Hitecsa EWNLM 115 Manual De Instalación, Funcionamiento Y Mantenimiento página 28

I.5 WARNINGS REGARDING SUBSTANTIALLY
TOXIC SUBSTANCES
DANGER!
Read the following information about the
refrigerants employed carefully.
Adhere scrupulously to the warnings and first aid
procedures indicated below.
I.5.1.1 Identification of the type of refrigerant fluid
used
Difluoromethane (HFC 32) 50% by weight
CAS No.: 000075-10-5
Pentafluoroethane (HFC 125) 50% by weight
CAS No.: 000354-33-6
I.5.1.2 Identification of the oil type used
The lubricant used in the unit is polyester oil; please refer to the
indications on the compressor data plate.
DANGER!
For further information regarding the features of the
refrigerant and oil used, refer to the safety data
sheets available from the refrigerant and oil
manufacturers.
I.5.1.3 Main Ecological Information Regarding the
Types of Refrigerant Fluids Used
Persistence, degradation and environmental impact
Fluid Chemical formula
R32 CH F
2
R125 C HF
2 5
HFC R32 and R125 refrigerants are the single components which,
mixed at 50%, make up R410A. They belong to the hydrofluorocarbon
group and are regulated by the Kyoto protocol (1997 and subsequent
revisions) as gases that contribute to the 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
The GWP value assigned to each refrigerant represents the equivalent
amount in kg of CO released over a period of 100 years, in order to
2
have the same greenhouse effect of 1kg refrigerant released over the
same period of time.
The R410A mixture does not contain elements that are harmful to the
ozone layer, such as chlorine, therefore its ODP (Ozone Depletion
Potential) is zero (ODP=0).
Refrigerant
Components
Composition
GWP (over 100 years)
SAFEGUARD THE ENVIRONMENT!
The hydrofluorocarbons contained in the unit
cannot be released into the atmosphere as they are
fluids that contribute to the greenhouse effect.
R32 and R125 are hydrocarbons which decompose relatively rapidly in
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 produce long-term
water contamination.
Personal protection/exposure control
Use protective clothing and gloves; protect eyes and face.
Professional exposure limits:
R410A
HFC 32 TWA 1000 ppm
HFC 125 TWA 1000 ppm
GWP (over 100 years)
550
2
3400
) the GWP index =1.
2
R410A
R32/R125
50/50
ODP 0
2000
Handling
DANGER!
Users and maintenance personnel must be
adequately informed about the risks of handling
potentially toxic substances. Failure to comply with
the aforesaid indications may cause personal injury
or damage the unit.
Avoid inhalation of high concentrations of vapour. Atmospheric
concentration must be reduced to a minimum and maintained at this
minimum level, well beneath professional exposure limits. Vapour is
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 irritating and toxic decomposition
products. Do not allow the liquid to come into contact with eyes or skin.
Procedure in case of accidental refrigerant escape
Ensure adequate personal protection (using means of respiratory
protection) during clean-up operations. If the conditions are sufficiently
safe, isolate the source of leak.
If the amount of the spill is limited, let the material evaporate, as long as
adequate ventilation can be ensured. If the spill is considerable,
ventilate the area adequately.
Contain the spilt material with sand, soil, or other suitable non-
absorbent material.
Prevent the liquid from entering drains, sewers, underground facilities or
manholes, because suffocating vapours may form.
I.5.1.4 Main toxicological information on the type
of refrigerant used
Inhalation
A high atmospheric concentration can cause anaesthetic effects with
possible loss of consciousness. Prolonged exposure may lead to
irregular heartbeat and cause sudden death.
Higher concentrations may cause asphyxia due to the reduced oxygen
content in the atmosphere.
Contact with skin
Splashes of nebulized liquid can produce frostbite. Probably not
hazardous if absorbed through the skin. Repeated or prolonged contact
may remove the skin's natural oils, with consequent dryness, cracking
and dermatitis.
Contact with eyes
Splashing liquid may cause frostbite.
Ingestion
While highly improbable, may produce frostbite.
I.5.1.5 First aid measures
Inhalation
Move the person away from the source of exposure area, keep him/her
warm and let him/her rest. Administer oxygen if necessary. Attempt
artificial respiration if breathing has stopped or shows signs of stopping.
In the case of cardiac arrest carry out heart massage and seek
immediate medical assistance.
Contact with skin
In case of contact with skin, wash immediately with lukewarm water.
Thaw tissue using water. Remove contaminated clothing. Clothing may
stick to the skin in case of frostbite. If irritation, swelling or blisters
appear, seek medical assistance.
Contact with eyes
Rinse immediately using an eyewash or clean water, keeping eyelids
open, for at least ten minutes.
Seek medical assistance.
Ingestion
Do not induce vomiting. If the injured person is conscious, rinse his/her
mouth with water and make him/her drink 200-300 ml of water.
Seek immediate medical assistance.
Further medical treatment
Treat symptoms and carry out support therapy as indicated. Do not
administer adrenaline or similar sympathomimetic drugs following
exposure, due to the risk of cardiac arrhythmia.
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SECTION I: USER