Huawei FusionModule 1000A40 Operating manual

FusionModule1000A40 IT Solution
V200R002C00
Maintenance Guide (2016.05, AI
Version)
Issue
04
Date
2018-01-05
HUAWEI TECHNOLOGIES CO., LTD.

Issue 04 (2018-01-05)
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Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2018. 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

FusionModule1000A40 IT Solution
Maintenance Guide (2016.05, AI Version)
About This Document
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ii
About This Document
Purpose
This document describes the operation methods and precautions for the FusionModule1000A
prefabricated all-in-one data center (FusionModule1000 for short) in terms of the routine
maintenance, emergency operations, 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.

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About This Document
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iii
Symbol
Description
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
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 04 (2018-01-05)
Added the Tyco fire extinguishing system.
Divided the server cabinet layout into two scenarios.
Issue 03 (2017-08-20)
Changed the end door structure at the outdoor unit side of the pre-fab. module.
Changed the position of the card reader at the main entrance of the pre-fab. module.
Issue 02 (2017-01-10)
Changed the appearance of camera mounting kits.
Marked the camera installation procedure as optional.
Adjusted the architecture of the manual.
Optimized the content of the manual.
Issue 01 (2016-08-30)
This issue is the first official release.

FusionModule1000A40 IT Solution
Maintenance Guide (2016.05, AI Version)
Contents
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iv
Contents
About This Document.................................................................................................................... ii
1 O&M Precautions..........................................................................................................................1
2 Preparations....................................................................................................................................3
2.1 Tools .............................................................................................................................................................................3
2.2 Obtaining Technical Documents...................................................................................................................................5
2.3 O&M Personnel Skill Requirements ............................................................................................................................6
2.4 Contacting Huawei Technical Support .........................................................................................................................7
3 Maintenance...................................................................................................................................8
3.1 Routine Maintenance....................................................................................................................................................8
3.2 Monthly Maintenance...................................................................................................................................................9
3.2.1 Power Supply and Distribution System .....................................................................................................................9
3.2.2 Cooling System........................................................................................................................................................10
3.2.3 Monitoring System ..................................................................................................................................................12
3.2.4 Fire Extinguishing System (Standard).....................................................................................................................13
3.2.5 Fire Extinguishing System (CE Kidde) ...................................................................................................................15
3.2.6 Fire Extinguishing System (CE Tyco) .....................................................................................................................16
3.2.7 Other Systems..........................................................................................................................................................17
3.3 Quarterly Maintenance ...............................................................................................................................................18
3.3.1 Power Supply and Distribution System ...................................................................................................................18
3.3.2 Cooling System........................................................................................................................................................20
3.3.3 Monitoring System ..................................................................................................................................................24
3.3.4 Fire Extinguishing System (Standard).....................................................................................................................25
3.3.5 Fire Extinguishing System (CE Kidde) ...................................................................................................................26
3.3.6 Fire Extinguishing System (CE Tyco) .....................................................................................................................26
3.3.7 Other Systems..........................................................................................................................................................27
3.4 Semi-annual Maintenance...........................................................................................................................................28
3.4.1 Power Supply and Distribution System ...................................................................................................................28
3.4.2 Cooling System........................................................................................................................................................28
3.4.3 Monitoring System ..................................................................................................................................................30
3.4.4 Fire Extinguishing System (Standard).....................................................................................................................32
3.4.5 Fire Extinguishing System (CE Kidde) ...................................................................................................................34
3.4.6 Fire Extinguishing System (CE Tyco) .....................................................................................................................37

