Warning! Although R134a is not poisonous, flammable or explosive in any proportion with air at normal temperatures, safety precautions must be observed.
Refrigerant R134a is a colorless and odorless gas with the same specific gravity as air. Therefore, when it enters the atmosphere, especially in inspection pits, it can cause asthma attacks and cardiac disorders. When working with it, turn on exhaust ventilation. Smoking is strictly prohibited in the workplace.
The filled circuit with the refrigerant of the air conditioner is under excess pressure. Before repairing the air conditioner, the refrigerant must be pumped out. Avoid welding or soldering a filled air conditioner or in quantities that may leak R134a. In contact with flames or when exposed to high temperatures (50°С) toxic decomposition products may appear (fluorine gas).
Recovery and charging of R134a refrigerant must only be carried out using a service unit. Charge the air conditioner with purified refrigerant. Any contact with R134a refrigerant in liquid or gaseous state should be avoided. Work on the refrigerant circuit should only be carried out with protective goggles and gloves. The affected areas of the body must be thoroughly washed with cold water. If the refrigerant R 134a gets into the eyes, rinse them with plenty of cold water and remove any contact lenses. Then immediately consult a doctor.
In case of complications caused by inhalation of R134a refrigerant vapors, it is also necessary to immediately consult a doctor. If refrigerant oil comes into contact with the mucous membrane of the esophagus, do not induce vomiting, but immediately consult a doctor.
Necessary conditions for the good operation of the air conditioner are maximum cleanliness during work, as well as, if possible, a more complete evacuation (at least 30 minutes to dry the refrigerant circuit) before each filling of the conditioner.
R134a refrigerant absorbs moisture well, so open pipes, condenser, evaporator, compressor or dryer tank should be plugged immediately. When replacing parts, remove the plugs only immediately before connecting the parts to the pipelines.
In the event of a warranty repair, plugs must be installed on the removed parts so that the cause of the damage can be identified. If the air conditioner was depressurized during an accident or during repair, then it is necessary to replace the dryer element, because. at the same time, too much moisture could get into it.
Cylinders filled with R134a refrigerant must be stored away from direct sunlight or other sources of heat (maximum +45°C), as well as shock loads in the form of a fall.
Extinguish fire with carbon dioxide (CO2), powder (sand) or spray water. Collect leaked refrigerant oil with water-binding material, and dispose of the extracted oil.
Attention! After each full charge of the air conditioner, it is necessary to check the tightness of the installation of the protective caps of the filling valves. They serve as an additional seal.