ISA ZERO MY20 User manual

ISA S.p.A.
Via Madonna di Campagna 123 - 06083 Bastia Umbra PG - Italy
T. [phone] ● F. [phone] ● E. [email protected]
www.isaitaly.com
1
ZERO MY20
EN 428001318037
Use and maintenance manual
ZERO
MY20

2
ZERO MY20
EN 428001318037
Use and maintenance manual
1. NOTES / WARNINGS 4
2. MANUFACTURER 9
3. WARRANTY TERMS AND CONDITIONS 9
4. IDENTIFYING THE EQUIPMENT 10
5. SAFETY 11
5.1 SAFETY DEVICES INSTALLED 11
5.2 FIXED GUARDS 11
5.3 ISOLATING THE ELECTRIC POWER SUPPLY 11
5.4 CIRCUIT FAULTS 11
5.5 WARNING SIGNS (IF ANY) 11
5.6 FALLING OBJECTS 11
5.7 COOLING 11
5.8 FOOD SAFETY (PACKAGED PRODUCTS) 11
6. RESIDUAL RISKS 12
6.1 RISK OF CONTACT WITH LIVE PARTS 12
6.2 FIRE 12
6.3 EXPLOSIVE ATMOSPHERE 12
6.4 SLIPPING 12
6.5 TRIPPING 12
7. DISPOSAL OF WASTE MATERIAL 13
8. MAINTENANCE 14
9. FAULTS - TECHNICAL AFTER-SALES ASSISTANCE 15
10. STORAGE 16
11. PROLONGED APPLIANCE SWITCH-OFF 16
12. INSTALLATION 17
12.1 UNPACKING 17
12.2 ENVIRONMENTAL CONDITIONS 20
12.3 ELECTRICAL CONNECTION 20
12.4 CLEANING WATER DRAINAGE PLUMBING CONNECTION 20
12.5 POSITIONING / LEVELLING 21
12.6 CONDENSATE DRIP TRAY INSTALLATION 22
12.7 WALL MOUNTING 23
13. COMPOSITION 24
14. USE 24
14.1 LOAD LIMITS 24
14.2 PRELIMINARY CELL CLEANING 25
14.3 MANUAL OPERATION WITH "HEATED NEEDLE PROBE" 25
14.4 CONTAINERS AND LIDS 26
14.5 FOOD ARRANGEMENT 26
14.6 PRODUCT TEMPERATURE 26
14.7 SHELF LOAD LIMITS 26
15. TECHNICAL SPECIFICATIONS 27
15.1 PREPARATIONS 29
16. CONTROL PANEL 31
16.1 USER INTERFACE 32
17. CLEANING 37
17.1 INTERNAL 37
17.2 CONDENSING UNIT 38
17.3 CLEANING WATER COLLECTION TRAY 39
17.4 DEFROST WATER COLLECTION TRAY (IF PRESENT) 39

3
ZERO MY20
EN 428001318037
Use and maintenance manual
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 manual
Danger: Live electrical parts
Attention / hazard
Information
Eye check
Danger: Slipping
Danger: Tripping
Earthing
High temperature hot surfaces
Danger: Flammable material
Use of protective clothing
Requests for maintenance or operations must be carried out by qualied staff or technical after-sales centres
Important information
Operations that must be performed by two persons
Notes / warnings
Waste disposal
Recyclable materials

