Mitsubishi Electric MEGR User manual

UM_FAN
TRANSLATION OF THE ORIGINAL INSTRUCTIONS
MEHITS S.p.A.
English
Air conditioners for IT Cooling
MEGR
INSTALLATION, USE AND MAINTENANCE MANUAL
Italian is the original language.
The other languages versions are translation of the original.
To ensure safe and correct use, carefully read this manual and make sure to understand all the contained indications
and information.
English
Engsh

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Installation, use and maintenance manual
Keep this manual in a known and easily accessible place to refer to as
necessary during the entire life-span of the unit.
This Manual has been prepared by MEHITS S.p.A.: Reproduction, even partial, of this booklet is
prohibited.
The original copy is kept on file by MEHITS S.p.A.
Any use of the manual other than for personal reference requires the prior authorisation of MEHITS
S.p.A.
In the interest of improving the quality of its products, MEHITS S.p.A. reserves the right to modify,
without notice, the data and content of this Manual.
The information in this document may be modified without prior notice.
The reproduction and/or dissemination of this document, even in part, is prohibited without the written consent
of MEHITS S.p.A.
Before carrying out any operation on the machine, you must
carefully read this manual and make sure you understand all
the instructions and information given.

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Installation, use and maintenance manual
CONTENTS
1GENERAL PROVISIONS.......................................................................... 5
1.1 GENERAL INFORMATION AND SAFETY...............................................................................................................................5
1.1.1 Scope of the manual...................................................................................................................................................5
2SYMBOLS ................................................................................................ 6
3GLOSSARY AND TERMINOLOGY.......................................................... 7
3.1ATTACHED DOCUMENTATION ..........................................................................................................................................8
3.1.1 General safety rules....................................................................................................................................................8
3.1.2 Precautions against residual risks...............................................................................................................................9
3.1.3 List of machine internal symbols...............................................................................................................................11
3.1.4 Procedure for requesting support..............................................................................................................................11
3.2 MACHINE IDENTIFICATION .............................................................................................................................................12
3.2.1 Designation...............................................................................................................................................................12
3.2.2 Identification plate.....................................................................................................................................................12
3.3 STORAGE TEMPERATURE.............................................................................................................................................. 13
3.4 OPERATING LIMITS.......................................................................................................................................................13
3.5 DESCRIPTION OF THE MAIN COMPONENTS....................................................................................................................... 14
3.5.1 Electrical panel..........................................................................................................................................................15
3.5.2 Cooling circuit ...........................................................................................................................................................15
3.5.3 Ventilating section.....................................................................................................................................................15
3.5.4 Structure ...................................................................................................................................................................15
4TRANSPORT, STORAGE AND INSTALLATION................................... 16
4.1 TRANSPORT AND MOVING ............................................................................................................................................. 16
4.1.1 Storage .....................................................................................................................................................................16
4.1.2 Transport ..................................................................................................................................................................16
4.1.3 Discharge..................................................................................................................................................................17
4.1.4 Receipt and inspection..............................................................................................................................................17
4.1.5 Handling.................................................................................................................................................................... 17
4.2 DISASSEMBLY OF THE MACHINE PANELS ........................................................................................................................ 18
4.3 INSTALLATION ............................................................................................................................................................. 19
4.3.1 Installation of the standard machine .........................................................................................................................19
4.3.2 Machine positioning..................................................................................................................................................20
4.3.3 Fixing the machines to the ground............................................................................................................................21
4.3.4 Installation clearances ..............................................................................................................................................22
4.3.5 Installation and position of any obstacles..................................................................................................................23
4.3.6 Installation in places with heavy snowfall..................................................................................................................24
4.3.7 Installation in places with strong winds for AC fans ..................................................................................................24
4.4 CONNECTION OF THE COOLING CIRCUIT TO THE INTERNAL MACHINE .................................................................................. 24
4.4.1 Type of copper to be used for the cooling line ..........................................................................................................24
4.4.2 General information for the completion of the cooling line ........................................................................................24
4.4.3 Speed of the coolant in the pipes..............................................................................................................................25
4.4.4 Thickness of the pipes.............................................................................................................................................. 25
4.4.5 Pipe identification......................................................................................................................................................25
4.4.6 Diameters of the machine cooling connections.........................................................................................................26
4.4.7 Installation diagram...................................................................................................................................................27
4.4.8 Connection of the cooling pipes to the machine........................................................................................................28
4.4.9 Coolant charge..........................................................................................................................................................29
4.5 ELECTRICAL CONNECTIONS .......................................................................................................................................... 30
4.5.1 Electrical data ...........................................................................................................................................................30
4.5.2 Electric power supply connection..............................................................................................................................30
4.5.3 Electrical panel..........................................................................................................................................................31
4.5.4 Auxiliary electrical connections with the internal unit ................................................................................................31
4.6 OPTIONAL INSTALLATION.............................................................................................................................................. 32
4.6.1 Vertical air flow..........................................................................................................................................................32
4.6.2 Lifting and rotation hooks for MEGR-MC..................................................................................................................34
4.6.3 Lifting and rotation hooks for MEGR-TF ...................................................................................................................38
4.6.4 Earthquake anchoring kit only for MEGR-MC...........................................................................................................40
4.6.5 Cooling/electrical connections in seismic areas........................................................................................................40
5PRE-COMMISSIONING.......................................................................... 40

