Huawei NetCol8000-A Series User manual
NetCol8000-A(050, 100) In-room Air Cooled
Smart Cooling Product
User Manual
Issue 12
Date 2020-10-28
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2020. 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 specied 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 eort 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: https://www.huawei.com
Email: [email protected]
Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd. i
About This Document
Purpose
This document applies to the following NetCol8000-A series in-room air cooled
smart cooling product:
● NetCol8000-A100: NetCol8000-A100 in-room air cooled smart cooling
product that uses the downow mode.
● NetCol8000-A050: NetCol8000-A050 in-room air cooled smart cooling
product that uses the downow mode.
This document describes the NetCol8000-A(050, 100) in-room air cooled smart
cooling product, in terms of its product description, installation, commissioning,
controller, and operation and maintenance (O&M), helping readers to learn how
to use and maintain the smart cooling product.
Disclaimer
This product is professional equipment. Its noise meets the requirements of GB/T
19413-2010
Unitary air-conditioners for computer and data processing room
. It is
applicable to places where the common public oce is not easy to touch. If an
oce is set up near the equipment room, sound insulation measures must be
taken for the equipment room to meet the GB50174-2017 data center design
specications.
Intended Audience
This document is intended for:
● Sales personnel
● Technical support personnel
● System engineers
● Hardware installation personnel
● Commissioning engineers
● Data conguration engineers
● Maintenance personnel
NetCol8000-A(050, 100) In-room Air Cooled Smart
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User Manual About This Document
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Symbol Conventions
The symbols that may be found in this document are dened as follows.
Symbol Remarks
Indicates a hazard with a high level of risk
which, if not avoided, will result in death or
serious injury.
Indicates a hazard with a medium level of risk
which, if not avoided, could result in death or
serious injury.
Indicates a hazard with a low level of risk
which, if not avoided, could 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.
NOTICE is used to address practices not related
to personal injury.
Supplements the important information in the
main text.
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 the changes made in earlier issues.
Issue 12 (2020-10-28)
Added 6 FAQ.
Issue 11 (2020-01-13)
Updated the safety information.
Issue 10 (2019-01-15)
Updated the manual name and so on.
Issue 09 (2018-08-05)
Modied the section of environmental requirements.
NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual About This Document
Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd. iii
Issue 08 (2018-04-18)
Add the description for low-temperature component.
Issue 07 (2018-01-29)
Modied the charge of refrigerant.
Issue 06 (2016-11-26)
Modied the description for ACC Introduction.
Issue 05 (2016-01-25)
Modied the description for teamwork networking.
Issue 04 (2015-06-24)
Changed the name of the user manual to
NetCol8000-A(050, 100) In-room Air
Cooled Smart Cooling Product User Manual.
Deleted descriptions about fan congurations.
Updated nitrogen injection and pressure preservation values.
Modied the controller section.
Modied the procedure for replacing an indoor fan.
Issue 03 (2014-10-10)
Modied the electric control box.
Issue 02 (2014-07-30)
Updated the document description.
Issue 01 (2013-12-10)
This issue is the rst ocial release.