TRANSLATION OF THE ORIGINAL INSTRUCTIONS
4
ZERO MY20
EN 428001318037
Use and maintenance manual
1.
NOTE
The content of this manual is of a technical nature and the property of ISA. It is
forbidden to reproduce, disclose or modify, either wholly or partially, its content
without written authorisation. Any infringement will be legally pursued.
The manual and the conformity certicate are an integral part of the equipment and
should always accompany the product in the event of a transfer to a new location or
to a new owner. The user is responsible for the integrity of these documents, for their
consultation and during the whole life cycle of the equipment itself. Keep this manual
in a safe place.It should be available for consultation near the equipment at all times.
If lost or destroyed, you can request a copy of the manual from ISA by specifying
the exact model, serial number and year of manufacture. The manual reects 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.
The equipment can be used by children no younger than 8 and by persons with
reduced physical, sensory or mental capabilities, or lacking experience or necessary
knowledge, as long as supervised or after having received training regarding safe use
of the equipment and have an understanding of the inherent risks involved. Do not
allow children to play with the device. The cleaning and maintenance that the user will
carry out must not be undertaken by children without supervision.
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 damage to persons, animals or to the
product in the following cases:
• Improper use of the equipment or use of the appliance by unqualied 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 schedule.
• Unauthorised modications.
• installation of non-original spare parts in the equipment.
• Installation and use of the equipment for purposes other than those for which it
was designed and sold.
• Tampering with or damage to the power supply cable.
NOTES / WARNINGS

TRANSLATION OF THE ORIGINAL INSTRUCTIONS
5
ZERO MY20
EN 428001318037
Use and maintenance manual
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 qualied 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.
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 appliance 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 appliance. They
should also read this manual in its entirely. Maintenance work should be conducted
by qualied personnel after the appliance has been prepared adequately.
DANGER
Unauthorised tampering or replacement of one or more parts of the appli-
ance, use of accessories that modify the use of the same and use of spare
parts different to those recommended, can become the cause of injury.
DANGER
Any work conducted on the appliance must involve disconnection from the
power socket and in any case, none of the protective elements (grid, casing)
should be removed by non-qualied staff.The appliance should not be operat-
ed when these protective elements have been removed. Before carrying out
any cleaning, maintenance or replacement operation, disconnect the equip-
ment from the mains by unplugging it from the electrical socket. During these
operations the operator must be able to ensure that the plug remains discon-
nected.
NOTE
Particularly complex installation and maintenance tasks are not documented
in this manual to avoid compromising the functionality and safety of the de-
vice and should be carried out by manufacturer’s specialised technicians.
Never use electric devices inside this appliance. Do not use mechanical devices or
other means to accelerate the defrosting process, other than those recommended by
the manufacturer. Keep the air vents in the casing of the appliance or in the structure
built into the wall free of obstructions. Do not damage the refrigeration circuit.
The A-weighted emission sound pressure level is less than 70 dB(A).

TRANSLATION OF THE ORIGINAL INSTRUCTIONS
6
ZERO MY20
EN 428001318037
Use and maintenance manual
RISK OF EXPLOSION
Do not store products containing ammable propellants or explosives.
ISA uses materials of the best quality and as they enter the company, we constantly
monitor their storage the use as part of the manufacturing process to prevent dam-
age, deterioration and failure. All manufacturing elements have been designed and
manufactured in order to guarantee high safety and reliability standards. All applianc-
es are 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 appli-
ance’s initial appearance and functions over time.
The use and maintenance manual contains the information required to understand
the operating modes of the appliance and for its correct use, in particular: the tech-
nical description of the various functional units, accessories and safety systems, op-
eration, use of instrumentation and interpretation of any diagnostic warnings, main
procedures and information relating to the ordinary maintenance operations. For
correct use of the appliance, the working environment should comply with current
health and safety standards.
The safety requirements, indications, standards and notes illustrated in the various
chapters of the 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
• Disposal
ATTENTION
Reading of this manual, albeit in full, is no substitute for adequate user experi-
ence. Therefore it should only be considered a useful reminder of the technical
features and the main operations to be performed.