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Installation, use and maintenance manual
5.1 BEFORE STARTING THE UNIT ......................................................................................................................................... 40
6START.................................................................................................... 41
6.1 MACHINE START-UP .....................................................................................................................................................41
7METHOD OF USE .................................................................................. 41
7.1 PROVISIONS AND WARNINGS FOR USE............................................................................................................................41
7.2 EMERGENCY STOP ....................................................................................................................................................... 41
7.3 PROLONGED SHUTDOWNS OF THE MACHINE....................................................................................................................41
7.4 START-UP AFTER EXTENDED MACHINE INACTIVITY ...........................................................................................................42
8FIRST DIAGNOSTICS............................................................................ 42
8.1 TROUBLESHOOTING ….................................................................................................................................................42
9MAINTENANCE...................................................................................... 43
9.1 MAINTENANCE INSTRUCTIONS .......................................................................................................................................43
9.2 SCHEDULED MAINTENANCE........................................................................................................................................... 43
9.3TABLE OF GENERAL MAINTENANCE JOBS ....................................................................................................................... 44
9.4 CHECK THAT THE COILS ARE CLEAN............................................................................................................................... 44
9.4.1 Cu-AL “tube and fin” coils .........................................................................................................................................45
9.4.2 Treated Cu-Al "tube and fin" coils.............................................................................................................................45
9.4.3 Microchannel coils ....................................................................................................................................................46
9.4.4 MICROCHANNEL coils with E-COATING treatment ................................................................................................46
9.5 EXTRAORDINARY MAINTENANCE.................................................................................................................................... 47
10 DISPOSAL OF THE MACHINE .............................................................. 48

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Installation, use and maintenance manual
1 GENERAL PROVISIONS
1.1 General information and safety
1.1.1 Scope of the manual
This manual, which is an integral part of the machine (*), was prepared by the Manufacturer to provide the necessary information to
all those who are authorised tointeract with it during its life span: Buyers, System Designers, Carriers, Handling Operators, Installers,
Expert Operators, Specialist Technicians and Users.
(*) in the interest of clarity, this term is used as defined in the Machinery Directive.
As well as adopting a code of good practice, the recipients of the manual must read the information with care and apply it scrupulously.
Taking a little time to read this information can help avoid risks to the health and safety of persons as well as prevent financial losses.
The information was written by the Manufacturer in the manufacturer's native language (Italian) and is referred to as the "ORIGINAL
INSTRUCTIONS". The information is valid even if the machine in your possession is not exactly the same as the one referred to.
Keep this manual in a known and easily accessible place to refer to as necessary.
The Manufacturer reserves the right to modify the product without prior notice.
A number of symbols are used to highlight some parts of the text that are of particular importance. These are described below.
(1) in the interest of clarity, this term is used as defined in the Machinery Directive.

