Vertiv Liebert XDH User manual

Liebert® XDH
User Manual
High Heat Density Precision Air Conditioning

Copyright by Vertiv Co. Ltd.
The content in this document is subject to change without notice. All rights, including rights of translation,
reproduced by printing, copying or similar methods, and even of parts, are reserved. Violators will be liable for
damages. All rights, including rights deriving from patent license or registration of a utility model or design,
are reserved. No part of this document may be reproduced or transmitted in any form or by any means
without the prior written consent of Vertiv Co. Ltd.
Notice
The purchased products, services, and features are stipulated by the contract made between Vertiv Co.,
and the customer. All or part of the products, services, and features described in this document may not be
within the purchasing scope or the usage scope. Unless otherwise specied 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 eort has been made in the preparation of this document to ensure the accuracy of
the contents, but all statements, information, and recommendations in this document do not constitute a
warranty of any kind, express or implied.
Vertiv Co., Ltd.
China
Homepage: www.vertiv.com
E-mail: [e-mail]
Customer service hotline: [phone]
Asia Pacic
Homepage: www.vertiv.com.
E-mail: [e-mail]
For Technical Support, users may contact the nearest Vertiv Co. local sales oice or service centre.

Purpose of the Document
This document applies to the series of precision air conditioners and cooling solutions which maintain optimal
environmental control of technological ecosystems at minimal operating costs. This document gives an
overview of the specications, installation, commissioning, and maintenance procedures with troubleshooting
from the user perspective. The gures used in this document are for reference only.
Please read this manual carefully before installing, maintaining, and troubleshooting.
Liebert XDH precision air conditioners is professional device, it is only for professionals and they are adapted to
the place where entry is restricted for normal people.
Styling used in this Guide
The styles used in the manual will be dened as mentioned in the following table:
Situation Description
Warning/Danger/Cauon • The Warning/Danger/Caution note indicates a hazardous or potentially
harmful situation that can result in death or injury. It also indicates in-
structions that need to be adhered to, failing which may result in danger
and safety issues thereby having an adverse eect on the reliability of
the device and security. Even for practices not related to physical injury,
to avoid equipment damage, performance degradation, or interruption in
service, follow the warning instruction.
Note
• The Note section indicates additional and useful information. It also calls
attention to best practices and industry-best protocols that are stan-
dardized and help make maximum utilization of the resources at hand.
Helpful information related to the product also comes under the Note
heading, helping the users with the denitions, concepts, and terminolo-
gies used in the manual.
Version History
Version Revision Date Issue Changes
1.0 26.03.2019 ---

Safety Precautions and Measures
The important safety precautions and measures that should be followed during the installation and
maintenance are described in the following sections.
Read the manual prior to installation and operation of the unit. Only qualied personnel should move, install,
or service this equipment.
The user reads and considers all the precautions, compliance, and safety measures before working on
the equipment. The unit control must be used exclusively for the purpose which it is intended for; the
manufacturer takes no liability for incorrect use or a modication to the unit control.
Adhere to all the Warnings and Cautionary measures included in the manual.
Please read this manual carefully before installing, maintaining and troubleshooting; especially the
Warning/Danger/Caution information in the User Guide. Apart from the User Guide, also pay attention
to the warning labels on the unit and its components.
This manual is retained for the entire service life of the unit. The user must read all the precautions, danger,
warnings, and cautionary measures mentioned in the manual prior to carrying out any operations on the unit.
Each unit is equipped with an electric insulation which allows the users to work in safe conditions. The main
switch is positioned on the electrical panel cover; Open the right door to access it. Before any maintenance
operation, switch o the unit with this electrical insulation device to eliminate risks such as electrical shocks,
burns, automatic restarting, moving parts, and remote control. The panel key, supplied along with the unit,
must be kept by the personnel responsible for the maintenance. The protective covers can be removed after
the electric power has been cut o by opening the main switch.
In the following sections, notice the various cautionary measures and warnings that need to be read carefully
prior to installing or operating the system.
Disconnect the local and remote power supplies prior to working with the unit.
Prior to the installation process, read all the instructions, verify if all the parts are in place, and check the
nameplate to ensure the voltage matches the available utility power for the unit.
The controller doesn’t isolate power from the unit even in the O mode, and some internal components still
require and receive power during the O mode.
If the unit door is open while the fans are operating, the airow may result in abrupt slamming of the door
resulting in injury. Another aspect is the presence of small objects in the fans bay which may result in object
ejection during the fan start-up and there is a probable risk of being hit by these objects leading to grievous
injury as well as causing equipment damage.
The unit contains uids and gases under high pressure. Therefore, the pressure should be relieved before
working with the piping.