TRANSLATION OF THE ORIGINAL INSTRUCTIONS
7
ZERO MY20
EN 428001318037
Use and maintenance manual
WARNING
The installers and users MUST read and understand the instructions
contained herein before any operation on the appliance.
STAFF TRAINING
The buyer is responsible for ensuring personnel who will use the appliance and
maintenance technical staff are instructed and trained adequately. The manufacturer
is available for advice, clarications, etc. so that the operator and technical staff can
use the appliance correctly. To ensure operator safety, appliance devices should be
kept in constant working order. This manual is intended to illustrate the use and
maintenance of the appliance.The operator has a responsibility and duty to carefully
observe the instructions contained within it.
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 delivery to the customer, it is essential that the specialised technical
staff check that the equipment is working correctly to ensure maximum per-
formance is obtained .
REFRIGERANT
R744
The refrigerant R744 is a gas that is compatible with the environment. Be very
careful when transporting and installing the appliance and during scrapping to
avoid damaging the refrigerant circuit pipes.
IN THE EVENT OF DAMAGE:
Keep ames or sources of ignition away from the appliance. Properly ventilate
the premises for a few minutes. Turn the unit off, pull out the plug. Notify the
customer service department.
ATTENTION
The refrigerant system works at High Pressure. Do not tamper with
the system, but call a specialised and qualied technician before
disassembly.
ATTENTION
Maintenance must be performed by qualied personnel that has been to work
with ammable refrigerants.

TRANSLATION OF THE ORIGINAL INSTRUCTIONS
8
ZERO MY20
EN 428001318037
Use and maintenance manual
REFRIGERANT
R290
The refrigerant R290 is a gas that is compatible with the environment, but is highly
ammable. Be very careful when transporting and installing the appliance and
during scrapping to avoid damaging the refrigerant circuit pipes.
IN THE EVENT OF DAMAGE:
Keep ames or sources of ignition away from the appliance. Properly ventilate the
premises for a few minutes. Turn the unit off, pull the plug. Notify the customer
service department. The more refrigerant containing an appliance, the greater
must be the environment in which there is the unit. In areas too small, in the event
of leakage can form a ammable mixture of air and gas. The volume of the room
where the appliance is installed must be at least 19 m³ for each cooling system
present in the room.
ATTENTION
Maintenance must be carried out by trained technical personnel authorised to
work on ammable refrigerants.
REFRIGERANT
R600a
The refrigerant R600a is a gas that is compatible with the environment, but is
highly ammable. Be very careful when transporting and installing the appliance
and during scrapping to avoid damaging the refrigerant circuit pipes.
IN THE EVENT OF DAMAGE:
Keep ames or sources of ignition away from the appliance. Properly ventilate the
premises for a few minutes. Turn the unit off, pull the plug. Notify the customer
service department. The more refrigerant containing an appliance, the greater
must be the environment in which there is the unit. In areas too small, in the event
of leakage can form a ammable mixture of air and gas. The volume of the room
where the appliance is installed must be at least 17 m³ for each cooling system
present in the room.
ATTENTION
Maintenance must be carried out by trained technical personnel authorised to
work on ammable refrigerants.

9
ZERO MY20
EN 428001318037
Use and maintenance manual
3. WARRANTY TERMS AND CONDITIONS
The seller guarantees their equipment for a period of 12 (twelve) months from delivery.
The warranty includes repairs or replacements of any faulty parts due to manufacturing processes or installation after written
communication has been received, stating the appliance serial number and date of installation.
Not included in the warranty:
• Incorrect use of the appliance.
• Incorrect connection to the power grid.
• Normal wear of the components (such as breakage of the compressors, of the neon/LED lights, etc.) if not due to
manufacturing defects.
• Calls for installation, technical instructions, adjustments, condenser cleaning.
If the seller's technical staff detect any tampering, unauthorised repairs or inappropriate use of appliance the warranty will be
invalidated.
Shipment of components covered by the warranty is freight collect only.
Any damage to the appliance detected at the time of delivery due to transport must be reported on the same shipping note to
claim compensation from the carrier.
The seller cannot be held liable in the event of damage to accepted products due to appliance faults.
2. MANUFACTURER
ISA S.p.A.
Via Madonna di Campagna 123
06083 Bastia Umbra PG - Italy
T. [phone]
F. [phone]
E. customerserviceisaitaly.com
www.isaitaly.com

