ISA METRO N VA 93 User manual

1
EN
METRO’
USE AND MAINTENANCE MANUAL
428000375237
PASTRY DISPLAY CABINETS
ISA S.r.l.
Via del Lavoro, 5
06083 Bastia Umbra - Perugia - Italy
Tel. [phone] - Fax [phone]
www.isaitaly.com
METRO’
93 N VA RV VA RV LS
129 N VA RV VA RV LS
LX
ST

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METRO’
USE AND MAINTENANCE MANUAL
428000375237
EN
PASTRY DISPLAY CABINETS
1. NOTES / IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 Manufacturer's contact details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2. SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1 Personnel training. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2 Safety devices applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2.1 Safety devices present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2.2 Fixed protective devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.2.3 Sectioning the electrical power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3 Residual risks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.1 Risk of contact with parts under stress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.2 Fire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.3 Explosive atmosphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3.4 Slipping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3.5 Tripping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3.6 Circuit faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.4 Warning signs (if any) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3. WASTE DISPOSAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4. INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Storage and unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Installation, positioning and ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.3 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5. TECHNICAL SPECIFICATIONS N VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5. TECHNICAL SPECIFICATIONS RV VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5. TECHNICAL SPECIFICATIONS RV LS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5.2 Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5.3 Levelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.4 Load limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.5 Shelves load limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.5 Adjusting shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6. EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
6.2 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7. CONTROL PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
7.2 User Interface XR44CX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.2.1 Functions XR44CX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.3 User Interface EW978 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8. CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.1 Chiller compartment inside cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.2 Accessing and cleaning the condensing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.3 External cleaning operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10. TECHNICAL ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.1 Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.2 List of alarms on the electronic controller (if any) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11. WARRANTY TERMS AND CONDITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

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METRO’
USE AND MAINTENANCE MANUAL
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PASTRY DISPLAY CABINETS
N° ATTACHMENTS
1Wiring diagram 412100394000 29
2Wiring diagram 412100395000 30
3Wiring diagram 412100396000 31
4Wiring diagram 412100401000 32
5Wiring diagram 412100402000 33
6Wiring diagram 412100404000 34
7Wiring diagram 412100405000 35
8Declaration of conformity 36
The manual contains symbols to attract the reader’s attention and highlight particularly
important aspects. The table below illustrates the meaning of the various symbols used.
Read the instructions manual
Danger: Live electrical parts
Use of protective clothing
Requests for maintenance or operations must
be carried out by qualified staff or technical
after-sales centres.
Attention / Danger
Information
Important information
Operations that must be performed by two
persons.
Visual observation
Condensing unit on board
Notes / Important notes
Remote condensing unit

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USE AND MAINTENANCE MANUAL
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1. NOTES / IMPORTANT NOTES
The content of this manual is of technical nature and is owned by ISA. It is forbidden to
reproduce, circulate or modify all or part of its content without written consent. Any
infringement will be legally pursued.
The manual and the conformity certificate are an integral part of the equipment and should
always accompany the product in the event of transferral to a new location or to a new owner.
The user is responsible for the integrity of these documents, for their consultation during the
whole life cycle of the equipment itself. Keep this manual in a safe place. It should be made
available near the equipment for consultation at any time. If lost or destroyed, you can request
a copy of the manual to ISA by specifying the exact model, identification number and year of
manufacturing. The manual reflects the manufacturing technology at the time of supply. The
manufacturer reserves the right to modify its products in any way it deems necessary, with
no obligation to update manuals and machines relating to previous manufacturing batches.
This equipment is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities or by persons lacking the necessary experience and knowledge,
unless they are supervised by a person responsible for their safety who has instructed them
on how to use the cabinet. Children should be supervised to ensure that they do not play
with the equipment. Always refer to this manual before going ahead with any operation.
Before doing any type of work, disconnect the equipment from the power supply. Any work
on electric and electronic parts or cooling system components should only be carried out by
trained personnel in compliance with current laws.
The Manufacturer cannot be held liable for any injury to persons or animals, or damage to the
product itself in the event of:
• Improper use of the equipment or use of the appliance by unqualified or unauthorised
personnel.
• Failure to comply with current legislation.
• Incorrect installation and/or power supply faults.
• Failure to observe the instructions contained in this Manual.
• Failure to follow the maintenance programme.
• Unauthorised modifications.
• Installation of non-original spare parts in the equipment.
• Installation and use of the equipment for purposes other than those for which the
appliance was designed and sold.
• Tampering with or damage to the power supply cable.
Liability for applying the safety instructions contained in this manual is held by the technical
personnel responsible for the intended use of the equipment, who should ensure that
authorised personnel:
• Are qualified to carry out the requested activity.
• Are aware of, and carefully comply with, the instructions contained in this document.
• Are aware of, and apply, the general safety standards applicable to the equipment.
Failure to comply with safety standards may result in injury to personnel and damage to the
equipment components and control unit. The user can contact the dealer to request additional
information not contained in this document, or suggest improvements, at any time.
Before the product is delivered to the customer, it is essential that a trained technical
member of staff checks that the equipment is operating correctly in order to achieve
maximum performance.