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3.4.7 Other Systems..........................................................................................................................................................39
3.5 Annual Maintenance ...................................................................................................................................................41
4 Alarms and Faults .......................................................................................................................44
4.1 Alarm Handling Flowchart .........................................................................................................................................44
4.2 Viewing and Collecting Alarm Information................................................................................................................45
4.3 Determining the Faulty Area and Alarm Severity.......................................................................................................46
4.4 Locating and Rectifying Faults...................................................................................................................................47
4.5 Emergency Operation .................................................................................................................................................49
4.6 Fire Alarms (Standard)................................................................................................................................................50
4.7 Fire Alarms (CE).........................................................................................................................................................51
4.8 Temperature Alarms....................................................................................................................................................51
4.9 Humidity Alarms ........................................................................................................................................................53
4.10 Door Status Alarm ....................................................................................................................................................54
4.11 Access Alarm ............................................................................................................................................................55
4.12 Water Intrusion Alarm...............................................................................................................................................55
4.13 Mains Outage Alarm.................................................................................................................................................56
4.14 Communication Failure Alarms................................................................................................................................57
4.15 SPD Alarm................................................................................................................................................................57
4.16 ATS Alarm ................................................................................................................................................................58
4.17 UPS2000-G Alarms ..................................................................................................................................................59
4.18 20 kW Air-Cooled Precision Air Conditioner Alarms...............................................................................................60
5 Components Replacement.........................................................................................................67
5.1 Replacing Power Supply and Distribution System Components................................................................................67
5.1.1 Replacing a PD510 electricity meter .......................................................................................................................67
5.1.2 Replacing the SPD in a PDC ...................................................................................................................................68
5.1.3 Replacing a Monitoring rPDU.................................................................................................................................70
5.1.4 Replacing an rPDU..................................................................................................................................................71
5.1.5 Replacing a Light (Standard)...................................................................................................................................73
5.1.6 Replacing a Light (CE)............................................................................................................................................76
5.2 Replacing Cooling System Components ....................................................................................................................77
5.2.1 Replacing a Remote T/H Sensor for an Air Conditioner .........................................................................................77
5.2.2 Replacing Parts of an Air-Cooled Precision Air Conditioner...................................................................................78
5.2.3 Replacing Air Filters for a 20 kW Air-cooled Precision Air Conditioner................................................................78
5.2.4 Replacing a Ventilation Vent Air Filter....................................................................................................................80
5.2.5 Replacing Thermal Insulation Foam........................................................................................................................81
5.2.6 Replacing Pipes .......................................................................................................................................................82
5.2.6.1 Replacing the Humidifier Water Refill Pipe for a Precision Air Conditioner .......................................................82
5.2.6.2 Replacing the Condensate Drainpipe of a Precision Air Conditioner...................................................................83
5.2.6.3 Replacing a Dehumidifier.....................................................................................................................................84
5.3 Replacing Monitoring System Components ...............................................................................................................85
5.3.1 Replacing a Water Sensor (Point Type) ...................................................................................................................85