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Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd. iv
Contents
About This Document................................................................................................................ ii
1 Safety Information.................................................................................................................. 1
1.1 General Safety.......................................................................................................................................................................... 1
1.2 Personnel Requirements....................................................................................................................................................... 4
1.3 Electrical Safety........................................................................................................................................................................4
1.4 Installation Environment Requirements.......................................................................................................................... 6
1.5 Mechanical Safety................................................................................................................................................................... 8
1.6 Cooling System Safety.........................................................................................................................................................10
1.7 Others....................................................................................................................................................................................... 11
2 Product Description.............................................................................................................. 12
2.1 Model Description................................................................................................................................................................ 12
2.2 Composition............................................................................................................................................................................ 13
2.2.1 Indoor Unit.......................................................................................................................................................................... 13
2.2.2 Controller..............................................................................................................................................................................16
2.2.2.1 Appearance and Ports.................................................................................................................................................. 16
2.2.2.2 Functions and Features................................................................................................................................................ 18
2.2.3 Monitoring System............................................................................................................................................................19
2.2.4 Ports....................................................................................................................................................................................... 19
2.3 Environment Specications............................................................................................................................................... 20
2.3.1 Installation requirements................................................................................................................................................20
2.3.2 Environmental Requirements........................................................................................................................................ 20
2.4 Performance Parameters.................................................................................................................................................... 21
3 Installation Guide..................................................................................................................24
3.1 Installation Precautions...................................................................................................................................................... 24
3.1.1 Precautions.......................................................................................................................................................................... 24
3.1.2 Tools....................................................................................................................................................................................... 25
3.1.3 Material Preparations...................................................................................................................................................... 28
3.1.4 Structural Specications.................................................................................................................................................. 35
3.1.5 Installation Layout............................................................................................................................................................ 36
3.1.6 Installation Requirements...............................................................................................................................................39
3.2 Installation Process...............................................................................................................................................................40
3.3 Unpacking................................................................................................................................................................................40
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3.3.1 Removing the Package.................................................................................................................................................... 41
3.3.2 Checking Fittings............................................................................................................................................................... 42
3.4 Installing an Indoor Unit.................................................................................................................................................... 42
3.4.1 Installing Supports............................................................................................................................................................ 42
3.4.2 Lowing an Indoor Fan...................................................................................................................................................... 44
3.5 Connecting Pipelines............................................................................................................................................................51
3.5.1 Exhausting Nitrogen......................................................................................................................................................... 52
3.5.2 Pipeline Ports on the Indoor Unit................................................................................................................................ 53
3.5.3 Routing Refrigerant Pipes...............................................................................................................................................55
3.5.4 Connecting Water Pipes.................................................................................................................................................. 58
3.5.5 Charge Nitrogen................................................................................................................................................................ 59
3.6 Electric Cable Connections.................................................................................................................................................61
3.6.1 Cables to be Connected and Precautions..................................................................................................................61
3.6.2 Electrical Ports of an Indoor Unit................................................................................................................................ 62
3.6.3 Connecting the Power Cable to the Indoor Unit.................................................................................................... 64
3.6.4 Connecting the Voltage Jumper................................................................................................................................... 65
3.6.5 Connecting Signal Cables............................................................................................................................................... 65
3.6.5.1 Preparations Before Connecting Signal Cables....................................................................................................66
3.6.5.2 Connecting Outdoor Unit On/O Signal Cable...................................................................................................68
3.6.5.2.1 Connecting NetCol500-A072.................................................................................................................................. 68
3.6.5.2.2 Connecting NetCol500-A088.................................................................................................................................. 68
3.6.5.3 Connecting a Water Sensor (Optional)..................................................................................................................68
3.6.6 Teamwork Networking and Monitoring.................................................................................................................... 68
3.7 Removing the Protective Device from the NetCol8000-A...................................................................................... 72
3.7.1 Removing the Protective Device from the Infrared Humidier Lamp............................................................ 72
3.7.2 Connecting the signal cable to the HWA cable terminal.................................................................................... 73
3.7.3 Removing the Sheet Metals for Transporting the Compressor......................................................................... 75
3.8 Installation Verication.......................................................................................................................................................76
4 Power-On Commissioning................................................................................................... 79
4.1 Commissioning Preparations............................................................................................................................................ 79
4.2 Vacuumization and Partially Charging in Refrigerant............................................................................................. 79
4.2.1 Charging the Refrigerant and Refrigerant Oil......................................................................................................... 80
4.2.2 Vacuumization.................................................................................................................................................................... 80
4.2.3 Procedure to Partially Charging in Refrigerant....................................................................................................... 84
4.3 Commissioning...................................................................................................................................................................... 86
4.3.1 Circuit Breakers.................................................................................................................................................................. 86
