing System (Standard).....................................................................................................................29
4.3.5 Fire Extinguishing System (CE)..............................................................................................................................30
4.3.6 Other Systems..........................................................................................................................................................31
4.4 Quarterly Maintenance ...............................................................................................................................................33
4.4.1 Power Supply and Distribution System...................................................................................................................33
4.4.2 Cooling System........................................................................................................................................................34

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4.4.3 Monitoring System ..................................................................................................................................................38
4.4.4 Fire Extinguishing System (Standard).....................................................................................................................39
4.4.5 Fire Extinguishing System (CE)..............................................................................................................................40
4.4.6 Other Systems..........................................................................................................................................................40
4.5 Semi-annual Maintenance...........................................................................................................................................41
4.5.1 Power Supply and Distribution System...................................................................................................................41
4.5.2 Cooling System........................................................................................................................................................41
4.5.3 Monitoring System ..................................................................................................................................................42
4.5.4 Fire Extinguishing System (Standard).....................................................................................................................47
4.5.5 Fire Extinguishing System (CE)..............................................................................................................................50
4.5.6 Other Systems..........................................................................................................................................................53
4.6 Annual Maintenance...................................................................................................................................................54
5 Alarms and Faults .......................................................................................................................57
5.1 VESDAAlarm ............................................................................................................................................................57
5.2 Fire Alarms (Standard)................................................................................................................................................57
5.3 Fire Alarms (CE).........................................................................................................................................................58
5.4 Temperature Alarms....................................................................................................................................................58
5.5 Humidity Alarms ........................................................................................................................................................60
5.6 Door Sensor Alarms....................................................................................................................................................61
5.7 Access Control Alarms ...............................................................................................................................................61
5.8 Water Intrusion Alarm.................................................................................................................................................62
5.9 Hydrogen Alarm .........................................................................................................................................................63
5.10 Mains Outage............................................................................................................................................................64
5.11 Communication Failure Alarms................................................................................................................................64
5.12 SPD Alarm................................................................................................................................................................65
5.13 PDU8000 MDUAlarms ...........................................................................................................................................66
5.14 ATS Alarms...............................................................................................................................................................67
5.15 UPS5000-E Alarms...................................................................................................................................................68
5.16 35 kWAir-Cooled PrecisionAir ConditionerAlarms ..............................................................................................69
5.17 20 kWAir-Cooled PrecisionAir ConditionerAlarms ..............................................................................................73
6 Parts Replacement.......................................................................................................................77
6.1 Replacing Power Supply and Distribution System Components................................................................................77
6.1.1 Replacing a PD510 ..................................................................................................................................................77
6.1.2 Replacing the MDU.................................................................................................................................................78
6.1.3 Replacing the SPD in a PDC ...................................................................................................................................80
6.1.4 Replacing a UPS5000-E Battery..............................................................................................................................81
6.1.5 Replacing a Monitoring rPDU.................................................................................................................................82
6.1.6 Replacing a Cabinet rPDU.......................................................................................................................................83
6.2 Replacing Cooling System Components ....................................................................................................................85
6.2.1 Replacing a Remote T/H Sensor for an Air Conditioner .........................................................................................85
6.2.2 Replacing Air Filters for a 20 kWAir-Cooled Precision Air Conditioner ...............................................................86