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USE AND MAINTENANCE MANUAL
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PASTRY DISPLAY CABINETS
1.1 Introduction
ISA employs materials of the best quality and as they enter the company, we constantly
monitor their storage and the use as part of the manufacturing process to prevent damage,
deterioration and failure. All manufacturing elements are designed and manufactured in order
to guarantee reliability and high safety standards. All equipment is subjected to a strict testing
procedure before delivery. However, please bear in mind that product performance over time
depends on correct use and adequate maintenance. This manual contains the necessary
instructions to maintain the equipment's initial appearance and functions over time.
Note
So as not to compromise equipment operation and safety, particularly complex installation and
maintenance operations are not described in this manual and are carried out by the manufacturer's
specialised technical personnel.
The Use and Maintenance Manual contains the necessary information for understanding
how the equipment works and how to use it properly, namely: the technical description
of the various operational units, equipment and safety systems, operations, how to use
the instruments and the interpretation of any diagnostics reports, main procedures and
information relating to routine maintenance. For correct use of the equipment, the working
environment should comply with current health and safety standards.
The safety requirements, indications, standards and notes illustrated in the various chapters
of this manual are aimed at establishing a code of conduct and a series of obligations to
be observed when performing the various activities, in order to create safe conditions for
personnel, the equipment and the surrounding environment. The safety standards reported
in this document are intended for trained, authorised personnel responsible for:
• Transport
• Installation
• Operation
• Management
• Maintenance
• Cleaning, decommissioning and disposal which are the only intended uses of this
equipment
Attention
Reading this manual, albeit in full, is no substitute for adequate user experience. therefore it should
only be considered a useful reminder of the technical features and the main operations to perform.
Warning
Installers and users are obliged to read and understand all the instructions contained in this document
before using the equipment.
1.2 Manufacturer's contact details
ISA S.r.l.
Via del Lavoro, 5
06083 - Bastia Umbra - Perugia - Italy
Tel. [phone]
Fax [phone]
www.isaitaly.com

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2. SAFETY
The buyer is responsible for training personnel using the appliance on the risks, safety devices
and general health and safety rules required by the laws of the country where the equipment is
installed.
Users/operators should be aware of the position of all the controls and how they work, as well as
of the features of the equipment.
They should also read this manual in its entirely.
Maintenance work should be conducted by qualified personnel after the equipment has been
prepared adequately.
Danger
Tampering with or unauthorised replacement of one or more parts of the equipment, applying ac-
cessories that modify its use and fitting spare parts other than recommended ones may result in
accident risks.
Danger
Before doing any type of work, the equipment must always be disconnected from the power supply.
Any work on electric parts or cooling system components should only be carried out by
trained personnel in compliance with current laws.
2.1 Personnel training
The buyer is responsible for ensuring personnel who will use the equipment and
maintenance technical staff are instructed and trained adequately.
The manufacturer is available for advice, clarifications, etc. so that the operator and
technical staff can use the equipment correctly.
Attention
The equipment is intended for professional use.
2.2 Safety devices applied
The Equipment is equipped with the following safety devices:
2.2.1 SAFETY DEVICES PRESENT
2.2.2 FIXED PROTECTIVE DEVICES
2.2.3 SECTIONING THE ELECTRICITY SUPPLY
2.2.1 Safety devices present
Devices which operation prevents risk situations in operation conditions verifying (e.g.
fuses, pressure switches, protective devices, circuit breakers, etc.).
2.2.2 Fixed protective devices
Fixed protective devices consist of fixed perimeter shields, which are used to prevent
external parts from entering the equipment.
Danger
It is strictly forbidden to start up the equipment after maintenance work without refitting the panelling
properly.
Attention
You should check the integrity of fixed panels and corresponding fixings to the frame, focusing in
particular on the protective panels.