10
ZERO MY20
EN 428001318037
Use and maintenance manual
4. IDENTIFYING THE EQUIPMENT
Find the label axed on the machine to read the technical data.
Check the machine model and the power supply voltage before you perform any operation.
If discrepancies are found, contact the manufacturer or the company that offer the supply immediately.
1
IDENTIFICATION OF THE COMPANY RESPONSIBLE FOR THE PRODUCT
2 SYMBOLS OF COMPLIANCE
3 TYPE
4 MODEL NAME
5 ARTICLE
6 PRODUCTION DATE
7 PRODUCTION ORDER
8 CUSTOMER ORDER
9 PRODUCT CLASS
10 SERIAL NO.
11 OWNER REGISTRATION NUMBER
12 POWER SUPPLY VOLTAGE
13 SUPPLY FREQUENCY
14 FUSE VALUE
15 LAMP POWER
16 ELECTRICAL RESISTOR ABSORPTION
17 NOMINAL POWER (NORMAL OPERATION)
18 POWER (DEFROSTING)
19 MINIMUM PRESSURE
20 MAXIMUM PRESSURE
21 SAFETY CLASS
22 RATED CURRENT
23 CURRENT DURING DEFROSTING
24 SHELF LOAD
25 TANK LOAD
26 TYPE OF COOLANT
27 WEIGHT OF COOLANT
28 GROSS VOLUME
29 EXPANDING INSULATION AGENT
30 WEEE MARK

11
ZERO MY20
EN 428001318037
Use and maintenance manual
5. SAFETY
The appliance is equipped with safety devices. 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 appliance is installed. Users/
operators must be aware of the position of all the controls and how they work, as well as of the features of the appliance. They
should also read this manual in its entirely.
5.1 SAFETY DEVICES INSTALLED
Devices whose operation prevents the occurrence of risk situations in operating conditions (e.g. fuses, pressure switches,
protections, magnet circuit breakers, etc.).
5.2 FIXED GUARDS
Fixed protective devices consist of xed perimeter guards, which are used to prevent external parts from entering the equipment.
DANGER
It is prohibited to re-start the appliance following maintenance without having correctly restored the panels.
VISUAL OBSERVATION
Periodically check the integrity of the xed guards and the relative xings to the structure with particular attention to
the protection panels.
5.3 ISOLATING THE ELECTRIC POWER SUPPLY
Before conducting any maintenance work on the equipment or on its parts, it is necessary to section the relevant power supply.
DANGER
In the event of maintenance operations where the operator cannot prevent accidental closure of the circuit by others,
completely disconnect the appliance from the mains electricity.
5.4 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 appliance devices regularly.
5.5 WARNING SIGNS (IF ANY)
The equipment is equipped with danger, attention and obligation warning plates dened in accordance with the legislation on graphic
symbols to be used on the systems. The plates are located where they are clearly visible
.
ATTENTION
Any warning plates on the appliance must not be removed.
The user is responsible for replacing warning signs that, owing to wear, become unreadable.
5.6 FALLING OBJECTS
Positioning of the cabinet display parts (where present) of the equipment (i.e. counters, rods and hooks, etc.), as well as the
arrangement of the products inside the cabinet can be the source of potential hazards if not properly performed. Follow the
positioning instructions described in this Manual before you place products inside the cabinet, check that the counters are
properly fastened, as also the hooks, etc. Do not exceed the maximum load limit. Do not exceed the maximum load limit. Do not
position tilted product on the counters if they are not held in place by their stoppers.
5.7 COOLING
During different operations to perform on the counter, such as cleaning or loading goods, it is necessary to handle products and/
or counter parts at a low temperature with the risk of “cold injury” for the operators and/or accidental slipping hazard. Follow
the safety regulations in the place where the cabinet is installed; more specically, be sure to always use correct PPE (especially
gloves) .
5.8 FOOD SAFETY (PACKAGED PRODUCTS)
Packaged products cannot be used for the cold phase; they can damage food and the equipment .

