I.5
WARNINGS REGARDING SUBSTANTIALLY
TOXIC SUBSTANCES
DANGER !
Read the follo wing information about the
refrigerants emplo yed car efully.
Adher e scrupulously to the warnings and first aid
procedures indicated belo w.
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 pol yester oil; pleas e refer to the
indications on the c ompress or data plate.
DANGER !
For further information regarding the features of the
refrigerant and oil u sed, r efer to the safet y data
sheets available from the refrig erant and oil
manufacturer s.
I.5.1.3
Main Ecological Information Regarding the
Types of Refrigerant Fluids Used
Persistence, d egradation and environmental impact
Fluid
Chemical formula
R32
CH
F
2
R125
C
HF
2
HFC R32 and R125 r efrigerants are the si ngle components whic h,
mixed at 50% , make up R410A. They belong to the hydrofl uoroc arbon
group and are regulated by the Kyoto protocol (1997 and s ubs equent
revisions) as gases that c ontribute to the greenhouse effect. T he
measure of how muc h a given refrigerant is esti mated to c ontribute to
the greenhous e effect is the GWP (Global War ming Potential). The
standard measure for c arbon di oxide (CO
The GWP value assigned to each r efrigerant represents the equi valent
amount in kg of CO
released over a period of 100 years, in order to
2
have the same greenhouse effect of 1kg refrigerant releas ed over the
same period of ti me.
The R410A mi xture does not c ontain elements that are harmful to the
ozone layer, suc h as chlorine, therefore its ODP (Ozone Depletion
Potential) is zer o (ODP=0).
Refrigerant
Components
Composition
GW P (over 100 year s)
SAFEGUARD THE EN VIRONMENT !
The h ydrofluorocarbons contain ed in the unit
cannot be r eleased into the atmosph ere as they are
fluids that contribute to the greenhouse effect.
R32 and R 125 are hydrocarbons which decompose relati vel y rapidl y in
the l ower atmos phere (tropos pher e). Decomposition by-produc ts are
highly dispersible and thus have a ver y low c onc entration. They do not
affec t photochemic al smog (that is, they are not cl assified among VOC
vol atile organic compounds, accordi ng to the guidelines established by
the UNECE agreement).
Effects on effluent treatment
Waste produc ts released into the atmosphere do not produce long-term
water contamination.
Person al protection/exposur e control
Use protecti ve cl othing and gloves; protect eyes and fac e.
Professional exposur e limits:
R410A
HFC 32
TWA 1000 ppm
HFC 125
TWA 1000 ppm
GW P (over 100 year s)
550
2
3400
5
) the GWP index =1.
2
R410A
R32/R125
50/50
ODP
0
2000
Handling
DANGER !
Users and maintenance per sonnel must be
adequately informed about the risks of handling
potentially toxic substances. Failur e to comply with
the aforesaid indications may cause per sonal injur y
or damage the unit.
Avoid inhal ation of high concentrati ons of vapour. Atmospheric
concentrati on mus t be reduced to a mi nimum and maintained at this
minimum level, well beneath professional expos ure limits . Vapour is
heavi er than air, and thus haz ardous c oncentrati ons may for m clos e to
the floor, where overall ventilation may be poor. In this cas e, ens ure
adequate ventilation. Avoid c ontact with naked flames and hot s urfac es,
which could lead to the for mati on of irritating and toxic decomposition
produc ts. Do not allow the liquid to come i nto c ontact with eyes or s ki n.
Procedur e in case of accid ental r efriger ant escap e
Ensure adequate personal protec tion ( using means of respiratory
protecti on) during clean-up operations. If the c onditions are s ufficientl y
safe, isolate the s ource of l eak.
If the amount of the s pill is limited, let the material evaporate, as long as
adequate ventilation can be ensur ed. If the s pill is consi derable,
ventilate the area adequatel y.
Contai n the s pilt material with sand, soil, or other suitable non-
absorbent material.
Prevent the liquid from entering drains, sewers, underground facilities or
manhol es, because suffocating vapours may for m.
I.5.1.4
Main toxicological information on the type
of refrigerant used
Inhalation
A high atmospheric concentration can c ause anaes thetic effects with
possible loss of conscious ness . Prol onged exposure may lead to
irregular heartbeat and c aus e sudden death.
Higher concentrations may c aus e as phyxi a due to the reduced oxygen
content i n the atmospher e.
Contact with skin
Splashes of nebulized liquid can produce frostbite. Probabl y not
hazardous if absorbed through the s kin. Repeated or pr olonged contac t
may remove the s kin's natural oils, with c onsequent dr yness, crac ki ng
and der matitis.
Contact with eyes
Splashi ng liquid may caus e fr ostbite.
Ingestion
While highly i mprobable, may produc e frostbite.
I.5.1.5
First aid measures
Inhalation
Move the person away from the s ource of exposure area, keep him/her
war m and l et hi m/her rest. Administer oxygen if necess ary. Attempt
artificial respiration if breathing has stopped or shows signs of stopping.
In the c ase of c ardiac arrest carr y out heart massage and seek
immediate medical assistanc e.
Contact with skin
In cas e of contac t with s ki n, was h immediatel y with l ukewar m water.
Thaw tissue usi ng water. Remove c ontaminated clothi ng. Clothing may
stick to the s ki n in c ase of frostbite. If irritation, s welling or blisters
appear, s eek medical assistance.
Contact with eyes
Rinse immediately using an eyewas h or clean water, keeping eyelids
open, for at leas t ten minutes.
Seek medical assistance.
Ingestion
Do not induce vomiting. If the injured person is conscious , rinse his/her
mouth with water and make hi m/her drink 200-300 ml of water.
Seek i mmedi ate medical assistance.
Further medical treatment
Treat s ymptoms and c arry out s upport therapy as indicated. D o not
administer adrenaline or similar s ympathomimetic drugs following
expos ure, due to the ris k of cardi ac arrhythmi a.
29
SECTION I: USER