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Installation, use and maintenance manual
2 SYMBOLS
DANGER:
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING:
Warning indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
ATTENTION:
Attention indicates a potentially hazardous situation which, if not avoided, could cause minor or
moderate damage.
PROHIBITION:
Prohibition to perform certain movements or activities.
OBLIGATION:
This indicates mandatory actions and behaviours to ensure product reliability and safety.
INFORMATION:
Indicates technical information of particular importance which should not be neglected.
NOTICE:
This is used to address practices not connected with possible physical injury.

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Installation, use and maintenance manual
3 GLOSSARY AND TERMINOLOGY
There are some recurring terms in the manual which are described below in more detail.
Manufacturer: this is the company that has designed and built the machine in line with current laws, implementing all the good
construction rules, and paying attention to the health and safety of people interacting with the machine.
Buyer: the person responsible for making the purchase who must supervise the organisation and assignment of duties to ensure that
everything is done in compliance with the applicable laws.
Owner: Legal representative of the company, a body, or a natural person who owns the plant where the machine is installed and is
responsible for checking compliance with all the safety rules in this manual and the national regulations in force.
Designer: a competent specialist person duly appointed and authorised to draw up a project that takes into account all the legislative
and regulatory aspects and code of good practice that apply to the system as a whole. In any case, as well as comply with the
instructions provided by the machine Manufacturer, the designer must consider all the safety aspects for all those persons who will
have to interact with the system during its expected life span.
Installer: specialist competent person duly appointed and authorised to set up the machine or system according to the project
specifications and the recommendations of the machine Manufacturer and in compliance with the laws on safety at work.
User: person authorised to manage use of the machine in compliance with the "instructions for use" and the laws in force concerning
safety at work.
Carriers: the persons who take the machine to the destination in a suitable means of transport. They must stow and position the
machine in a suitable way to ensure that it cannot move suddenly during transfer. When using devices for loading and unloading,
they must observe the instructions that can be found on the machine to ensure their own safety and that of those people with whom
they interact in the process.
Handling operators: those who duly set up the machine and implement all the applicable measures so that it can be handled in a
safe and correct manner. They are also those persons who, upon receipt of the machine, move it to the place of installation according
to the instructions which can be found on the machine. All the above employees must have adequate skills and observe the
instructions to ensure their own safety and that of those people with whom they interact in the process.
Maintenance person: the person authorised by the owner to carry out on the machine all the adjustment and check activities
expressly indicated in this manual, and which must be strictly followed. His/her work will only be limited to what is clearly allowed.
Expert operator: person appointed andauthorised by the User or the Buyer to use the machine andcarry out the routine maintenance
according to the instructions provided by the Manufacturer. In the event of failures not considered in this manual, the expert operator
must request the assistance of a specialist technician.
Specialist technician: the person authorised directly by MEHITS to carry out all operations of ordinary and extraordinary
maintenance. He/she will also carry out all regulations, checks, repairs and replacement of parts that should become necessary
during the life of the unit itself. Outside Italy and those countries where the Manufacturer is not directly present, the Agent is personally
responsible for acquiring a suitable number of Technicians, proportional to the area and the business.
Routine maintenance: all the operations that help to ensure the good performance and efficiency of the machine. These operations
are planned by the Manufacturer who defines the skills required and the procedures to be implemented.
Extraordinary maintenance: all the operations that help to ensure the good performance and efficiency of the machine. These
operations, which are not foreseeable, are not planned by the Manufacturer and must only be carried out by the specialist technician.