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6.2.3 Replacing Air Filters for a 35 kWAir-Cooled Precision Air Conditioner ...............................................................88
6.2.4 Replacing Parts of an Air-Cooled Precision Air Conditioner ..................................................................................90
6.2.5 Replacing a Ventilation Vent Air Filter....................................................................................................................91
6.2.6 Replacing a Thermal Insulation Layer.....................................................................................................................92
6.2.7 Replacing Pipes .......................................................................................................................................................93
6.2.7.1 Replacing the Humidifier Water Refill Pipe for a Precision Air Conditioner.......................................................93
6.2.7.2 Replacing the Condensate Drainpipe of a PrecisionAir Conditioner...................................................................94
6.3 Replacing Monitoring System Components...............................................................................................................95
6.3.1 Replacing a Polymer T/H Sensor.............................................................................................................................95
6.3.2 Replacing a Water Sensor (Point Type) ...................................................................................................................97
6.3.3 Replacing a Water Sensor (Rope Type) ...................................................................................................................98
6.3.4 Replacing a Door Status Sensor.............................................................................................................................100
6.3.5 Replacing a GSM Modem .....................................................................................................................................101
6.3.6 Replacing a Hydrogen Collector............................................................................................................................103
6.3.7 Replacing a Hydrogen Exhaust Fan.......................................................................................................................105
6.3.8 Replacing a Camera...............................................................................................................................................107
6.3.9 Replacing a VCN500.............................................................................................................................................109
6.3.10 Replacing a LAN Switch..................................................................................................................................... 111
6.3.11 Replacing the ECC500 Collector......................................................................................................................... 113
6.3.12 Replacing an RH2288 Server .............................................................................................................................. 115
6.3.13 ReplacingAccess Control Components............................................................................................................... 116
6.3.13.1 Replacing a Card Reader .................................................................................................................................. 116
6.3.13.2 Replacing an Exit Button.................................................................................................................................. 118
6.3.13.3 Replacing an Electronic Lock........................................................................................................................... 119
6.3.13.4 Replacing an Emergency Door Release Button................................................................................................121
6.3.13.5 Replacing a Fingerprint Scanner.......................................................................................................................123
6.3.13.6 Replacing an Access Controller........................................................................................................................124
6.4 Replacing Fire Extinguishing System Devices (Standard) .......................................................................................126
6.4.1 Replacing a Smoke Detector (Standard)................................................................................................................126
6.4.2 Replacing a Heat detector (Standard) ....................................................................................................................128
6.4.3 Replacing the Gas Release Indicator (Standard)....................................................................................................130
6.4.4 Replacing an Indoor Fire Alarm Horn/Strobe (Standard)......................................................................................132
6.4.5 Replacing an External Horn Strobe (Standard)......................................................................................................134
6.4.6 Replacing a Fire Alarm Sounder (Standard)..........................................................................................................136
6.4.7 Replacing the Emergency Start/Abort Switch (Standard)......................................................................................138
6.4.8 Replacing Batteries for the Fire Alarm Control Panel (Standard)..........................................................................140
6.4.9 Replacing a Fire Cylinder (Standard) ....................................................................................................................143
6.4.10 Charging Extinguishant .......................................................................................................................................149
6.4.11 Replacing a Fire Alarm Control Panel (Standard)................................................................................................152
6.4.12 Replacing an Emergency Light (Standard)..........................................................................................................154
6.5 Replacing Fire Extinguishing System Devices (CE)................................................................................................155
6.5.1 Replacing a Smoke Detector (CE).........................................................................................................................155

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6.5.2 Replacing a Heat Detector (CE) ............................................................................................................................157
6.5.3 Replacing Warning Signs (CE)..............................................................................................................................158
6.5.4 Replacing an Internal Horn Strobe (CE)................................................................................................................160
6.5.5 Replacing an External Horn Strobe (CE)...............................................................................................................162
6.5.6 Replacing a FireAlarm Bell (CE)..........................................................................................................................165
6.5.7 Replacing the Extinguishant Abort Button (CE)....................................................................................................166
6.5.8 Replacing Batteries for the Extinguishant Control Panel (CE)..............................................................................170
6.5.9 Replacing a Fire Cylinder (CE) .............................................................................................................................171
6.5.10 Replacing the Extinguishant Control Panel (CE).................................................................................................174
6.5.11 Replacing an Emergency Light (CE)...................................................................................................................176
6.6 Replacing Batteries for the VESDAPower Box.......................................................................................................178
7 Emergency Operations.............................................................................................................181
7.1 Emergency Operations for Mains Failure.................................................................................................................181
7.2 Emergency Operations for Circuit Breaker Tripping................................................................................................182
7.3 Overload Emergency Operations..............................................................................................................................183
7.4 Emergency Operations for Battery Electrolyte Leakage...........................................................................................183
7.5 Emergency Operations for Overtemperature............................................................................................................184
7.6 Emergency Operations for the Management System Communication Failure.........................................................184
7.7 Emergency Operations for High Hydrogen Density.................................................................................................185
7.8 Emergency Operations for Container Door Cannot Open........................................................................................186
7.9 Emergency Operations for Container Door Open.....................................................................................................187
7.10 Emergency Operations for an Early Fire Alarm .....................................................................................................187
7.11 Emergency Operations for a Single FireAlarm (Standard) ....................................................................................188
7.12 Emergency Operations for a Double Fire Alarm (Standard)...................................................................................191
7.13 FIRE RELAY Emergency Operations (CE)............................................................................................................193
7.14 Emergency Operations for a LOCAL FIREAlarm (CE)........................................................................................195
8 FusionModule1000 Emergency Exit Guide..........................................................................197
9 Acronyms and Abbreviations.................................................................................................198