Some components can be extremely hot during the unit operation. Therefore, allow suicient time for the
unit to cool down before working with the unit cabinet. Handle the unit with extreme caution and wear safety
equipment such as protective gloves, safety shoes, and arm protection while working with the hot components.
There is a risk of leaking water that can cause damage to the equipment as well as the building. There should
be an eective water drain connection and facilities. Installation should be precise. Implementation of the
application and service practices should be suitable and fault-free. Not complying with these norms will result
in water leakage from the unit. Water leakage can result in massive damage and loss of critical equipment in the
hosting ecosystem. Therefore, care should be taken to ensure that the unit must not be located directly above
any equipment that could sustain damage due to water and excessive moisture. Using a leak detection system
for the unit and system supply lines are recommended by Vertiv Co.

Vertiv | Liebert XDH | User Manual i
Table of Contents
Chapter 1: Product Overview................................................................................................................................................................................1
1.1.Product Introduction..................................................................................................................................................................................................1
1.2.Model Description......................................................................................................................................................................................................2
1.3.Model Nomenclature...............................................................................................................................................................................................3
1.4.Components.....................................................................................................................................................................................................................3
1.4.1.Micro-channel Evaporator.................................................................................................................................................................... 3
1.4.2.EC Fan..................................................................................................................................................................................................................... 3
1.4.3.Electronic Expansion Valve (EEV)...............................................................................................................................................4
1.4.4.Air Filter .................................................................................................................................................................................................................4
1.4.5.Filter Dryer...........................................................................................................................................................................................................4
1.4.6.Drainage Pump...............................................................................................................................................................................................4
1.4.7.Microprocessor Controller....................................................................................................................................................................4
1.4.8.Power Module ..................................................................................................................................................................................................4
Chapter 2: Pre-Installation.....................................................................................................................................................................................5
2.1.Equipment Room Requirements..................................................................................................................................................................5
2.2.Installation Space Requirements................................................................................................................................................................6
2.2.1.Maintenance Space Requirements for XDH......................................................................................................................6
2.3.Storage & Operating Environmental Requirements.................................................................................................................8
2.3.1.Operating Environment........................................................................................................................................................................... 8
2.3.2.Storage Environment...............................................................................................................................................................................8
2.4.Refrigerant Requirements.................................................................................................................................................................................9
2.5.Transportation, Unpacking and Inspection.......................................................................................................................................9
2.5.1.Transportation and Movement.........................................................................................................................................................9
2.5.2.Unpacking.........................................................................................................................................................................................................10

Vertiv | Liebert XDH | User Manual ii
2.6.Inspection..........................................................................................................................................................................................................................11
Chapter 3: Mechanical Installation (Site Preparation)...........................................................................................................12
3.1.Installation Notes.......................................................................................................................................................................................................12
3.2.System Installation Layout..............................................................................................................................................................................12
3.2.1.Overall Layout of the System..........................................................................................................................................................12
3.2.2.Schematic System Installation Diagram .............................................................................................................................13
3.2.3.Ball Valves on XDP and XDH Units..........................................................................................................................................15
3.2.4.Mechanical Parameters.......................................................................................................................................................................16
3.2.5.Dimension of the Outlet Pipe on Base and Top Plates.........................................................................................17
3.3.XDH Installation........................................................................................................................................................................................................ 19
3.3.1.Leveling the Cabinet................................................................................................................................................................................19
3.3.2.Removing Leveling Feet and Fastening.............................................................................................................................20
3.3.3.Assembly of Cabinet Parts...............................................................................................................................................................21
3.4.Unit Piping Installation.......................................................................................................................................................................................22
3.4.1.Removing Filter Net.................................................................................................................................................................................22
3.4.2.Specications of the Internal Piping of the End.........................................................................................................22
3.4.3.Brass Connection Between XDP and XDH Units......................................................................................................24
3.4.4.Connecting the Condensate Water Outlet Pipe of the XDH Unit.............................................................25
3.5.Post-Installation Arrangements ................................................................................................................................................................27
3.5.1.Adjusting Air Bales................................................................................................................................................................................ 27
3.5.2.Blocking Holes on Top Plate of XDH Unit........................................................................................................................28
3.5.3.Leakage Detecting by Nitrogen.................................................................................................................................................29
3.6.Installation Checklist........................................................................................................................................................................................... 29