12
ZERO MY20
EN 428001318037
Use and maintenance manual
6. 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 appliance.
ATTENTION
Periodically check that all safety devices are operating correctly.
Do not remove the xed guards.
Do not introduce unauthorised objects or tools into the work area.
Although the appliance is tted with the safety devices prepared, there are still some risks that cannot be eliminated, but
reduced via corrective actions by the nal integrator and correct operational procedures. Below is a summary of the remaining
risks associated with the appliance during:
Normal operation.
Adjustments and ne-tuning.
Maintenance.
Cleaning.
6.1 RISK OF CONTACT WITH LIVE PARTS
Risk of breaking or damaging the electrical components of the appliance, 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. current at the point of installation is not higher than that indicated
on the protection switches in the electrical panel, otherwise the user must provide dedicated limiting devices. It is
strictly forbidden to make any type of electrical modication to avoid creating additional hazards and consequent
unforeseen risks.
6.2 FIRE
DANGER
In the event of a re, immediately disconnect the master switch from the main power supply line.
6.3 EXPLOSIVE ATMOSPHERE
6.4 SLIPPING
DANGER
Any leaks in the areas surrounding the appliance may cause personnel to slip. Check that there are no leaks and
keep these areas clean at all times.
6.5 TRIPPING
DANGER
Generally, untidy deposits of material may constitute a tripping hazard and a total or partial obstruction of
emergency exit routes. Ensure operational, transit and escape routes, free from obstacles, and comply with the
current regulations.
The equipment must not be located in an area classied as an explosion risk according to 1999/92/EC
such as:
Zone
0An area in which there is a permanent, long-lasting or frequently explosive atmosphere made up of a mixture of air
and ammable substances in the form of gases, fumes or steam.
1An area in which the formation of an explosive atmosphere, made up of a mixture of air and ammable substances
in the form of gases, fumes or steam is occasionally probable during normal activities.
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.
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.

13
ZERO MY20
EN 428001318037
Use and maintenance manual
7. DISPOSAL OF WASTE MATERIAL
During normal operation, the appliance 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 contributes to preventing potential negative consequences that might
derive from an inadequate disposal of the product. For detailed information about recycling this product, contact your
council, your local waste collection service or the store where you purchased the product.
PROCEDURE FOR DISPOSAL and RECYCLING AT THE END OF APPLIANCE LIFE CYCLE
(AUTHORISED BODIES)
• Switch off the equipment and unplug the power supply cable.
• Remove the lamps (if installed). These should be disposed of separately.
• Remove the power supply units and the electronic cards. These must be disposed of separately.
• Disassemble all the independent parts (grids, casings, proles, etc.) and separate them by homogeneous material characteristics,
in order to access the heat exchangers, pipes, cables, etc. being careful not to damage the refrigeration circuit.
• Remove all mobile parts (doors, sliding doors, glass parts, etc.) and group the various materials according to their similar
features.
• Check the type of refrigerant on the plate inside the counter; remove the refrigerant and dispose of it through the authorised
services.
• Disconnect the evaporator, condenser, compressor, pipes and fans; the tubes being made of copper, aluminium, steel and
plastic must be disposed of separately.
• After removing all the casings and the various components from the frame, separate the different types of material that
compose them (plastic, sheet metal, polyurethane, copper, etc.) and group by homogeneous characteristics.
All recyclable materials and waste must be treated and recycled in a professional manner and in accordance with the
directives of the country in question. The company assigned to recycling must be registered and certied as a waste
disposal service according to the specic directives of the country in question.
ATTENTION
Illegal disposal of the product by the owner will result in the application of administrative sanctions provided by the
laws in force. Disposal of the product should comply with current laws on the disposal of coolant liquids and mineral
oils.
IMPORTANT
If the crossed-out wheelie bin symbol is not attached to the device, it means that the manufacturer is not responsible
for disposal of the product; in this case, the current regulations on waste disposal always apply. Contact the competent
municipal oce, the local waste disposal service or the shop where the product was purchased.
ADDITIONAL INFORMATION
Further information on how to dispose of coolant and oils and other substances can be found on the safety data sheet
of the substances themselves. To dispose of foamed assemblies, remember that the polyurethane foams used are
CFC-, HFC- and HCFC-free.