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1 O&M Precautions
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1 O&M Precautions
Power Supply and Distribution System
When operating power distribution equipment, follow the local regulations and rules.
When performing high-voltage and AC operations, use dedicated tools and wear
protection equipment.
Before entering the power supply zone, verify that no hydrogen alarm is displayed on the
NetEco LCD.
Before replacing a component which is not hot swappable, you must switch off the
upstream circuit breaker, and verify that the component to be replaced is power off.
Assess impact on the system before switching off the general circuit breaker or cutting
off the cooling system during parts replacement.
Do not install or remove power cables when the device is on. Transient contact between
the core of the power cable and the conductor may generate electric arcs or sparks, which
may cause fire or hurt human eyes.
Before removing component cables, mark the cables with their corresponding port
numbers for later connection.
Before connecting a power cable, check that the label on the power cable is correct.
For the detailed power control relationships between devices, see the power distribution
system diagram for the solution in use.
During battery O&M, observe the following:
Insulate tools before battery O&M.
Assign only professional engineers to perform the O&M.
Do not use any organic solvent to clean batteries.
Do not remove the safety valve or fill anything into batteries.
Do not smoke or use fire around batteries.
Do not place tools on bare batteries terminals.
Do not short-circuit the terminals of lead-acid batteries; otherwise, a fire may occur.
Do not maintain batteries online. Replace a battery if it is faulty.
Charge the battery within 24 hours after battery discharge; otherwise, the battery
capacity will be affected.
Do not open lead-acid batteries as electrolyte leakage may cause bodily injuries. If you
contact the electrolyte accidentally, immediately clean your skin with water and seek
medical advice from a doctor.

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Replace batteries only with the ones of the same or equivalent type. Improper battery
replacement may cause an explosion.
Maintain and service batteries periodically, and clean contaminated terminals in time.
Cooling System
Assign only professional engineers to perform O&M for the cooling system.
Do not operate valves of the cooling system arbitrarily.
Do not block the air exhaust and return vents of air conditioners.
Promptly put serviced units into use after the cooling system is maintained; otherwise,
equipment cannot work at optimal status.
If the number of running air conditioners in an area is less than the rated minimum
number, some loads must be powered off; otherwise, temperature inside the container
may go out of control.
For detailed configurations of the cooling system, see the initial configuration parameter
manual for the solution in use.
Management System (Monitoring System)
Assign only professional engineers to perform O&M for the management system.
Routine maintenance for the management system is critical for long-term stable and
efficient operation of the FusionModule1000 because most alarms are reported over the
management system.
Promptly handle reported alarms to prevent equipment damage or service interruption.
Check and calibrate the hydrogen detection equipment sensors half a year within the
sensor service life (less than 5 years).
For detailed initial configurations for the management system, see the initial
configuration parameter manual for the solution in use.
Fire Extinguishing System
Do not smoke or use open flame inside the container.
Assign fire engineers to perform O&M for the fire extinguishing system.
Take antistatic measures before operating a VESDA; otherwise, the VESDA may be
damaged.
Before performing semi-annual joint commissioning for a standard fire extinguishing
system, disconnect the electromagnetic valve, and insert the safety pin in the fire
cylinder to prevent extinguishant release due to misoperations.
Before performing joint commissioning for a CE fire extinguishing system, disconnect
the electromagnetic valve to prevent extinguishant release due to misoperations.

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2 O&M Preparations
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2 O&M Preparations
2.1 Tools
Before the O&M, obtain tools and materials listed in Table 2-1.
Table 2-1 Tools
Tools
Phillips screwdriver
Flat-head screwdriver
Adjustable wrench
Electrician's knife
Needle-nose pliers
Diagonal pliers
Crimping tool
Wire stripper
RJ45 crimping tool
Cable cutter
Hex key
Socket wrench

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Tools
Hand-held
thermohygrograph
Multimeter
Electroprobe
Network cable tester
Heat gun
Utility knife
Step ladder (2 m)
Cable tie
Insulation tape
ESD wrist strap
ESD gloves
Protective gloves
Clamp meter
ESD floor suction plate
Vacuum cleaner
The listed tools are for routine maintenance only. Prepare other tools as required.
2.2 Obtaining Technical Documents
Table 2-2 lists the technical documents required for FusionModule1000 O&M.