Vertiv | Liebert XDH | User Manual iii
Chapter 4: Electrical Installation.................................................................................................................................................................30
4.1.Task Introduction and Notes........................................................................................................................................................................30
4.1.1.Cables to Connect On-site ................................................................................................................................................................30
4.1.2.Installation Notes.......................................................................................................................................................................................30
4.2.XDH Cable Connection .....................................................................................................................................................................................31
4.2.1.Positions of Electrical Interfaces of the XDH Unit .....................................................................................................31
4.2.2.Connecting the Power Cable of the XDH Unit............................................................................................................ 32
4.2.3.Connecting Control Cables.............................................................................................................................................................32
4.3.Electrical Installation Inspection............................................................................................................................................................. 36
Chapter 5: Startup Commissioning ..........................................................................................................................................................37
5.1.Preparations Before Commissioning.....................................................................................................................................................37
5.2.Commissioning Procedure.............................................................................................................................................................................37
5.2.1.Maintaining the Pressure ................................................................................................................................................................... 37
5.2.2.Evacuating the System.......................................................................................................................................................................38
5.2.3.Refrigerant Charging............................................................................................................................................................................40
5.3.Post Commissioning Inspection ............................................................................................................................................................... 41
Chapter 6: Controller Operation Instructions...............................................................................................................................42
6.1.Feature............................................................................................................................................................................................................................... 42
6.2.Appearance................................................................................................................................................................................................................. 42
6.3.Graphic Color Screen......................................................................................................................................................................................... 43
6.4.Control Buttons........................................................................................................................................................................................................44
6.4.1.Function Description..............................................................................................................................................................................44
6.4.2.Operation Example .................................................................................................................................................................................45
6.5.Control Screen..........................................................................................................................................................................................................46
6.5.1.ON Screen.........................................................................................................................................................................................................46

Vertiv | Liebert XDH | User Manual iv
6.5.2.Normal Screen.............................................................................................................................................................................................46
6.5.3.Unit Working Icons..................................................................................................................................................................................47
6.5.4.Password Screen.......................................................................................................................................................................................47
6.6.Menu Structure........................................................................................................................................................................................................48
6.6.1.Main Menu........................................................................................................................................................................................................48
6.6.2.Alarm Menu....................................................................................................................................................................................................49
6.6.3.Current Alarm...............................................................................................................................................................................................49
6.6.4.Historical Alarm..........................................................................................................................................................................................50
6.6.5.Alarm Setup ...................................................................................................................................................................................................50
6.6.6.System State .................................................................................................................................................................................................54
6.6.7.System Menu.................................................................................................................................................................................................58
6.6.8.Help Menu........................................................................................................................................................................................................61
6.6.9.Display Set........................................................................................................................................................................................................61
Chapter 7: System Operation And Maintenance........................................................................................................................62
7.1.Routine Inspection Items (Monthly) ..................................................................................................................................................... 62
7.2.Routine Inspection Items (Semi-Annual)........................................................................................................................................ 63
7.3.System Diagnosis Testing..............................................................................................................................................................................64
7.4.Electrical Connection Inspection............................................................................................................................................................64
7.4.1.Electrical Maintenance..........................................................................................................................................................................64
7.4.2.Control Part Maintenance.................................................................................................................................................................64
7.5.Filter Maintenance Guidance...................................................................................................................................................................... 65
7.6.Maintenance Guidance for Fan Kit........................................................................................................................................................ 65
7.7.Cooling System Maintenance .....................................................................................................................................................................66
7.8.Condensate Water Drain System Maintenance........................................................................................................................66

Vertiv | Liebert XDH | User Manual v
Chapter 8: Troubleshooting..............................................................................................................................................................................67
8.1.Fan Troubleshooting.............................................................................................................................................................................................67
8.2.Fault Diagnosis and Handling of Electronic Expansion Valve (EEV) ..................................................................67
8.3.Fault Diagnosis and Handling of the Air Conditioning System ................................................................................ 68
Appendix I: Menu Structure of Micro Processor Controller........................................................................................ 69
Appendix II: Alarm Output Menu............................................................................................................................................................... 70
Appendix III: Equipment Maintenance Checklist (Monthly)......................................................................................... 71
Appendix IV: Routine Maintenance Inspection Items
(Semi-Annual) ................................................................................................................................................................................................................. 72
Appendix V: Table Names and Content of Harmful
Substances in Products ........................................................................................................................................................................................ 73