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Installation, use and maintenance manual
3.1 Attached documentation
The following documents are delivered with the unit:
•Installation, use and maintenance manual: it contains the list of operations to carry out.
•Wiring diagram: it is specific to the machine in question. It is useful for the persons who will have to carry out work on the
electrical system, as it shows the various components and connections.
•Dimensional and lifting drawings.
•Instructions for the installation of accessories: describes the procedures for their installation on the machine.
•EC declaration of conformity: indicates that the machines comply with current European directives.
The instructions are also available in an alternative format on the website https://www.melcohit.com/EN/download/
3.1.1 General safety rules
The manufacturer, during design and construction, has paid particular attention to aspects that may pose a risk to the safety and
health of people interacting with the machine. The manufacturer has complied with the applicable laws as well as the code of good
manufacturing practice. The purpose of this manual is to encourage users to take all due care and thereby avoid any risks. In any
case, prudence is required at all times. Safety is also the responsibility of all operators who interact with the machine.
Carefully read the instructions in this manual and those applied directly on the machine, and respect those concerning safety in
particular.
An overall project that envisages implementation of this machine in a system must take into account the code of good practice as
well as the legislative and regulatory aspects. Particular attention must be paid to all the recommendations and technological
information provided by the manufacturer. Do not tamper with, avoid, remove or bypass the safety devices installed on the machine.
Failure to observe this requirement could result in serious risks to the health and safety of the persons involved.
The personnel who carry out any kind of work during the entire life span of the machine must have precise technical knowledge,
special skills and recognised experience in the specific sector. The personnel must also possess and use/wear all the personal
protective equipment (PPE) required by law. Non-fulfilment of these requirements could endanger people's health and safety.
Keep the area around the machine in a good state in order to avoid risks to the health and safety of persons during normal use and
maintenance of the machine.
Some processes may require the assistance of one or more helpers. In which case, these helpers must be duly trained and informed
of the type of work to be carried out in order to avoid risks to their health and safety.
Move the machine observing the information shown on the packaging and the instructions on use provided by the manufacturer.
When handling, if the circumstances demand it, request the assistance of one or more helpers who can give directions.
The personnel who carry out loading, unloading and handling of the equipment must have recognised skills and experience in the
specific sector and must have absolute command of the lifting equipment to be used.
During installation, observe the clearances indicated by the manufacturer and take into account all the work activities carried out in
the vicinity. Installation must also be carried out in compliance with the laws in force on safety at work.
The machine must be installed and connected in accordance with the manufacturer's instructions. The person in charge must also
take into account all regulatory and legislative requirements, carrying out all installation and connection operations in a workmanlike
manner.
After installation and before commissioning the machine, he must perform a general check to make sure that these requirements
have been met.
Check that any means of transport to be used for transfer of the machine are suitable for the purpose, and that the machine is loaded
and unloaded with care to ensure the safety of the operator and of any other persons who are directly involved. Before transfer, make
sure that the machine and its components are duly anchored to the vehicle and do not exceed the maximum permitted dimensions
for transport on the vehicle. Apply any necessary signs.
The operator must have read and understood the information on use of the machine, and have suitable skills and experience for
carrying out the work in hand.
Put the machine only to the uses foreseen by the manufacturer. Improper use of the machine may pose risks to the health and safety
of the persons and cause financial losses.
The machine has been designed and constructed to meet all the operating conditions indicated by the manufacturer. Tampering with
any of the devices to change the performance can expose the persons to health and safety risks and cause financial losses.