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2.2.3 Sectioning the electricity supply
Before conducting any maintenance work on the equipment or part of it, it is necessary to
section the power supply that powers it.
Danger
Please remember to fully disconnect the equipment from the power supply in the event of maintenance
work during which the operator cannot prevent any accidental closure of the circuit by other people.
2.3 Residual risks
During design the manufacturer examined all the areas or parts at risk. Therefore, all
necessary precautions have been taken to prevent risks to persons and damage
to the equipment as mentioned earlier.
Attention
Periodically check that all safety devices are operating correctly.
Do not remove the fixed protective devices.
Do not introduce foreign objects or tools into the operational and working area.
Although the equipment is fitted with the aforementioned safety devices, there are still
some risks that cannot be eliminated, but reduced via corrective actions by the final
integrator and correct operational procedures.
Below is a summary of the remaining risks associated with the equipment during:
• Normal operation
• Adjustments and tweaking
• Maintenance
• Cleaning
2.3.1 Risk of contact with live parts
Risk of breaking or damaging the electrical components of the equipment, with a possible
reduction in safety levels, following a short circuit.
Before connecting the electricity supply, make sure there is no ongoing maintenance work.
Attention
Before making the connection, check that the d/c electricity at the point of installation is no higher than
the value indicated on the protective switches on the fuse box. if it is, the user is responsible for fitting
the relevant limiting devices.
It is strictly forbidden to conduct any electrical modification, in order to prevent additional unforeseen
hazards and risks.
2.3.2 Fire
Danger
In the event of a fire, immediately disconnect the master switch from the main power supply line.

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2.3.3 Explosive atmosphere
The equipment must not be located in an area classified as an explosion risk according to
1999/92/EC such as:
Zone 0
An area in which there is a permanent, long-lasting or frequently explosive atmosphere
made up of a mixture of air and flammable substances in the form of gases, fumes or
steam.
Zone 1
An area in which the formation of an explosive atmosphere, made up of a mixture of air and
flammable substances in the form of gases, fumes or steam is occasionally probable during
normal activities.
Zone 20
An area in which there is a permanent, long-lasting or frequently explosive atmosphere in
the form of clouds of combustible dust in the air.
Zone 21
An area in which the formation of an explosive atmosphere in the form of clouds of
combustible dust is occasionally probable during normal activities.
2.3.4 Slipping
Any leaks in the areas surrounding the equipment may cause personnel to slip.
Check that there are no leaks and keep these areas clean at all times.
2.3.5 Tripping
Generally untidy deposits of material may constitute a tripping hazard and a total or partial
obstruction of emergency exit routes.
You should ensure that operating and transit areas and emergency exit routes are free from
obstacles in compliance with current legislation.
2.3.6 Circuit faults
Owing to potential faults, safety circuits may become less effective, which results in lower
safety levels.
You should check the operational condition of the present safety devices regularly.
2.4 Warning signs (if any)
Owing to the presence of various residual risks identified, the equipment is fitted with
hazard, warning and obligation signs devised in compliance with regulations relating to
graphical symbols for use on systems.
The signs are located in clearly visible positions.
Attention
It is strictly forbidden to remove the warning signs on the equipment.
The user is responsible for replacing warning signs that, owing to wear, become unreadable.