4.3.2 Commissioning Procedure.............................................................................................................................................. 88
4.4 Check After the Commissioning...................................................................................................................................... 89
5 ACC Introduction................................................................................................................... 91
5.1 Home Screen.......................................................................................................................................................................... 91
5.2 Menu Hierarchy..................................................................................................................................................................... 93
5.3 Quick Settings........................................................................................................................................................................ 94
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5.4 Initial Conguration............................................................................................................................................................. 95
5.4.1 User Right Authentication.............................................................................................................................................. 95
5.4.2 Start and Shutdown..........................................................................................................................................................96
5.4.3 Setting Temperature and Humidity Values.............................................................................................................. 97
5.4.4 Setting Communications Parameters (IP Settings)............................................................................................... 98
5.4.5 Setting Communications Parameters (Modbus Settings)................................................................................... 99
5.4.6 Setting Communications Parameters (SNMP Settings).....................................................................................101
5.4.7 Setting Teamwork Control Parameters................................................................................................................... 106
5.4.8 (Optional) Setting Alarm Parameters......................................................................................................................112
5.5 Commissioning Guide....................................................................................................................................................... 113
5.5.1 Entering Diagnostic Mode........................................................................................................................................... 113
5.5.2 Commissioning Smart Cooling Product Components........................................................................................ 114
5.6 Querying Parameters........................................................................................................................................................ 115
5.6.1 Querying Temperature and Humidity Curves....................................................................................................... 115
5.6.2 Querying Alarms............................................................................................................................................................. 116
5.6.3 Querying Logs.................................................................................................................................................................. 118
5.6.4 Querying Device Runtime............................................................................................................................................ 119
5.6.5 Querying Component Status.......................................................................................................................................119
5.6.6 Querying System Parameters..................................................................................................................................... 120
5.6.7 Querying Version Details.............................................................................................................................................. 121
5.7 Changing Parameters........................................................................................................................................................ 122
5.7.1 Deleting Historical Alarms........................................................................................................................................... 122
5.7.2 Deleting Logs....................................................................................................................................................................123
5.7.3 Exporting Data................................................................................................................................................................. 123
5.7.4 Clearing the Runtime.....................................................................................................................................................126
5.7.5 Calibrating a Sensor....................................................................................................................................................... 126
5.7.6 Calibrating the Screen................................................................................................................................................... 127
5.8 How to Perform Quick Settings.....................................................................................................................................129
5.9 How to Set the Language, Date, or Time.................................................................................................................. 129
5.10 How to Change a Password......................................................................................................................................... 130
5.11 How to Restore the Initial Password......................................................................................................................... 131
5.12 How to Troubleshoot the Fault When the System Is in Upgrade Mode.......................................................132
5.13 How to Manually Clear Alarms...................................................................................................................................133
5.14 How to Enable a Humidity and Temperature Sensor..........................................................................................134
5.15 How to View Teamwork Control Information........................................................................................................134
5.16 Which Parameters Are Restored to Default Values After Default Settings Are Operated..................... 135
5.17 How to Change the SSH Access Password.............................................................................................................. 136
5.18 Rectifying Faults of the E-label Identication Board...........................................................................................138
5.19 How to Import a Certicate and Key........................................................................................................................ 139
6 FAQ......................................................................................................................................... 141
6.1 How Do I Query the Setting of a Parameter Before Change?............................................................................141
7 System Operation and Maintenance..............................................................................142
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7.1 Routine Maintenance........................................................................................................................................................ 142
7.1.1 Routine Maintenance Overview.................................................................................................................................142
7.1.2 Filters................................................................................................................................................................................... 143
7.1.3 Indoor Fans........................................................................................................................................................................144
7.1.4 Compressors......................................................................................................................................................................145
7.1.5 Infrared Humidier......................................................................................................................................................... 146
7.1.6 Electrical Heaters............................................................................................................................................................ 149
7.1.7 Other Cooling System Components......................................................................................................................... 150
7.1.8 Electric Control System................................................................................................................................................. 152
7.2 Alarm Reference..................................................................................................................................................................155
7.3 Troubleshooting.................................................................................................................................................................. 179
7.4 Parts Replacement............................................................................................................................................................. 183
7.4.1 Replacing the Filters.......................................................................................................................................................183
7.4.2 Replacing an Indoor Fan...............................................................................................................................................184
7.4.3 Replacing a Compressor............................................................................................................................................... 188
7.4.4 Replacing the Infrared Humidier Lamps.............................................................................................................. 191
7.4.5 Replacing Electrical Heaters........................................................................................................................................ 197
A Support Specications....................................................................................................... 199
B Electrical Control Boxes.....................................................................................................201
C Acronyms and Abbreviations........................................................................................... 203
D Electrical Schematic Diagram (NetCol8000-A050).................................................... 204
E Electrical Schematic Diagram (NetCol8000-A100).....................................................205
F Controller Menu Structure................................................................................................206
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1 Safety Information
1.1 General Safety
Statement
Before installing, operating, and maintaining the equipment, read this document
and observe all the safety instructions on the equipment and in this document.