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Installation, use and maintenance manual
Only use the machine with the safety devices properly installed and in perfect working order. Failure to observe this requirement
could result in serious risks to the health and safety of the persons involved.
Keep the machine in perfect working order and perform the routine maintenance recommended by the manufacturer. Good
maintenance can help to ensure the best possible performance, a long useful life and constant compliance with the safety
requirements.
Before maintenance and adjustments, activate all the applicable safety devices and provide the personnel and any other people in
the vicinity with all necessary information. In particular, cordon off the area and prevent access to all the devices that could, if
activated, inadvertently cause danger and pose risks to health and safety.
Maintenance and adjustments must be carried out by authorised persons who must implement all the necessary safety measures
according to the procedures set down by the manufacturer.
All maintenance operations that require specific technical expertise or skills must only be carried out by qualified personnel with
recognised experience in the field.
In the case of maintenance in areas that are awkward or dangerous to access, implement appropriate measures to ensure the safety
of oneself and of other people, in compliance with the laws in force on safety at work.
Replace excessively worn parts. All the above can help to ensure the good working order of the machine and the required level of
safety.
This appliance must not be used by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of
experience and knowledge, unless they are supervised or given instructions.
Children must be supervised to make sure they do not play with the appliance.
3.1.2 Precautions against residual risks
Prevention of residual mechanical risks
•install the machine according to the instructions of this manual;
•regularly carry out all the maintenance operations foreseen in this manual;
•wear protective equipment (gloves, eye protection, hard hat, etc.) suited to the work in hand; do not wear clothes or
accessories that can get caught or sucked in by flows of air, tie back long hair before entering the unit
•before opening the machine panelling make sure that it is firmly hinged or screwed to the machine;
•the fins on heat exchangers and the edges of metal components and panels can cause cuts;
•do not remove the guards from mobile components while the unit is operating;
•make sure that mobile component guards are fitted correctly before restarting the unit;
•fans, motors and belt drives might be running: before accessing these, always wait for them to stop and take appropriate
measures to prevent them from starting up
•the surfaces of the machine and pipes can get very hot or cold and cause the risk of scalding;
•do not use your hands to check possible coolant leaks.
Prevention of residual electrical risks
•disable the unit from the mains using the main switch before opening the electrical panel;
•check that the unit has been grounded correctly before starting it;
•before carrying out maintenance on the fans, wait at least 5 minutes after switching off the unit;
•do not use cables with inadequate sections nor extension cable connections, even for very short periods or emergencies.
WARNING:
During regular maintenance activities or in the event of a fault only use original components.

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Installation, use and maintenance manual
Prevention of environmental risks
•The machine contains substances and components that are dangerous for the environment, such as refrigerant gases and
lubricant.
•The units may only be serviced and disposed of by qualified technicians.
•Refrigerant gas:
The cooling circuit contains fluorinated greenhouse gases covered by the Kyoto Protocol.
The fluorinated greenhouse gases contained in the cooling circuit must not be disposed of in the atmosphere.
Refrigerant gases must be recovered in accordance with current laws.
The units may contain fluorinated greenhouse gases <HFC R410A [GWP100 2088]> or <HFC R32 [GWP100 675]>
•Lubricant oil:
The cooling compressors and the cooling circuit contain lubricant oil.
The oil must be recovered in accordance with current laws.
Do not disperse the oil in the environment.
Prevention of other residual risks
•When using R32 refrigerant, it will be necessary to take into account its LFL (Low Flammable Level), equal to 0.307 kg/m3.
To reduce the risk of flame, avoid areas with a gas concentration greater than 0.077 kg/m3 (25% LFL).
•Like other refrigerants, R32 is heavier than air and therefore tends to accumulate at the base (near the floor). If R32
accumulates around the base, a flammable concentration can be reached. To avoid ignition, a safe working environment
must be maintained by ensuring proper ventilation. If a refrigerant leak is found in a room or area with insufficient ventilation,
avoid using flames until the working environment can be improved by ensuring proper ventilation.
•Do not install in a space where all four sides are closed.
•the machine contains pressurized refrigerant gas. The pressurised equipment must not be touched except during
maintenance, which must be entrusted to qualified and authorised personnel;
•make the connections between the system and the machine following the instructions given in this manual;
•in order to avoid environmental hazards, make sure that any leaking fluid is collected in suitable devices in accordance with
local regulations;
•if a part needs to be dismantled, make sure it is correctly re-assembled before starting the unit;
•when the rules in force require the installation of fire-fighting systems near the machine, check that these are suitable for
extinguishing fires on electrical equipment and on the lubricating oil of the compressor and the coolant, as specified on the
safety data sheets of these fluids (for example, a CO2extinguisher);
•if the machine is equipped with overpressure release devices (safety valves), when these devices are activated, the
refrigerant gas is released at high temperature/speed. Prevent this from causing damage to people or property: channel the
release appropriately, according to the provisions of the EN 378-3 standard and the current local regulations in force, making
sure to discharge to open and safe places any fluids belonging to a safety group other than A1.
•keep all the safety devices in good working order and check them periodically according to the regulations in force;
•keep all lubricants in suitably marked containers
•do not store inflammable liquids near the unit
•only carry out brazing or welding activities on clean and empty pipes, without lubricant oil residues. Do not bring flames or
other sources of heat near pipes containing refrigerating liquid;
•do not use naked flames near the machine;
•the machinery must be installed in structures protected against atmospheric discharge according to the applicable laws and
technical standards
•do not bend or hit pipes containing pressurised fluids