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Table 2-2 Document list
Technical Manual
Function
Obtaining Method
(Remarks)
FusionModule1000B
Air-cooled IT solution
V100R003C00 Initial
Configuration Parameter
Manual
Provides initial
configuration parameters
for various systems in the
FusionModule1000.
Download this document
from http://e.huawei.com.
FusionModule1000B
Air-cooled IT solution
V100R003C00 Quick
Installation Guide
Provides key parameters
and diagrams for installing
the FusionModule1000.
Download this document
from http://e.huawei.com.
FusionModule1000B
Air-cooled IT solution
V100R003C00 Installation
Guide
Describes the installation
methods for
FusionModule1000 devices
to be installed onsite.
Download this document
from http://e.huawei.com.
FusionModule1000B
Air-cooled IT solution
V100R003C00
Commissioning Guide
Describes how to perform
power-on commissioning
and power-off shutdown
for the FusionModule1000.
Download this document
from http://e.huawei.com.
iManager NetEco Product
Document - (NetEco Version)
Describes how to install the
monitoring hardware and
configure the monitoring
software.
The NetEco version
depends on the version in
use. Click on the
NetEco WebUI to obtain
the NetEco version. If the
NetEco version is
iManager NetEco
V600R007C60, see
iManager NetEco Product
Document -
(V600R007C60) for details.
Download this document
from http://e.huawei.com.
(Optional) iManager NetEco
PowerEcho User Manual
(NetEco Version)
Describes the installation,
start, stop, and removal of
the PowerEcho, as well as
how to operate and
maintain the NetEco using
the PowerEcho.
The NetEco version
depends on the version in
use. Click on the
NetEco WebUI to obtain
the NetEco version. If the
NetEco version is
iManager NetEco
V600R007C60, see
iManager NetEco
PowerEcho User Manual
(V600R007C60) for details.
Download this document
from http://e.huawei.com.
NetCol5000-A 20 kW Air
Cooled In-row Precision Air
Conditioner User Manual
Describes how to use and
maintain a 20 kW
air-cooled precision air
Download this document
from http://e.huawei.com.

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Technical Manual
Function
Obtaining Method
(Remarks)
conditioner.
NetCol5000-A 25 kW & 35
kW Air-Cooled In-row
Precision Air Conditioner
User Manual (600 mm Width)
Describes how to use and
maintain 25 kW & 35 kW
air-cooled precision air
conditioners.
Download this document
from http://e.huawei.com.
UPS5000-E-(40 kVA-320
kVA) User Manual
Describes how to use and
maintain the UPS5000-E.
Download this document
from http://e.huawei.com.
UPS5000-E-(20 kVA-160
kVA) User Manual (Low
Voltage)
Describes how to use and
maintain the UPS5000-E.
Download this document
from http://e.huawei.com.
FusionModule1000B
V100R003C00 Outsourced
Component Document
Package
Describes how to use and
maintain outsourced
components.
Download this document
from
http://3ms.huawei.com. If
the link is unavailable,
contact the local GTAC or
TAC.
2.3 Container Entry Requirements
The following describes the requirements for working in the FusionModule1000.
Item
Requirement
Before entry
Obtain the entry permit.
NOTE
The detailed operations are performed based on the requirements specified by the
manager of the FusionModule1000.
Entry
preparations
Obtain ESD clothes and shoes.
Remove dust from tools and materials that need to be taken into the
data center, and make a record.
Do not bring in forbidden items, such as storage devices, cameras, or
portable hard disks into the FusionModule1000.
Working in the
data center
Only professional personnel are allowed to work in the data center
and only in the presence of designated personnel.
Obtain permission from designated personnel and take necessary
precautions and preventive measures before entering the
FusionModule1000 and performing any operation which may affect
the normal running of the FusionModule1000.
Do not perform any unauthorized operations.
After all work
is finished
Pack up the tools and surplus materials.
Clean up and organize the equipment room environment according to

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Item
Requirement
environment requirements.
Accept the operations and make records about any operations
performed.
Check before
leaving
Check the items to be taken out.
Sign out.
Follow-up
Procedure
Return the ESD clothes and shoes.
If any faulty component is replaced, dispose of the removed faulty
component.
Replace, maintain, and troubleshoot components of the FusionModule1000 only in the
presence of qualified engineers.
2.4 O&M Personnel Skill Requirements
Table 2-3 FusionModule1000 O&M personnel skill requirements
Field
Personnel Skill Requirement
Power Supply and
Distribution System
Familiar with the power supply and distribution system
configurations and the operations for each core component
in the FusionModule1000
With power distribution system engineer qualifications
Cooling System
Familiar with the cooling system configurations and the
operations for each core component in the
FusionModule1000
With cooling engineer qualifications
Management system
With extra low voltage (ELV) engineer qualifications,
having knowledge in the hardware and software of the
container data center, familiar with basic communications
protocols, familiar with equipment interfaces in ELV
systems, and proficient in operating the NetEco
management system
Fire extinguishing system
Familiar with the fire extinguishing system configurations
and the operations for each core component in the
FusionModule1000
With fire extinguishing engineer qualifications
Lighting and structural
systems
Familiar with the overall configurations and layout of the
FusionModule1000
Experienced in maintaining the FusionModule1000