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5.3.2 Replacing a Door Status Sensor...............................................................................................................................87
5.3.3 Replacing a Camera.................................................................................................................................................88
5.3.4 Replacing a VCN500...............................................................................................................................................90
5.3.5 Replacing a LAN Switch.........................................................................................................................................92
5.3.6 Replacing the ECC500 Collector.............................................................................................................................93
5.3.7 Replacing an RH2288 Server...................................................................................................................................94
5.3.8 Replacing Access Control Components...................................................................................................................96
5.3.8.1 (Optional) Replacing an End Door Card Reader ..................................................................................................96
5.3.8.2 (Optional) Replacing an End Wall Card Reader ...................................................................................................97
5.3.8.3 Replacing an Exit Button......................................................................................................................................99
5.3.8.4 Replacing an Electronic Lock.............................................................................................................................100
5.3.8.5 Replacing an Emergency Door Release Button..................................................................................................102
5.3.8.6 Replacing an Access Controller..........................................................................................................................104
5.4 Replacing Fire Extinguishing System Devices (Standard) .......................................................................................106
5.4.1 Replacing a Smoke Detector (Standard)................................................................................................................106
5.4.2 Replacing a Heat detector (Standard) ....................................................................................................................108
5.4.3 Replacing the Gas Release Indicator (Standard).................................................................................................... 110
5.4.4 Replacing an Indoor Fire Alarm Horn/Strobe (Standard) ...................................................................................... 112
5.4.5 Replacing a Fire Alarm Sounder (Standard) ..........................................................................................................114
5.4.6 Replacing the Emergency Start/Abort Switch (Standard)...................................................................................... 116
5.4.7 Replacing Batteries for the Fire Alarm Control Panel (Standard).......................................................................... 118
5.4.8 Replacing a Fire Cylinder (Standard) ....................................................................................................................120
5.4.9 Charging Extinguishant .........................................................................................................................................127
5.4.10 Replacing a Fire Alarm Control Panel (Standard) ...............................................................................................130
5.4.11 Replacing an Emergency Light (Standard) ..........................................................................................................132
5.5 Replacing Fire Extinguishing System Devices (CE Kidde)......................................................................................133
5.5.1 Replacing a Smoke Detector (CE).........................................................................................................................133
5.5.2 Replacing a Heat Detector (CE) ............................................................................................................................135
5.5.3 Replacing Warning Signs (CE)..............................................................................................................................137
5.5.4 Replacing a StroBell (CE) .....................................................................................................................................140
5.5.5 Replacing a Buzzer (CE) .......................................................................................................................................142
5.5.6 Replacing the Extinguishant Discharge Abort (CE) ..............................................................................................144
5.5.7 Replacing a Fire Cylinder (CE) .............................................................................................................................146
5.5.8 Replacing the Extinguishant Control Panel (CE)...................................................................................................148
5.5.9 Replacing Batteries for the Extinguishant Control Panel (CE)..............................................................................151
5.5.10 Replacing an Emergency Light (CE)...................................................................................................................152
5.6 Replacing Fire Extinguishing System Devices (CE Tyco) .......................................................................................153
5.6.1 Replacing a Smoke Detector (CE).........................................................................................................................153
5.6.2 Replacing a Heat Detector (CE) ............................................................................................................................155
5.6.3 Replacing Warning Signs (CE)..............................................................................................................................156
5.6.4 Replacing an Internal Horn Strobe (CE)................................................................................................................158
5.6.5 Replacing an External Horn Strobe (CE)...............................................................................................................160

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5.6.6 Replacing a Fire Alarm Bell (CE)..........................................................................................................................163
5.6.7 Replacing the Extinguishant Abort Button (CE)....................................................................................................165
5.6.8 Replacing Batteries for the Extinguishant Control Panel (CE)..............................................................................168
5.6.9 Replacing a Fire Cylinder (CE) .............................................................................................................................169
5.6.10 Replacing the Extinguishant Control Panel (CE).................................................................................................172
5.6.11 Replacing an Emergency Light (CE)...................................................................................................................174
6 Emergency Operations.............................................................................................................177
6.1 Emergency Operations for Mains Failure.................................................................................................................177
6.2 Emergency Operations for Circuit Breaker Tripping................................................................................................178
6.3 Emergency Operations for Overload ........................................................................................................................178
6.4 Emergency Operations for Overtemperature ............................................................................................................179
6.5 Emergency Operations for the Management System Communication Failure .........................................................179
6.6 Emergency Operations When Pre-fab. Module Door Cannot Open.........................................................................180
6.7 Emergency Operations for Pre-fab. Module Door Open ..........................................................................................181
6.8 Emergency Operations for a Single Fire Alarm (Standard) ......................................................................................182
6.9 Emergency Operations for a Double Fire Alarm (Standard).....................................................................................184
6.10 FIRE RELAY Emergency Operations (CE)............................................................................................................186
6.11 LOCAL FIRE Emergency Operations (CE) ...........................................................................................................187
7 FusionModule1000 Emergency Exit Guide..........................................................................189
A Acronyms and Abbreviations................................................................................................190

FusionModule1000A40 IT Solution
Maintenance Guide (2016.05, AI Version)
1 O&M Precautions
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1
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 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 for a device which is powered 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.
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.
Replace batteries only with the ones of the same or equivalent type. Improper battery
replacement may cause an explosion.

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1 O&M Precautions
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Cooling System
Assign only professional engineers to perform O&M for the cooling system.
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 pre-fab.
module 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
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.
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 pre-fab. module.
Assign only qualified engineers to perform O&M for the fire extinguishing system.
Before maintaining the fire extinguishing system or its components, inform the related
administrative departments.
During fire extinguishing system commissioning, disconnect the solenoid valve, and
insert the fire cylinder safety pin to prevent agent release by mistake.