The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this
document do not cover all the safety instructions. They are only supplements to
the safety instructions. Huawei will not be liable for any consequence caused by
the violation of general safety requirements or design, production, and usage
safety standards.
Ensure that the equipment is used in environments that meet its design
specications. Otherwise, the equipment may become faulty, and the resulting
equipment malfunction, component damage, personal injuries, or property
damage are not covered under the warranty.
Follow local laws and regulations when installing, operating, or maintaining the
equipment. The safety instructions in this document are only supplements to local
laws and regulations.
Huawei will not be liable for any consequences of the following circumstances:
● Operation beyond the conditions specied in this document
● Installation or use in environments which are not specied in relevant
international or national standards
● Unauthorized modications to the product or software code or removal of the
product
● Failure to follow the operation instructions and safety precautions on the
product and in this document
● Equipment damage due to force majeure, such as earthquakes, re, and
storms
● Damage caused during transportation by the customer
● Storage conditions that do not meet the requirements specied in this
document
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General Requirements
● Do not install, use, or operate outdoor equipment and cables (including but
not limited to moving equipment, operating equipment and cables, inserting
connectors to or removing connectors from signal ports connected to outdoor
facilities, working at heights, and performing outdoor installation) in harsh
weather conditions such as lightning, rain, snow, and level 6 or stronger wind.
● Before installing, operating, or maintaining the equipment, remove any
conductive objects such as watches or metal jewelry like bracelets, bangles,
and rings to avoid electric shock.
● When installing, operating, or maintaining the equipment, wear personal
protective equipment such as insulation gloves, goggles, and safety clothing,
helmet, and shoes, as shown in the following gure.
● Follow the specied procedures for installation, operation, and maintenance.
● Before handling a conductor surface or terminal, measure the contact point
voltage and ensure that there is no risk of electric shock.
● After installing the equipment, remove idle packing materials such as cartons,
foam, plastics, and cable ties from the equipment area.
● In the case of a re, immediately leave the building or the equipment area,
and turn on the re alarm bell or make an emergency call. Do not enter the
building on re in any case.
● Do not stop using protective devices. Pay attention to the warnings, cautions,
and related precautionary measures in this document and on the equipment.
Promptly replace warning labels that have worn out.
● Keep irrelevant people away from the equipment. Only operators are allowed
to access the equipment.
● Use insulated tools or tools with insulated handles, as shown in the following
gure.
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● All cable holes should be sealed. Seal the used cable holes with restop putty.
Seal the unused cable holes with the caps delivered with the cabinet. The
following gure shows the criteria for correct sealing with restop putty.
● Do not scrawl, damage, or block any warning label on the equipment.
● When installing devices, use a torque wrench with a proper measurement
range to tighten bolts. Ensure that the wrench is not skewed and the torque
error does not exceed 10%.
● Do not work with power on during installation.
● Repaint any paint scratches caused during equipment transportation or
installation in a timely manner. Equipment with scratches cannot be exposed
to an outdoor environment for a long period of time.