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3 O&M Description
3.1 O&M Overview
The FusionModule1000 operation and maintenance (O&M) include routine maintenance,
alarm handling, parts replacement, and emergency operations.
During the FusionModule1000 O&M, maintenance personnel perform routine preventive
maintenance, identifies fault alarms, performs alarm handling and emergency operations, and
replace parts if necessary. Prompt fault alarm identification and handling are critical for the
long-term stable running of the FusionModule1000.
3.2 Routine Maintenance
Purpose
Routine maintenance refers to preventive and periodic checking and maintenance carried out
to promptly identify and handle alarms and potential faults during the normal running of the
system.
Routine maintenance aims to ensure long-term stable operation of the equipment. By routine
maintenance, maintenance personnel can:
Promptly find and handle alarms related to equipment operating and prevent fault
escalation.
Promptly identify potential faults before they materialize to prevent economic loss and
customer satisfaction degrading.
Analyze the system operating trend based on collected information and take measures to
improve operating efficiency.
Maintenance Period
The routine maintenance period specifies how often a maintenance task is performed. A
maintenance task can be performed on a daily, monthly, quarterly, semi-annual, or annual
basis.

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3.3 Alarm Handling
If an incident occurs and may jeopardize the long-term stable running of the
FusionModule1000, the system or a component will generate alarms. O&M personnel or the
person on duty must promptly handle any identified alarms.
3.3.1 Alarm handling flowchart
Figure 3-1 Alarm handling flowchart
3.3.2 Viewing and Collecting Alarm Information
Prerequisites
An alarm is generated.
Alarm information helps to rapidly locate and rectify faults.

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Preparations
Tools: none
Materials: none
Documents: NetEco management system documents, documents delivered with related
components
Procedure
Step 1 Enter your user name and password to log in to the management system on the NetEco
WebUI.
If the password was changed when the management system was commissioned, enter the
new password.
If the password was not changed when the management system was commissioned, enter
the initial password.
Step 2 Choose Fault > Current Alarms, and view the current alarm information.
Step 3 Collect alarm information.
After an alarm is generated, immediately collect the following information:
Occurrence time and place
Detailed fault symptoms
Operations performed before the fault occurs
Services and scope affected by the fault alarm
Measures taken after the fault occurs and the effect
----End
Example
Table 3-1 describes an alarm information collection template.
Table 3-1 Alarm information collection table
Alar
m
Time
Alar
m
Loca
tion
Sym
ptom
Type
Current
Operation
Impact
Measures Taken
and Effect

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3.3.3 Determining the Faulty Area and Alarm Severity
After receiving a fault alarm, determine the alarm severity immediately. If the alarm is critical,
troubleshoot by following instructions in 7 Emergency Operations. If the alarm is not critical,
locate and handle the alarm by following instructions in 5 Alarms and Faults.
Critical alarms include the following:
Alarms that cause system shutdown
Alarms that result in equipment damage or affect equipment usage
Alarms that may result in serious results (such as fire or communication interruption)
3.3.4 Locating and Rectifying Faults
Locating Faults
Locate faults from the following aspects:
Component: Locate the component for which the alarm is generated, such as a UPS or an
air conditioner.
Module: Locate the faulty module after locating a faulty component, such as the UPS
controller or the air conditioner controller.
Alarm Handling
After locating the component or module for which the alarm is generated, rectify the fault.

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Figure 3-2 Troubleshooting flowchart
After an alarm is cleared, prepare a report to record the alarm handling process.
Common alarm references are as follows:
Data center infrastructure alarm reference in the online help of the management system
Alarm references in documents delivered with components
Alarm reference in this document
Alarm reference obtained from Huawei technical support
It is recommended that the alarm handling report consists of information about the alarm occurrence
time, location, symptom, fault locating process, alarm handling process, and alarm prevention solutions.
3.3.5 Parts Replacement
Faulty parts identified during routine maintenance and alarm handling must be promptly
replaced.