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2 Preparations
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2 Preparations
2.1 Tools
Table 2-1 Tools
Tools
Phillips screwdriver
M4/M6/M8
Flat-head screwdriver
(2–5 mm)
Adjustable wrench
Electrician's knife
Needle-nose pliers
Diagonal pliers
Crimping tool
Wire stripper
RJ45 crimping tool

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Tools
Cable cutter
Hex key
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
Socket wrench
ESD floor suction plate
N/A
The listed tools are for routine maintenance only. Prepare other tools as required.

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2.2 Obtaining Technical Documents
Table 2-2 Document list
Technical
Document
Function
Obtaining Method (Remarks)
FusionModule1000A
40 IT Solution
V200R002C00
Initial Configuration
Parameter Manual
(2016.05, AI
Version)
Describes the initial
configurations of each
system in the solution
and provides the initial
configuration tables and
device layout diagrams
for each system.
Obtain the document for the solution in
use.
Download this document from
http://e.huawei.com.
FusionModule1000A
40 IT Solution
V200R002C00
Quick Installation
Guide (2016.05, AI
Version)
Briefly describes how to
install a solution onsite
and provides the
installation diagrams.
Obtain the document for the solution in
use.
Download this document from
http://e.huawei.com.
FusionModule1000A
40 IT Solution
V200R002C00
Installation Guide
(2016.05, AI
Version)
Describes details about
how to install the
FusionModule1000.
Download this document from
http://e.huawei.com.
FusionModule1000A
40 IT Solution
V200R002C00
Commissioning
Guide (2016.05, AI
Version)
Describes details about
how to commission the
FusionModule1000.
Download this document from
http://e.huawei.com.
ECC500
V600R001C03 User
Manual
Describes how to
operate and maintain the
collector.
The ECC500 version in use prevails. If
the ECC500 version is ECC500
V600R001C03, see ECC500
V600R001C03 User Manual.
Download this document from
http://e.huawei.com.
iManager NetEco
Product Document -
(NetEco Version)
Provides guidance for
installing the monitoring
devices and configuring
the monitoring software.
The NetEco
Administrator Guide and
NetEco Commissioning
Guide mentioned in the
text are integrated into
the iManager NetEco
Product Documentation
(NetEco Version).
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
V600R007C50, see the iManager
NetEco Product Document -
(V600R007C50) for details.
Download this document from
http://e.huawei.com.

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Technical
Document
Function
Obtaining Method (Remarks)
iManager NetEco
(NetEco Version)
PowerEcho User
Manual
PowerEcho is
configured for iManager
NetEco V600R007C60
and later versions. This
document mainly
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
V600R007C60 PowerEcho User
Manual for details.
Download this document from
http://e.huawei.com.
UPS2000-G-(6
kVA-20 kVA) User
Manual
Describes how to
operate and maintain the
UPS.
Download this document from
http://e.huawei.com.
NetCol5000-A 20
kW Air-Cooled
In-Row Precision
Air Conditioner
User Manual
Describes how to
operate and maintain the
air conditioner.
Download this document from
http://e.huawei.com.
Gas extinguishing
controller documents
Describes how to install,
commission, and
maintain the gas
extinguishing controller.
Delivered with the fire control panel.
FusionModule1000A
V200R002C00&C10
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 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 engineer qualifications
Cooling System
Familiar with the cooling system configurations and the
operations for each core component in the FusionModule1000
With cooling engineer qualifications