● Before operations, ensure that the equipment is rmly secured to the oor or
other solid objects, such as a wall or an installation rack.
● Do not use water to clean electrical components inside or outside of a
cabinet.
● Do not change the structure or installation sequence of equipment without
permission.
● Do not touch a running fan with your ngers, components, screws, tools, or
boards before the fan is powered o or stops running.
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Personal Safety
● If there is a probability of personal injury or equipment damage during
operations on the equipment, immediately stop the operations, report the
case to the supervisor, and take feasible protective measures.
● To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
to telecommunication network voltage (TNV) circuits.
● Do not power on the equipment before it is installed or conrmed by
professionals.
1.2 Personnel Requirements
● Personnel who plan to install or maintain Huawei equipment must receive
thorough training, understand all necessary safety precautions, and be able to
correctly perform all operations.
● Only qualied professionals or trained personnel are allowed to install,
operate, and maintain the equipment.
● Only qualied professionals are allowed to remove safety facilities and inspect
the equipment.
● Personnel who will operate the equipment, including operators, trained
personnel, and professionals, should possess the local national required
qualications in special operations such as high-voltage operations, working
at heights, and operations of special equipment.
● Professionals: personnel who are trained or experienced in equipment
operations and are clear of the sources and degree of various potential
hazards in equipment installation, operation, maintenance
● Trained personnel: personnel who are technically trained, have required
experience, are aware of possible hazards on themselves in certain operations,
and are able to take protective measures to minimize the hazards on
themselves and other people
● Operators: operation personnel who may come in contact with the
equipment, except trained personnel and professionals
● Only professionals or authorized personnel are allowed to replace the
equipment or components (including software).
1.3 Electrical Safety
Grounding
● For the equipment that needs to be grounded, install the ground cable rst
when installing the equipment and remove the ground cable last when
removing the equipment.
● Do not damage the ground conductor.
● Do not operate the equipment in the absence of a properly installed ground
conductor.
● Ensure that the equipment is connected permanently to the protective
ground. Before operating the equipment, check its electrical connection to
ensure that it is securely grounded.
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General Requirements
Use dedicated insulated tools when performing high-voltage operations.
AC and DC Power
D ANGER
Do not connect or disconnect power cables with power on. Transient contact
between the core of the power cable and the conductor will generate electric arcs
or sparks, which may cause re or personal injury.
● If a "high electricity leakage" tag is attached on the equipment, ground the
protective ground terminal on the equipment enclosure before connecting the
AC power supply; otherwise, electric shock as a result of electricity leakage
may occur.
● Before installing or removing a power cable, turn o the power switch.
● Before connecting a power cable, check that the label on the power cable is
correct.
● If the equipment has multiple inputs, disconnect all the inputs before
operating the equipment.
● A circuit breaker equipped with a residual current device (RCD) is not
recommended.
● A damaged power cable must be replaced by the manufacturer, service agent,
or professionals to avoid risks.
● High voltage operations and installation of AC-powered facilities must be
performed by qualied personnel.
Cabling
● When routing cables, ensure that a distance of at least 30 mm exists between
the cables and heat-generating components or areas. This prevents damage
to the insulation layer of the cables.
● Do not route cables behind the air intake and exhaust vents of the
equipment.
● Ensure that cables meet the VW-1 or ZB ame spread rating requirements or
higher.
● Bind cables of the same type together. When routing cables of dierent types,
ensure that they are at least 30 mm away from each other.
● If an AC input power cable is connected to the cabinet from the top, bend the
cable in a U shape outside the cabinet and then route it into the cabinet.
● When the temperature is low, violent impact or vibration may damage the
plastic cable sheathing. To ensure safety, comply with the following
requirements:
– Cables can be laid or installed only when the temperature is higher than
0°C. Handle cables with caution, especially at a low temperature.
– Cables stored at subzero temperatures must be stored at room
temperature for at least 24 hours before they are laid out.
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● Do not perform any improper operations, for example, dropping cables
directly from a vehicle.
● When selecting, connecting, and routing cables, follow local safety regulations
and rules.