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3. WASTE DISPOSAL
During normal operation, the equipment does not generate any environmental
contamination. At the end of its life cycle, or if it is necessary to proceed to permanent
decommissioning, we recommend following the procedures below:
DISPOSAL (User)
The symbol, applied to either the product or its packaging, indicates that the product should
not be considered as normal domestic waste, but should be taken to a waste collection point
for the recycling of electrical and electronic appliances. The correct disposal of this product
helps to prevent potential negative consequences that might derive from inadequate product
disposal. For detailed information about recycling this product, contact your council, your local
waste collection service or the store where you purchased the product.
END-OF-LIFE DISPOSAL AND RECYCLING PROCEDURES
FOR THE EQUIPMENT (Authorised Bodies)
1. Switch off the equipment and unplug the power supply cable.
2. Remove the lamps (if installed). These should be disposed of separately.
3. Remove the control boards and the electronic cards. These should be disposed of
separately.
4. Remove all the independent parts (grids, casings, profiles, etc.) and group them
according to shared features in order to access the heat exchangers, pipes, cables, etc.
and be careful not to damage the cooling circuit.
5. Remove all mobile parts (doors, sliding doors, glass parts, etc.) and group the various
materials according to their features.
6. Check the type of coolant on the label located inside the counter. Remove the coolant
and dispose of it through authorised services.
7. Disconnect the evaporator, condenser, compressor, pipes and fans. These are made of
copper, aluminium, steel and plastic and should therefore disposed of separately.
8. Once all the guardings and the various parts of the frame have been removed, separate
the various types of material they are made from (plastic, metal sheets, polyurethane,
copper, etc.) into groups according to their features.
All recyclable materials and waste should be processed and recycled by professionals, in
compliance with the laws of the country in question.
The company responsible for recycling the materials should be registered and certified as a
waste disposal service in accordance with the specific directives of the country in question.
Attention
Illegal disposal of the product by the owner will result in administrative sanctions as required by cur-
rent laws.
Disposal of the product should comply with current laws on the disposal of coolant liquids and mineral
oils.
Important
If there is no symbol representing a barred dustbin on the equipment, this means that the manu-
facturer is not responsible for taking care of the disposal of the product. In this case, again, current
waste disposal laws should be complied with.
Additional information
Further information on the disposal of liquid coolant, oils and other substances is available on the safety
data sheet corresponding to the substance itself.

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4. INSTALLATION
This manual provides information on how to unpack,
position and connect to the power supply.
4.1 Storage and unpacking
The equipment, with or without the packaging, should be carefully stored inside warehouses
or in areas away from the elements and direct sunlight, at a temperature between 0and
+40°C.
The equipment should only be moved by qualified personnel operating forklift trucks, the
power of which should be suited to handling the weight of the product: during this operation
the equipment MUST be placed on the special pallet supplied.
Unpack the equipment by removing the screws fixing it to the pallet.
All packaging materials are recyclable and should be disposed of in accordance with local
regulations. Please destroy "plastic" bags to prevent them from becoming hazardous to
children (suffocation).
4.2 Installation, positioning and ambient conditions
Attention
There should be a good air flow around the compressor and condensing unit. Therefore the area
around the unit should not be obstructed by boxes or other objects.
Position the equipment away from sources of heat (radiators, all types of ovens, etc.), and away from
draughts (generated for example by fans, air conditioning ducts, etc.).
Also avoid direct exposure to sunlight, or anything that causes the temperature inside the cabinet to
rise with detrimental results to unit operation and energy consumption. Do not use the equipment
outdoors and do not leave it exposed to rain.
4.3 Electrical connection
Attention
Check that the voltage indicated on the appliance is the same as the value on the appliance
identification label and in the table provided in paragraph 2 of this manual, and check that the
required voltage is suitable.
Check on the socket that the power supply voltage provides rated voltage (±10%) when the
compressor is started.
The plug should be directly connected to the electrical socket. It is forbidden to connect the plug to
the socket by means of multiple socket extensions or adaptors.
The electrical system socket must be fitted with a disconnecting device from the mains (rated for the
load and conform to current standards) to guarantee full disconnection in overloads category III (3)
and ensure protection of the circuits from earth faults, overloads and short circuits.
Do not route the electricity cable in passageways.
Attention
Earthing is necessary and mandatory by law.