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Field
Personnel Skill Requirement
Management
system
Familiar with the management system configurations and the
operations for each core component in the FusionModule1000
With ELV engineer qualifications
Fire extinguishing
system
Familiar with the fire extinguishing system configurations and the
operations for each core component in the FusionModule1000
With fire engineer qualifications
Lighting and
structural systems
Familiar with the overall configurations and layout of the
FusionModule1000
Experienced in maintaining the FusionModule1000
2.4 Contacting Huawei Technical Support
If a fault alarm persists after you locate and rectify the fault by following instructions in this
document, contact Huawei technical support for remote troubleshooting assistance.
When contacting Huawei technical support, you need to provide the following information:
Full name of the site where the fault alarm occurs
Name and phone number of the contact person
Fault scenario and detailed fault information
Table 2-4 Obtaining technical support fromHuawei
If...
Then...
Method
A critical alarm
is generated.
Refer to the
emergency
operation guide.
Clear the alarm by following the procedure
described in the emergency operation guide. If
no information is available, contact Huawei
technical support.
Contact Huawei
technical support.
Log in to http://e.huawei.com to obtain the
hotline of the desired region.
A non-critical
alarm is
generated.
Refer to alarm
handling cases or
obtain related
documentation.
Log in to http://e.huawei.com, and click
to obtain
help.
Browse or enter keywords to search for
related troubleshooting documents.
If access to documents is unavailable, upgrade the access rights as prompted.

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3 Maintenance
3.1 Routine Maintenance
Table 3-1 Routine maintenance checklist
Cate
gory
Item
Method
Expected
Result
Troubleshooting
Mana
geme
nt
syste
m
FusionMo
dule1000
alarms
Choose Alarm >
Current Alarms
on the home page
of the
management
system to view
alarms.
No alarm is
displayed in the
alarm
information area.
If an alarm is displayed in
the alarm information area,
perform the following
operations:
1. Clear the alarm by
following instructions in
iManager NetEco
Product Document -
(NetEco Version).
2. Check whether cables are
connected properly and
rectify faults.
Camera
images
and
coverage
Choose
Configuration >
Camera
Management >
Video Camera
Management,
right-click a
camera name on
the right side, and
view the video
images captured
by the camera.
You can view
the video
images.
If no video image is
displayed:
1. Connect the camera cable
again.
2. If the cable is correctly
connected, replace the
camera.
If the camera is normal but
no video image is displayed:
1. Connect the VCN500
cable again.
2. If the cable is correctly
connected, replace the
VCN500.

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Cate
gory
Item
Method
Expected
Result
Troubleshooting
The coverage of
the camera is
optimal.
If the area covered by the
camera is inappropriate,
adjust the camera coverage
by following the instructions
in documents delivered with
the camera.
Access
controller
communic
ation
status
Check the door
status list in the
management
system.
All door status
icons under the
access controller
blink.
If a door status icon is
dimmed (unavailable), check
the access controller and
network status.
3.2 Monthly Maintenance
3.2.1 Power Supply and Distribution System
Table 3-2 Monthly maintenance checklist for the power supply and distribution system
Item
Method
Expected
Result
Troubleshooting
Luminance
of the
three-phase
indicators
Check the
luminance of the
three-phase
indicators.
The
three-phase
power
indicators are
steady on.
Replace an indicator if it generates
no or dim light.
SPD
indicator
and SPD
circuit
breaker
status
Check the SPD
indicator and SPD
circuit breaker
status.
The SPD
indicator is
green.
If an SPD indicator is red, replace
the SPD in a PDC..
The SPD
circuit breaker
is switched on.
If an SPD circuit breaker is
switched to OFF, switch it to ON.
Buttons on
the PD510
electricity
meter panel
Push any button on
the PD510
electricity meter
panel.
The PD510
electricity
meter LCD
lights up and
displays
information
properly.
1. If the LCD does not display
information properly (no display
or fuzzy), check whether the
power cable is properly
connected.
2. If the power cable is correctly
connected, Replace the PD510
electricity meter.

