I.3
WARNINGS REGARDING POTENTIALLY TOXIC
SUBSTANCES
DANGER!
Read the following ecological information and
requirements about the refrigerants employed
carefully.
Strictly follow the manufacturer's instructions for any repairs.
Do not use any means other than those recommended by the
manufacturer, to speed up the defrosting process or for cleaning. If the
repairs are necessary, contact the nearest authorised service centre.
Any repairs carried out by unskilled personnel can be dangerous. For
this purpose, do not pierce or burn the unit.
The appliance must be stored in a place where possible sources of
ignition (open flames, gas appliances or electric heaters) do not work
continuously.
The appliance is intended to be installed outdoors but, if close to walls
or ceilings, please refer to the minimum spaces indicated in the
following table:
Amount of
≤1.2
refrigerant [kg]
Floor
Minimu
-
installation
m area
Wall mounting
of the
-
installation
room
Ceiling
[m
2
]
-
installation
Window
-
installation
If a fixed appliance is not equipped with a power cable and plug, or
other means to disconnect it from the mains in category III overvoltage
conditions, the instructions must indicate that these means must be
incorporated in the fixed wiring according to the wiring rules.
The appliance must be stored in a well-ventilated area so as to save
energy. The appliance must be stored so as to avoid mechanical
damage.
I.3.1.1 Identification of the type of refrigerant fluid
use
R32 refrigerant: Difluoromethane (CH
CAS No.: 75-10-5
I.3.1.2 Identification of the type of oil
The lubricating oil is PVE; in any case, refer to the instructions on the
compressor data plate.
DANGER!
For further information regarding the
characteristics of the refrigerant fluid and oil, refer
to the safety data sheets available from the
refrigerant and oil manufacturers.
I.3.1.3 Main Ecological Information Regarding the
Types of Refrigerant Fluids Used
Persistence, degradation and environmental impact
Fluid
Chemical formula
R32
CH
F
2
R32 refrigerant belongs to the family of hydrofluorocarbon fluids and is
regulated by the Kyoto protocol (1997 and subsequent revisions) since
it is a fluid that produces a greenhouse effect. The measure of how
much a given refrigerant is estimated to contribute to the greenhouse
effect is the GWP (Global Warming Potential). The standard measure
for carbon dioxide (CO
) is GWP=1. The value of GWP assigned to
2
each refrigerant represents the equivalent amount in kg of CO
over a period of 100 years, in order to have the same greenhouse effect
as 1kg of refrigerant released over the same period of time.
The R32 refrigerant does not contain elements that are harmful to the
ozone, such as chlorine; therefore, its ODP (Ozone Depletion Potential)
is zero (ODP=0); it is also odourless and has a low flammability index.
PROTECT THE ENVIRONMENT!
The hydrofluorocarbons contained in the unit
cannot be released into the atmosphere as they are
gases that contribute to the greenhouse effect.
1.4
1.6
1.8
2.0
2.2
16.8
22
27.8
34.3
41.5
1.9
2.4
3.1
3.8
4.6
1.3
1.6
2.1
2.6
3.1
6.1
7.9
10
12.4
15
F
)
2
2
GWP (over 100 years)
675
2
released
2
R32 is derived from hydrocarbons which decompose relatively rapidly
into the lower atmosphere (troposphere). Decomposition by-products
are highly dispersible and thus have a very low concentration. They do
not affect photochemical smog, that is, they are not classified among
VOC volatile organic compounds, according to the guidelines
established by the UNECE agreement.
Effects on effluent treatment
Waste products released into the atmosphere do not cause long-term
water contamination.
Personal protection/exposure control
Use protective clothing and gloves; protect eyes and face.
Professional exposure limits:
R32
TWA 1000 ppm
Handling
DANGER!
Users and maintenance personnel must be
adequately informed about the risks of handling
2.4
potentially toxic substances. Failure to observe the
aforesaid indications may cause personal injury or
49.4
damage the unit.
5.5
DANGER!
Any person involved in working with the
3.7
refrigeration cooling circuit must possess a valid
certificate issued by an accredited industry
17.8
assessment authority, which authorises his/her
competence in handling refrigerants safely, in
accordance with an acknowledged evaluation
specification.
DANGER!
Maintenance must be performed as recommended
by the manufacturer of the equipment.
Maintenance and repairs that require the assistance
of other specialised personnel must be performed
under the supervision of the person who is
responsible for using flammable refrigerants.
Avoid inhalation of high concentrations of vapour. The atmospheric
concentration must be reduced as far as possible and maintained at this
minimum level, below the occupational exposure limits. The vapours
are heavier than air, and thus hazardous concentrations may form close
to the floor, where overall ventilation may be poor. In this case, ensure
adequate ventilation. Avoid contact with naked flames and hot surfaces,
which could lead to the formation of irritant and toxic decomposition by-
products. Do not allow the liquid to come into contact with eyes or skin.
If hot works are required on the cooling equipment or on any associated
device, adequate fire-prevention equipment must be readily available.
For this purpose, have a dry powder or CO2 extinguisher adjacent to
the loading area. When electrical components are changed, they must
be suitable for the purpose.
The following checks must be applied to systems that use flammable
refrigerants:
- the load amount depends on the clearances of the spaces that the
unit is installed in;
- the fans work properly and the respective outlets are not blocked;
- the marking on the equipment must always be visible and legible;
markings and symbols that are illegible must be replaced;
- the pipe where the refrigerant flows or the components of the circuit
are installed in a position that prevents them from being exposed to
any substance that can corrode the components, unless they are
made of materials that are not resistant to corrosion or adequately
coated for this purpose.
When repairing sealed components, all power supplies must be
disconnected before removing any sealed covers, etc. If an electrical
supply is strictly necessary for the equipment during maintenance, then
a leak detector must be installed in the maximum critical point to warn
of a potentially dangerous situation.
Particular attention must be paid to the following so as to ensure that,
when working on electrical components, the coating is not altered to the
extent that the level of protection is affected. This includes damage to
the cables, too many connections, terminals that do not conform to the
original specifications, damaged seals, etc.
26
ELECTA-ECO