Vertiv | Liebert XDH | User Manual 1
Product Overview
Chapter 1: Product Overview
This chapter introduces the product description, model description, product appearance and main components
of the XDH precision air conditioner. The Liebert®XDH™ high heat density precision air conditioner (hereinafter
referred to as “XDH”) is a specially engineered equipment for the applications which does not permit any
unauthorized and unqualied access in the system. It must be used only by professionally trained personnel if it
is placed in shopping malls, light industry, or any business environment.
1.1.Product Introduction
The XDH precision air conditioner is a precision environment control equipment for small to medium-
sized server rooms, data hall and similar ecosystems that also calls for energy-saving and high heat density
requirements. It is specically designed to ensure that equipment providing precisely controlled output
performance such as sensitive equipments, industrial process equipments, communication equipments and
other types of computing equipments should have a reasonable and safe operating environment.
The XDH features high reliability, high sensible-heat ratio and high airow rate. The XDH operates on R410A/
R134a environment friendly refrigerant that adheres to the international standards. The XDH precision air
conditioner is also equipped with a high-eiciency micro-channel evaporator coil (heat exchanger) which has a
profound design and layout that results in an excellent heat exchanging performance. It is combined with an EC
fan that delivers large airow rate with low energy consumption, which increases the operational eiciency of
the unit drastically. An electronic expansion valve helps to evenly distribute the refrigerant ow in an intelligent
way to accommodate the variations in the cooling load.
XDH architecture is an eective and eicient solution to the problem of heat dissipation in server rooms with
high heat density and it is installed where cooling load changes drastically.

Vertiv | Liebert XDH | User Manual 2
Product Overview
1.2.Model Description
The physical appearance of XDH is shown in Figure 1-1.
Figure 1-1 Appearance of the Liebert XDH Precision Air Conditioner
No. Description No. Description
1 Micro channel evaporator 4 Electronic expansion valve
2 Microprocessor controller 5 Drain pump
3 EC fans
Figure 1-2 Main Components

Vertiv | Liebert XDH | User Manual 3
Product Overview
1.3.Model Nomenclature
The model of the XDH PAC is fully-dened by eleven digits, as represented in Table 1-1.
Table 1-1 Nomenclature of XDH Unit
1 2 3 4 5 6 7 8 9 10 11
XD H 0 3 0 B S 1 L H 0
Digit 1,2 Product Model Digit 8 Refrigerant Type
XD X-treme Heat Density System 1 R410a
HHorizontal Row Cooler 2R134a
Digit 3 Cooling Capacity kW Digit 9 Water Pump
0-9 Nominal Net Cooling Capacity - kW LNon-Water Pump
Digit 4 Cooling Capacity kW 5Water Pump
0-9 Nominal Net Cooling Capacity - kW Digit 10 Supply Air Type
Digit 5 Cooling Capacity kW RGrille
0-9 Nominal Net Cooling Capacity - kW H Non-grille
Digit 6 Module Size Digit 11 Version
B300 mm Base Unit 0 Non-Water Pump and Grille
L600 mm Large Unit 1Water Pump and Grille
Digit 7 Power Supply
S220 V to 240 V/ 1 Ph/ 50 Hz,
220 V to 240 V/ 1 Ph/ 60 Hz
1.4.Components
This section provides an overview of the main components and their features of the XDH unit. Liebert XDH
includes the micro-channel heat exchanger evaporator coil, EC fans, electronic expansion valve, air lter,
refrigerant lter dryer, condensate drain pump, microprocessor controller, and a power module.
1.4.1.Micro-channel Evaporator
It provides higher heat transfer eiciency for high heat density applications. The heat exchanger design
facilitates hassle-free access to the coil, large surface area for eicient heat absorption, low air pressure
dierence across the coil even at higher airow rates, and it is also light and compact for easy removal, and
repair/ replacement.
1.4.2.EC Fan
EC fans are designed to deliver large airow rates, higher static pressures, and much lower power consumption.
The capacity output of the system can be adjusted according to the cooling demand by modulating the fan
rotational speed.