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Item
Method
Expected
Result
Troubleshooting
UPS2000-G
running
status
Check the UPS
running
indicator.
View historical
alarms in the
Alarms menu.
The UPS
running
indicator is
steady
green.
There is no
historical
alarm
information
.
If the UPS is faulty, troubleshoot by
following instructions in
UPS2000-G-(6 kVA-20 kVA) User
Manual.
3.2.2 Cooling System
If a cooling component needs to be powered off for maintenance, take measures to prevent
device overheating before powering off the component.
Table 3-3 Monthly maintenance checklist for the cooling system
Item
Method
Expected
Result
Troubleshooting
Electric
heaters of
the 20 kW
air-cooled
precision
air
conditioner
s
Check electric
heaters.
The electric
heaters are
secure.
If an electric heater is loose, secure
it.
The electric
heater surface
is not
corroded.
If the surface of an electric heater is
corroded, replace the electric heater
by following instructions in
NetCol5000-A 20 kW Air-Cooled
In-Row Precision Air Conditioner
User Manual.
Floats of
the 20 kW
air-cooled
precision
air
conditioner
s
Check the floats.
The floats are
free from
scale.
If a float is covered by scale, clean
the float.
The floats are
working
properly.
If a float does not work properly,
perform replacement by following
instructions in NetCol5000-A 20 kW
Air-Cooled In-Row Precision Air
Conditioner User Manual.
Air filters
of the 20
kW
Check the air
filters.
The air filters
are blocked.
If an air filter is dirty and blocked,
clean the air filter (water cleaning is
recommended).

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Item
Method
Expected
Result
Troubleshooting
air-cooled
precision
air
conditioner
s
The air filters
are not
damaged or
misshapen.
If an air filter is damaged or
misshapen, replace air filters for a
20 kW air-cooled precision air
conditioner.
Screws
securing the
compressor
of the 20
kW
air-cooled
precision
air
conditioner
Check screws
securing the
compressor.
The
compressor
screws are
secure.
If a compressor fan screw is loose,
tighten the screw.
Service
valves of
the 20 kW
air-cooled
precision
air
conditioner
s
Check the
compressor service
valves.
The
compressor
service valves
have no oil
stains.
If a compressor service valve is
covered by oil stains, clean the oil
stains.
Compressor
running
sound of
the 20 kW
air-cooled
precision
air
conditioner
Listen to the
compressor
running sound.
No abnormal
noise is
generated.
If the compressor generates
abnormal noise, replace the
compressor by following
instructions in NetCol5000-A 20 kW
Air-Cooled In-Row Precision Air
Conditioner User Manual.
Evaporators
of the 20
kW
air-cooled
precision
air
conditioner
s
Check the
evaporators.
No foreign
matter exists
on the
evaporator
surfaces.
If an evaporator is covered by
foreign matter, clean the foreign
matter.
Refrigerant
pipes of the
20 kW
air-cooled
precision
air
conditioner
s
Check the
refrigerant pipes.
The refrigerant
pipes do not
leak, are not
corroded, and
are properly
wrapped with
thermal
insulation
foam.
In the case of pipe leakage, pipe
corrosion, or thermal insulation
foam damage, repair the leakage
and corrosion, and rewrap the
thermal insulation foam.

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Item
Method
Expected
Result
Troubleshooting
The refrigerant
pipe support is
secure and
intact.
If the pipe support is worn out or
not properly fixed, replace and
tighten the support by following
instructions in NetCol5000-A 20 kW
Air-Cooled In-Row Precision Air
Conditioner User Manual.
Thermal
insulation
foam on the
humidifier/
condensate
drainpipe
Check the thermal
insulation foam.
The thermal
insulation
foam is in
good condition
and free from
condensation.
If there is condensation under a
pipe, replace the thermal insulation
foam.
3.2.3 Monitoring System
Table 3-4 Monthly maintenance checklist for the monitoring system
Item
Method
Expected
Result
Troubleshooting
Event and
operation
logs in the
RH2288
server
Choose System
Event Log in the
navigation tree.
Normal system
events are
displayed.
If a system event exception is found,
troubleshoot by referring to
documents delivered with the
RH2288 server.
ECC500
collector
Check the
indicators of the
ECC500 main
control module.
The running
indicator is
steady on.
If the running indicator blinks at
short intervals, check that power
supply of the ECC500 collector
is normal, and check that the
communications cable between
the ECC500 and the host is
properly connected.
If the alarm indicator is on, view
and handle the alarms.
VCN500
indicator
Check the
VCN500 indicator.
The VCN500
indicator is
steady green.
If the indicator is in an abnormal
status, troubleshoot by following
instructions in VCN500 Product
Documentation.