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Installation, use and maintenance manual
•it is not permitted to walk or rest other objects on the machines
•the user is responsible for overall evaluation of the risk of fire in the place of installation (for example, calculation of the fire
load)
•during transport, always secure the unit to the bed of the vehicle to prevent it from moving about and overturning
•the machine must be transported according to the regulations in force taking into account the characteristics of the fluids in
the machine and the description of these on the safety data sheet
•inappropriate transport can cause damage to the machine and even leaking of the cooling fluid. Before the first start up,
check that the cooling circuit is pressurised.
•the accidental release of refrigerant in an enclosed area can cause lack of oxygen, and therefore a risk of asphyxiation.
Install the machine in a suitably ventilated area, in accordance with the EN 378-3 standard and local regulations, and install
refrigerant detectors when required;
•unless arranged otherwise with the Manufacturer, the machine be installed in environments where there is no risk of
explosion (SAFE AREA).
3.1.3 List of machine internal symbols
3.1.4 Procedure for requesting support
For support, please contact one of the authorised centres (Italy) or our branches/distributors (outside Italy). When requesting technical
support concerning the machine, cite the data on the identification plate, and the serial number in particular, and describe the
conditions of access and the area around the machine.
In your request, indicate the approximate hours of use and the fault detected. In case of alarm, indicate the alarm message number.
Internal moving components
Equipment under voltage
Earth connection
Fire risk
(Only present with R32)

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Installation, use and maintenance manual
3.2 Machine identification
3.2.1 Designation
The alphanumerical code of the model of the machine, which is given on the identification plate, represents precise technical
specifications which are indicated in the figure.
Model:
MEGR-MC-SL-A 015
MEGR R410A remote capacitors
MC Coil type
MC = Microchannel exchanger
TF = Cu/Al exchanger
B Acoustic preparation
[ ] = Standard
SL = Low Noise
A Fan electric motor
A = with AC electric motors
E = with EC electric motors
015 Model code corresponding to the rated power (kW)
3.2.2 Identification plate
The type of machine is shown on the label on the machine, normally found in the electrical panel. The label provides the reference
data and all the essential information required to ensure safe operation.

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Installation, use and maintenance manual
3.3 Storage temperature
During transport and if the machine is not installed at the reception, do not remove the packaging and place the machine in an
enclosed, dry and protected from sunlight site at temperatures ranging between -40°C and 60°C in absence of superficial
condensation.
3.4 Operating limits
Please refer to the Data Book for the operating limits of the machines.

