Electra Air-Conditioning MQH 10T, Installation And Maintenance Manual

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6
Safety
2.7 Safety regulations
Refrigerant data Safety data: R410A
Toxicity Low
Contact with skin
R410A vapors can irritate the skin and eyes. In liquid form, it can freeze
skin on contact. If contact with skin occur, flush the exposed area with
lukewarm water until all of the chemical is removed. If there is evidence
of frostbite, bathe in lukewarm water.
Contact with eyes If contact with eyes occur, immediately flush with large amounts of
lukewarm water for at least 15 minutes, lifting eyelids occasionally to
facilitate irrigation. Seek medical attention as soon as possible.
Ingestion Very unlikely - should something happen, it will cause frost burns. Do not
induce vomiting. Only if the patient is conscious, wash out mouth with
water and give some 250 ml of water to drink. Then, obtain medical atten-
tion.
Inhalation Inhalation of the R41 0A vapor may cause irritation. Vapor inhalation at
high concentrations may result in asphyxiation or the heart may become
sensitized, causing cardiac arrhythmia. When concentration of R410A
reach levels which reduce oxygen to 14-16% by displacement, symptoms
of asphyxiation will occur. An individual exposed to high concentrations of
R410A must be given medical attention immediately. Adequate ventila-
tion must be provided at all times.
Recommendations
Semiotics or support therapy is recommended. Cardiac sensitisation has
been observed that, in the presence of circulating catecholamines such
as adrenalin, may cause cardiac arrhythmia and accordingly, in case of
exposure to high concentrations, cardiac arrest.
Prolonged exposure
R410A: a study on the effects of exposure to 50,000 ppm during the whole
life of rats has identified the development of benign testicle tumour. This
situation should therefore be negligible for personnel exposed to concen-
trations equal to or lower than professional levels.
Professional levels
Stability R410A is stable under normal operating conditions.
Conditions to avoid Do not use in the presence of high temperatures, flames, burning
surfaces and excess humidity.
R410A: Recommended threshold: 1000 ppm v/v - 8 hours TWA.
Hazardous reactions Contact with certain red-hot metals may result in exothermic or explosive
reactions and yield toxic and/or corrosive decomposition products.
Specific materials to avoid include freshly abraded aluminum surfaces
and active metals such as sodium, potassium, calcium, powdered alumi-
num, magnesium and zinc.
Hazardous decomposition
products
R410A: Halogen acids produced by thermal decomposition and hydroly-
sis.
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