14
ZERO MY20
EN 428001318037
Use and maintenance manual
8. MAINTENANCE
The Staff in charge of the appliance must control and respect the expiry dates for maintenance, given in the table below,
contacting the authorised Technical Assistance when indicated.
ATTENTION
After any maintenance it is mandatory to perform the electric safety tests in compliance with the IEC EN 50106
Standard.
FREQUENCY
Maintenance Manager According to Use and Requirement Monthly Every 6 months Annual
Cleaning the external surfaces
USER
Cleaning of accessible internal parts(without the use of tools)
Check integrity of sealing gaskets
Control of power supply cable/plugs and/or electrical sockets
Cleaning the condenser unit lter(If present)
Cleaning the defrosting water collection tray
TECHNICAL ASSISTANCE
Cleaning the water collection tank (inside the tank - if present)
Condenser cleaning
Control of oil level of compressor (Where present)
Venting of air tank (Where present)
Control of pneumatic connections (Where present)
Check the integrity of chiller system piping
Inspect cables and internal power connections
Cleaning of the condensation dryer sponges(Where present)
Replacement of lights / LEDs (Where present)
Replacement of control panel (Electronic control unit - thermostat - etc.)
Replacing the power supply cable, plugs and/or electric sockets
Ordinary Maintenance
Extraordinary Maintenance

15
ZERO MY20
EN 428001318037
Use and maintenance manual
9. FAULTS - TECHNICAL AFTER-SALES ASSISTANCE
In case of uncertain or no operation, before requesting the intervention of the Technical Assistance service
perform the following checks:
MALFUNCTION CAUSE SOLUTION MANAGER
THE EQUIPMENT DOES NOT WORK
Blown protective fuse First nd the cause of the trip of the switch, and then replace the
new fuse. User
The master switch is open Close the master switch. User
The plug is not inserted Insert the plug. User
Electrical black-out If the blackout continues for a long time, transfer the product into
an appropriate refrigerated container. User
THE TEMPERATURE IS NOT SUFFI-
CIENTLY LOW
Wrong temperature setting Set the appropriate temperature. User
Equipment being struck by currents of air or
exposed to direct or reected sunlight
Eliminate air currents and always avoid direct sunlight
or reections of the sun. User
Insucient air ow for cooling to the
condenser
Remove anything which could obstruct air circulation through the
condenser (sheets of paper, cardboard, insuciently slotted grids,
etc.).
User
High ventilation Technical
Assistance
Internal fans not working or damaged fans Replace the ventilators/fans. Technical
Assistance
Thermostat / Electronic control board not
ecient
Replace the thermostat/electronic control board.
If the electronic control board is used on appliances with R290 cool-
ant, it must only be replaced with an original spare part supplied
by the manufacturer. Replace the temperature probes only after
checking which of the two is not operating eciently.
Technical
Assistance
Condenser unit blocked by dust or dirt in
general
Clean the condensing unit thoroughly.
The condensing unit in particular operating environments (e.g.
presence of dust, presence of excessive humidity, etc.) when
the performance of the appliance deteriorates requires careful
cleaning.
Technical
Assistance
Insucient refrigerant quantity in the
cooling system
Find the cause of the refrigerant leak and eliminate it; rell the
refrigerant, possibly preceded by new emptying the system.
Technical
Assistance
THE COMPRESSOR DOES NOT
START WORKING OR WORKS FOR
VERY SHORT PERIODS
No electric power supply to the appliance Check if there is a power cut.
Close the various switches on the power supply line. User
Power supply voltage too low
Check that the mains voltage of the power power supply corresponds
to the nominal value 220V +/- 10%.
User
Temperature set too high
If the temperature is higher than the air temperature in the display
chamber, the compressor will not start. Set a more suitable tem-
perature if the current value is not low enough.
User
Maximum pressure switch intervention (if
present)
Check the cause of the continuous interventions of the maximum
pressure switch such as: blocked air condenser, air condenser fan
stopped, excessively high ambient temperature, breakage of the
pressure switch itself.
Technical
Assistance
THE TOUCH SCREEN DOES NOT
REACT TO COMMANDS The display is dirty Clean the display. Turn the equipment off and on again. User
FOOD DOES NOT REACH THE
REQUIRED TEMPERATURE
Incorrect cooling cycle setting Check the program and correct the food distribution inside the cell. User
Incorrect division of the food on the trays Check, if any, obstructions to correct air circulation. User
High thickness of the food Reduce the thickness of the food. User
Presence of cover or lid Remove the cover or lid. User
THE TEMPERATURE SIGNALLED BY
THE PIN PROBE IS INCORRECT
Incorrect insertion of the pin probe Check correct insertion of the pin probe into the core of the
product. User
The pin probe is damaged Use only timed or assisted programs.
Contact the Technical Assistance Service for replacement. User