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Installation, use and maintenance manual
3.5 Description of the main components
Air-cooled condensers for IT Cooling equipped with axial fans with horizontal or vertical air flow. Air flow from coil to fan.
The design solution allows a high degree of application flexibility. There are 4 series with 12 models each.
Between the internal unit and the condenser, it is necessary to make the cooling and electrical connection of the condensation control
proportional signal and of the alarms.
The machines in this series are designed and built for use in technological air conditioning systems.
The machines are not suitable for ducting the intake and discharge of air.
On request, it is possible to have:
•The support feet kit, to transform the machine into a machine with vertical air flow;
•The shut-off taps kit for the cooling line;
•Protective E-coating treatment for the microchannel coil;
•The Finguard protective treatment for the tube and fin coil;
•The earthquake anchoring kit (only on machine with microchannel coil and single row of fans).
In order to ensure maximum performance and guarantee the safety of people, the product and the environment, before installation it
will be necessary to complete a full design of the system within which the machine will be installed, assessing all the predicted and
foreseeable critical points during its life, from installation to dismantling.
The machines essentially consist of a heat exchange section and one or more fans.
They work by condensing the coolant in the cooling circuit.
The air from the external environment is made to flow through the coil by the fans to allow the condensation of the cooling fluid.
The heat extracted from the coil is released into the ambient air.
The remote condenser is connected to the main machine by cooling pipes.
For further machine characteristics and technical data, please refer to the Data Book.
Front view
Rear view

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Installation, use and maintenance manual
3.5.1 Electrical panel
The power supply is independent of the internal unit.
The electrical panel is installed on the machine and is fitted with a line disconnector.
In accordance with the standard EN 60204-1, the handle of the circuit breaker must be easy to access and at a height of between
0.6 and 1.9 metres above the floor. The position of the machine in the place of installation must be considered, because if the unit is
placed on a raised platform the height of the circuit breaker might no longer be in compliance with the standard. In which case the
installer must arrange for a walkway or a similar solution that can allow operators to access the safety device with ease.
3.5.2 Cooling circuit
The cooling circuit includes a heat exchange coil. This can be an aluminium microchannel type or a Cu/Al tube and fin type.
The condensers are supplied with a charge for tightness testing and they must be filled with the coolant charge.
3.5.3 Ventilating section
The unit is equipped with axial fans and protective grilles on the air supply. Units can have 1, 2, 3 fans, or 4, 6 fans.
Both AC and EC fans are available.
3.5.4 Structure
The all-aluminium structure is particularly suitable for outdoor installation.
The machines are fully assembled in the factory, supplied with control equipment in order to reduce installation time and costs.
INFORMATION:
The machines are supplied with a sealing charge (nitrogen) and must be filled with the correct refrigerant
charge (see the “refrigerant charge” chapter).
Axial Fan
Cooling connections
Condensing coil

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4 TRANSPORT, STORAGE AND INSTALLATION
4.1 Transport and moving
4.1.1 Storage
Place in a protected environment, where there is no wind or condensation. Secure the machine in place so that there is no risk of
overturning.
4.1.2 Transport
For road transport it is advisable to use a low loader truck with tarpaulin or in any case to use a tarpaulin to protect the units against
bad weather. Use straps with a ratchet system to secure the unit for the purpose of transport.
INFORMATION:
To avoid damage to the panels, it is recommended to secure the machine as shown in the figure.
The belts must be tensioned with care.
Make sure that the belts don’t press against the mouthpiece of the fans.
For more information, contact the Shipping Office of the Manufacturer.