ESD
NO TICE
The static electricity generated by human bodies may damage the electrostatic-
sensitive components on boards, for example, the large-scale integrated (LSI)
circuits.
● Wear ESD gloves or a well-grounded ESD wrist strap when touching the
device or handling boards or application-specic integrated circuits (ASICs).
● When holding a board, hold its edge without touching any components. Do
not touch the components with your bare hands.
● Package boards with ESD packaging materials before storing or transporting
them.
Figure 1-1 Wearing an ESD wrist strap
Neutral-Ground Voltage
It is recommended that the three-phase loads be equalized and the neutral-
ground voltage be kept at less than 2 V to meet power distribution requirements.
1.4 Installation Environment Requirements
● To prevent re due to high temperature, ensure that the ventilation vents or
heat dissipation system are not blocked when the equipment is running.
● Install the equipment in an area far away from liquids. Do not install it under
areas prone to condensation, such as under water pipes and air exhaust vents,
or areas prone to water leakage, such as air conditioner vents, ventilation
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vents, or feeder windows of the equipment room. Ensure that no liquid enters
the equipment to prevent faults or short circuits.
● If any liquid is detected inside the equipment, immediately disconnect the
power supply and contact the administrator.
● Do not expose the equipment to ammable or explosive gas or smoke. Do
not perform any operation on the equipment in such environments.
● Ensure that the equipment room provides good heat insulation, and the walls
and oor are dampproof.
● Install a rat guard at the door of the equipment room.
Installation at Heights
● Working at heights refers to operations that are performed at least 2 meters
above the ground.
● Do not work at heights if the steel pipes are wet or other potential danger
exists. After the preceding conditions no longer exist, the safety director and
relevant technical personnel need to check the involved equipment. Operators
can begin working only after obtaining consent.
● When working at heights, comply with local relevant laws and regulations.
● Only trained and qualied personnel are allowed to work at heights.
● Before working at heights, check the climbing tools and safety gears such as
safety helmets, safety belts, ladders, springboards, scaolding, and lifting
equipment. If they do not meet the requirements, take corrective measures or
disallow working at heights.
● Wear personal protective equipment such as the safety helmet and safety belt
or waist rope and fasten it to a solid structure. Do not mount it on an
insecure moveable object or metal object with sharp edges. Make sure that
the hooks will not slide o.
● Set a restricted area and eye-catching signs for working at heights to warn
away irrelevant personnel.
● Carry the operation machinery and tools properly to prevent them from
falling o and causing injuries.
● Personnel involving working at heights are not allowed to throw objects from
the height to the ground, or vice versa. Objects should be transported by
tough slings, hanging baskets, highline trolleys, or cranes.
● Ensure that guard rails and warning signs are set at the edges and openings
of the area involving working at heights to prevent falls.
● Do not pile up scaolding, springboards, or other sundries on the ground
under the area involving working at heights. Do not allow people to stay or
pass under the area involving working at heights.
● Inspect the scaolding, springboards, and workbenches used for working at
heights in advance to ensure that their structures are solid and not
overloaded.
● Any violations must be promptly pointed out by the site manager or safety
supervisor and the involved personnel should be prompted for correction.
Personnel who fail to stop violations will be forbidden from working.
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1.5 Mechanical Safety
Hoisting Devices
● Do not walk under hoisted objects.
● Only trained and qualied personnel should perform hoisting operations.
● Check that hoisting tools are available and in good condition.
● Before hoisting objects, ensure that hoisting tools are rmly secured onto a
load-bearing object or wall.
● Ensure that the angle formed by two hoisting cables is no more than 90
degrees, as shown in the following gure.
● Do not drag steel ropes and hoisting tools or bump hoisted objects against
hard objects during hoisting.
Using Ladders
● Use wooden or berglass ladders when you need to perform live working at
heights.
● When a step ladder is used, ensure that the pull ropes are secured and the
ladder is held rm.
● Before using a ladder, check that it is intact and conrm its load bearing
capacity. Do not overload it.