16
ZERO MY20
EN 428001318037
Use and maintenance manual
The appliance, with or without its packaging, must be carefully stored inside warehouses or in areas protected from the weather
and from direct sunlight, at a temperature of between 0and +40°C.
+40°C MAX
0°C MIN
Remove the product contained in the refrigerated compartment and place it immediately in a suitable refrigerated container to
ensure proper storage.
Open the equipment and wait for it to reach room temperature and then clean it.
Leave the door/sliding panels open by 2-3 cm so as to guarantee circulation of the air and prevent the formation of mould and
bad smells inside the appliance.
The appliance, with or without its packaging, should be carefully stored inside warehouses or in areas protected from the
weather and from direct sunlight, at a temperature of between 0and +40°C.
+40°C MAX
0°C MIN
PROLONGED APPLIANCE SWITCH-OFF11.
10. STORAGE

17
ZERO MY20
EN 428001318037
Use and maintenance manual
12. INSTALLATION
All packaging materials are recyclable and should be disposed of in accordance with local regulations. All packaging materials
are recyclable and should be disposed of in accordance with the local regulations. Please destroy "plastic" bags to prevent
them from becoming hazardous to children (suffocation).
12.1 UNPACKING
ATTENTION
Handling of the equipment must only be performed using a forklift truck of adequate power (with respect to
the weight of the equipment) and operated by qualied personnel: during this operation the equipment must
strictly be positioned on the appropriate pallet supplied.
1

18
ZERO MY20
EN 428001318037
Use and maintenance manual
12.1 UNPACKING
2

19
ZERO MY20
EN 428001318037
Use and maintenance manual
12.1 UNPACKING
3
T5
T8 - T12 - T16

20
ZERO MY20
EN 428001318037
Use and maintenance manual
12.2 ENVIRONMENTAL CONDITIONS
ATTENTION
A dry room that can be ventilated is the suitable location for the appliance's installation. There should be a good air
ow around the compressor/condensing unit. Therefore the area around the unit should not be obstructed by boxes
or other objects. Place the equipment away from sources of heat (radiators, heaters of any kind, etc.) and far from
the inuence of continuous air movement (caused by fans, air conditioning units, etc.). If it is unavoidable to install
near a heat source, use a suitable insulating plate. Also avoid exposure to direct solar irradiation; all of this causes
the temperature inside the refrigerated compartment to rise with negative consequences on operation and energy
consumption. Do not use the appliance outdoors and do not leave it exposed to rain.
12.3 ELECTRICAL CONNECTION
ATTENTION
Check that the network voltage matches the one displayed on the identication plate of the appliance, and that the
power is adequate. Check on the socket that the power supply voltage provides rated voltage (±10%) when you start
up the compressor. 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 plant power supply socket must be tted with
a disconnection device from the mains electricity (dimensioned to the load and in compliance with Standards in
force), which guarantees complete disconnection in category III (3) over-voltage conditions and therefore protects the
circuits against earth faults, overloads and short circuits. Do not route the electricity cable in passageways.
ATTENTION
Remember that earthing is necessary and is a requirement imposed by law.
12.4 CLEANING WATER DRAINAGE PLUMBING CONNECTION