Vertiv | Liebert XDH | User Manual 4
Product Overview
1.4.3.Electronic Expansion Valve (EEV)
The unit is incorporated with an electronic expansion valve that simultaneously collects temperature and
pressure signals to accurately regulate the refrigerant ow. The EEV can ensure that refrigerant ow is evenly
distributed throughout the system. The EEV’s wide operating envelope reduces the condensing pressure,
thereby resulting in signicant energy savings.
1.4.4.Air Filter
Air lter acts as a protective barrier within the cooling space for solid contaminants such as dust and dirt.
XDH is equipped with a specically designed air lter with a high ltration eiciency capable of ltering the air
impurities and dust.
1.4.5.Filter Dryer
A lter dryer is installed in the refrigerant line to eectively extract any water/ moisture and impurities present
in the system while the unit is operational for a long term. It prolongs the operational life and also ensures the
normal operation of the system.
1.4.6.Drainage Pump
The XDH unit is equipped with a drainage pump that uses a brushless DC pump with a power module. The
rated voltage is 220 V ac. The operational logic of the pump is designed to support idling and overload
protection which ensures timely discharge of condensate water quickly.
1.4.7.Microprocessor Controller
The XDH precision air conditioner is equipped with a Vertiv microprocessor controller that functions on the
advanced PID regulation technology. Microprocessor controller has a display resolution of 240×128 pixels (small
display: 128×64, large display: 240×128) with a blue back-light (small display: white color back-light, large display:
blue color back-light) color screen. The user interface is simple and integrated with a multi-level password
protection which can eectively prevent unauthorized operation. The controller features protective functions
of self-recovery upon power failure, high-voltage & low-voltage protection. The operation times of main
components are available through the menu.
The fault diagnostic system at the expert level can automatically display current fault information, facilitates
easy maintenance and can store up to 400 records of history events. The controller is congured with the
RS485 port and standard communication protocol of Ministry of Information Enterprise (Industrial Standard
MODBUS Protocol).
1.4.8.Power Module
The XDH unit is equipped with a highly eicient power module with minimum electrical losses. The unit
has built-in two power modules as a back up to each other to ensure seamless operation, thereby providing
reliability and stability to the system.

Vertiv | Liebert XDH | User Manual 5
Pre-Installation
Chapter 2: Pre-Installation
XDH precision air conditioner is a distinctly engineered equipment which requires preliminary preparation
before installation. This chapter provides the pre-installation details, including how to prepare the installation
environment, space and reserve the maintenance area. It also gives the air conditioner operational and storage
environment requirements, followed with the procedure to unpack the unit and placement strategies.
• Strict adherence to the installation procedure is mandatory to ensure that the air conditioner unit is
installed properly.
2.1.Equipment Room Requirements
• Before installation, the equipment room must be prepared to ensure a smooth operating ow and to achieve
the expected results. The data center must meet the standards, to obtain proper heating and ventilation.
The design specications for the air conditioners must be ideal and should be in-line with the energy-
eicient design standards.
• To ensure the normal operation of environment control system, the room should be moisture-proof and the
equipment room should have a sealed damp-proof layer. Polyethylene lm should be used for the damp-
proof layer of the ceiling and walls. Alternatively, the same eect similar to polyethylene can be simulated
with moisture-proof paint. It is important to ensure that the coating on the concrete wall and oor is damp-
proof.
• The equipment room should be free of air leakage, reduced to a minimum because outdoor air can increase
the system load and de-stabilize the temperature gradient. It is recommended that the leakage rate of
outdoor air should be kept below 5% of the total indoor airow.
• To avoid any outside air inltration into the room, all the doors and windows should be properly closed.
• Avoid locating the indoor unit in concave or narrow areas which can aect the airow. It is prohibited to
use the XDH precision air conditioner in an unconducive outdoor environment.
• Vertiv recommends that the site preparation is dened as per the requirements. However, if these
requirements are not met, Vertiv recommends that rectications should be made on the site in order to
comply with the specied requirements and conditions.
• However, if the rectications or modications are not implemented, then Vertiv does not guarantee the
accuracy and precision of the temperature and humidity provided by the unit.