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Installation, use and maintenance manual
4.1.3 Discharge
Lift and move the machine as indicated on the packaging and/or directly on the machine.
It is advisable NOT TO REMOVE the shrink wrap protection during the unloading, handling and positioning operations.
4.1.4 Receipt and inspection
Upon receipt, verify the integrity of the machine and check it against the order.
• Check the number of packages against the transport document. If incorrect, notify the carrier and the Manufacturer.
• Perform a visual inspection of the packaging.
4.1.5 Handling
OBLIGATION:
All the unloading, handling and positioning operations must be carried out using appropriate means
and by experience personnel, trained and authorised for such activities.
Keep the machine on the pallet for unloading and handling operations.
INFORMATION:
If any of the packages are damaged or missing, contact the Sales Office of the manufacturer and the
freight forwarder, to agree the next plan of action.
For more information, contact the Shipping Office of the Manufacturer.
If the machine is not installed immediately after receipt, it should be stored in a protected environment
as indicated in the “storage” and “storage temperature” sections.

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Installation, use and maintenance manual
4.2 Disassembly of the machine panels
Machine panels
The side panels can be removed. The panels are screwed onto the machine.
DANGER:
The machine panelling is made of heavy aluminium sheet.
All the assembly and disassembly operations must be carried out using suitable means and by
experienced individuals, trained and authorised for these types of operations.
Panel

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Installation, use and maintenance manual
4.3 Installation
4.3.1 Installation of the standard machine
Before starting the installation of the machine, in addition to defining the technical requirements, the person authorised to perform
the work must, if necessary, implement a "safety plan" to safeguard the safety of the people directly involved, and strictly implement
the safety rules and, in particular, the laws that apply to mobile construction sites.
Before installing the machine, be sure that:
othe area is perfectly flat and can ensure long-term stability;
othe floor of the building on which the machine is to be installed is of adequate capacity;
othe machine is easily accessible to all people who must interact with it during its expected useful life.
oit must be possible to perform all maintenance and replacement operations (routine and extraordinary) easily and
without risks to people and in compliance with the laws in force concerning safety at work.
othe spaces are adequate to ensure appropriate air flow for correct machine operation and ventilation.
othe minimum space requirements for operation and inspection indicated in this manual are ensured.
oair intake and delivery are never hindered or obstructed, even partially.
oif people and vehicles are expected to transit in the vicinity, suitable fencing must be erected, in compliance with
existing regulations and ensuring at least the minimum required clearance around the machine for carrying out any
intervention that may be required on the same.
The machine must be installed indoors, in a non-aggressive atmosphere.
Avoid suspended wall or ceiling installations.
Coolant
R410A
R32
Safety class
A1
A2L
INFORMATION:
For the installation / commissioning / positioning of units containing R32, depending on the amount of
refrigerant, check the regulatory requirements that must be met for the installation site.
OBLIGATION:
All the phases of installation must be covered in the general project.
OBLIGATION:
The unit must be installed according to the requirements of standard EN 378-3 and the local
regulations in force, in particular taking into account the category of occupation of the premises and
the safety class defined by EN 378-1.
INFORMATION:
R32 gas is classified as slightly flammable (A2L). The installer/maintenance technician must ensure,
in accordance with the regulations in force, proper ventilation of the site, in order to prevent the
development of dangerous conditions in the event of a refrigerant leak.

20
Installation, use and maintenance manual
4.3.2 Machine positioning
The machine is placed directly on the ground. Once the machine has been positioned, it must be checked that it is level in the four
positions indicated in the figure.
OBLIGATION:
The machine must be placed in an area only accessible by OPERATORS, MAINTENANCE PEOPLE
and TECHNICIANS; if this is not possible, it must be surrounded by a fence that is at least two metres
from the external surface of the machine (if possible).
The staff of the INSTALLER or any other visitors must always be accompanied by an OPERATOR.
Under no circumstances, must unauthorised personnel be left alone in contact with the machine.
The MAINTENANCE MAN must limit him/herself to the controls of the machine only; the only panel
that can be opened by him/her is the one that accesses the control module - no other must be touched.
The INSTALLER must limit him/herself to connecting the plant to the unit
Access the machine using the relative personal protective equipment and only after having read and
understood the documents and instructions, which must always be kept close at hand.
Spirit level