● Ensure that the ladder is securely positioned. The recommended angle for a
ladder against the oor is 75 degrees, as shown in the following gure. An
angle rule can be used to measure the angle. Ensure that the wider end of the
ladder is at the bottom, or protective measures have been taken at the
bottom to prevent the ladder from sliding.
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● When climbing a ladder, take the following precautions to reduce risks and
ensure safety:
– Keep your body steady.
– Do not climb higher than the fourth rung of the ladder from the top.
– Ensure that your body's center of gravity does not shift outside the legs
of the ladder.
Drilling Holes
When drilling holes into a wall or oor, observe the following safety precautions:
NO TICE
Do not drill holes into the equipment. Doing so may aect the electromagnetic
shielding of the equipment and damage components or cables inside. Metal
shavings from drilling may short-circuit boards inside the equipment.
● Obtain the consent from the customer and subcontractor before drilling.
● Wear goggles and protective gloves when drilling holes.
● When drilling holes, protect the equipment from shavings. After drilling, clean
up any shavings that have accumulated inside or outside the equipment.
Moving Heavy Objects
D ANGER
When removing a heavy or unstable component from a cabinet, be aware of
unstable or heavy objects on the cabinet.
● Be cautious to avoid injury when moving heavy objects.
NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual 1 Safety Information
Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd. 9
● When moving the equipment by hand, wear protective gloves to prevent
injuries.
● Move or lift the equipment by holding its handles or lower edges. Do not hold
the handles of modules (such as power supply units, fans, and boards) that
are installed in the equipment because they cannot support the weight of the
equipment.
● Avoid scratching the cabinet surface or damaging cabinet components and
cables during equipment transportation.
● When transporting the equipment using a forklift truck, ensure that the forks
are properly positioned to ensure that the equipment does not topple. Before
moving the equipment, secure it to the forklift truck using ropes. When
moving the equipment, assign dedicated personnel to take care of it.
● Choose railways, sea, or a road with good condition for transportation to
ensure equipment safety. Avoid tilt or jolt during transportation.
● Move a cabinet with caution. Any bumping or falling may damage the
equipment.
1.6 Cooling System Safety
Welding
● At least two persons are required on a welding site.
● A welder must have a work permit.
● A welding site must be free from inammables.
● Ensure that a re extinguisher, wet wiper, and water container are available.
● A burning welding torch must not be placed on a component or on the oor,
and must not be placed in a metal container with acetylene and oxygen.
Otherwise, the gas may leak and cause a re.
● High-temperature pipes after welding must be promptly cooled.
● Do not weld or cut on pressurized containers or pipes. Electric devices must be
powered o before welding.
High Temperature and Pressure
● When maintaining or replacing components, pay attention to high-
temperature components (such as the compressor, refrigerant pipe, and
electric heater) to prevent scalds.
● When maintaining or replacing components, pay attention to high-pressure
components (such as the compressor and refrigerant pipe) to prevent the
refrigerant system from being cracked or exploded due to misoperations.
NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual 1 Safety Information
Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd. 10
Refrigerant Frostbite
Refrigerant leakage may cause frostbite. Take protective measures (for example,
wear antifreeze gloves) when handling refrigerant.
Storage and Recycling
● Do not store devices near a heat source or under direct sunshine.
● Keep devices away from re or high-temperature objects, especially devices
injected with pressurized nitrogen or refrigerant; otherwise, explosion or
refrigerant leakage may occur, causing personal injury.
● The sign indicates that the product cannot be disposed of with other
wastes that have a shell in European Union (EU) areas. To avoid environment
pollution and harm to human health, wastes must be classied and recycled.
This also promotes resource reuse. When recycling a device, ll in the device
information in the recycling collection system or contact your dealer for help.
The dealer can help you recycle devices in a safe and environment-friendly
way.
1.7 Others
Exercise caution when shutting down the smart cooling product. Doing so may
cause equipment and room overheating, which will damage the equipment.
NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual 1 Safety Information
Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd. 11
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