Vertiv | Liebert XDH | User Manual 6
Pre-Installation
2.2.Installation Space Requirements
The XDH precision unit is a set of high heat density air conditioning units. It is recommended to install the XDH
unit with a row of high heat density server cabinets in an alternative manner, to form a hot aisle and cold aisle
conguration, as shown in Figure 2-1
2.2.1.Maintenance Space Requirements for XDH
When the XDH air conditioning unit is installed in the server room as shown in Figure 2-1, a provision space of
600 mm in the front and rear sides should be reserved for maintenance activities. Refer Figure 2-2 for better
understanding.
Figure 2-1 XDH Installation Location in Server Room

Vertiv | Liebert XDH | User Manual 7
Pre-Installation
Figure 2-2 Space Clearance for Maintenance for XDH Unit
Table 2-1 describes the requirements for minimum maintenance space.
Table 2-1 Minimum Maintenance Space (unit: mm)
Space locations XDH030BS1LH0 XDH030BS15R1
Front 600 600
Rear 600 600
• The space is used to facilitate regular maintenance activities, such as replacing the lter net, fan, lter dryer and
maintenance of electronic control box.
• Consult Vertiv local representative for any special application.

Vertiv | Liebert XDH | User Manual 8
Pre-Installation
2.3.Storage & Operating Environmental Requirements
2.3.1.Operating Environment
The operation environment of XDH precision air conditioner meets the requirements of GB4798.3-2007. See
Table 2-2 for details.
Table 2-2 Operating Environment Requirements
Items Requirements
Ambient temperature Indoor temperature: 18 °C to 40 °C, RH<60%
Protection level (cooling unit) IP20
Altitude <1000 m, Derating is required when located altitude is above 1000 m
Operation voltage range 220 V±10%, 1 Ph, 50 Hz/ 60 Hz
Contamination level Level II
2.3.2.Storage Environment
The storage environment of XDH precision air conditioner meets the requirements of GB4798.1-2005. See
Table 2-3 for details.
Table 2-3 Storage Environment Requirements
Items Requirements
Storage Environment Clean room (no dust)
Environment humidity Less than 95% RH
Ambient temperature -25 °C to +55 °C
Storage time Total transportation and storage time should not exceed six months,
otherwise the performance of the system needs to be re-calibrated.
Please contact Vertiv local representative when operating in the following conditions
• The voltage of the air conditioning unit is beyond the range of the operating voltage.
• The altitude is higher than 1000 m.
• If the application condition is other than Table 2-2.

Vertiv | Liebert XDH | User Manual 9
Pre-Installation
2.4.Refrigerant Requirements
Refer Section 5.2.3 for details of refrigerant charging
• Do not use sub-standard quality inferior refrigerant as it may cause an extensive damage to the system.
Vertiv does not undertake any responsibility for all the related consequences that result from using a low
quality inferior refrigerant.
2.5.Transportation, Unpacking and Inspection
2.5.1.Transportation and Movement
Railroad and shipping are the preferable transport options for the CRAC. If transport by rail or ship is
unavailable, transport by road is recommended. When selecting road transport, roads without too many bumps
are highly recommended.
• Liebert XDH unit is heavy, it is recommended to use the mechanical equipment like electrical forklift to move
the unit.
• Move the equipment to the location near the installation site.
• If an electric forklift is used, insert the tines of the forklift below the pallet as displayed in Figure 2-5.
• Figure 2-5 shows how the forklift tines are inserted underneath the pallet and shows in the same picture the
illustration to the right that the lines should be aligned with the center of gravity to prevent the equipment
from falling over.
Figure 2-3 Forklift Removal

Vertiv | Liebert XDH | User Manual 10
Pre-Installation
While moving the indoor unit, keep the obliquity within the range of 75° to 105°, as shown in Figure 2-6.
Figure 2-4 The Obliquity of Indoor Unit
2.5.2.Unpacking
Move the equipment to the location near the nal installation site and unpack it. Follow the procedures below
for unpacking.
• Removal of Paper Packaging
Remove the packaging tape and carton at rst, then remove the top cover followed by dismantling
the unit wrapped in the sealing plastic, nally, remove the Honey Comb Paper Board. For better
understanding see Figure 2-7.
No. Description No. Description
1 Top cover 3 Honeycomb cardboard
2 Remove the top cover 4 First remove the winding stretch lm and then remove the
honeycomb cardboard
Figure 2-5 Removing External Package