General description
1. Air conditioning is installed on some models as an option. It allows you to lower the temperature of the air in the cabin, reduce its humidity, which increases comfort and contributes to the rapid fogging of the windows.
2. The cooling part of the air conditioner works like a normal home refrigerator. The gaseous refrigerant enters the belt-driven compressor, passes through a condenser mounted on the radiator of the engine cooling system, where it loses heat and becomes liquid. The liquid enters through the expansion valve into the evaporator and changes its state from liquid at high pressure to gaseous at low pressure. This transition is accompanied by the absorption of heat, and. means lowering the temperature and cooling the evaporator. The refrigerant returns to the compressor and the cycle repeats.
3. The air, having passed through the evaporator, passes through the heater system, where it mixes with the hot air that has passed through the heater radiator, thus reaching the required temperature in the vehicle interior. When the air conditioner is in automatic mode, the mixing of warm and cool air is controlled by a set of valves with servomotors, regulating the temperature in the cabin.
4. The heating part of the system operates in the same way as heating systems on vehicles without air conditioning (see paragraph 9).
5. The air conditioner is controlled by commands from the electronic control unit. BEU controls the electric fan, compressor and indicators on the front panel. If problems occur in the system, contact your VAG dealer. The air conditioner has a built-in system.-diagnostics, but its use requires the use of specialized equipment.
Precautionary measures
6. When performing any work on a car equipped with air conditioning. special precautions must be taken. If it is necessary to open the system, have the task carried out by a refrigeration repair technician or contact your dealer. Opening and filling the system also require the participation of a specialist.
Warning: The air conditioner contains liquefied gas - refrigerant. The refrigerant is potentially hazardous and should only be handled by a qualified person. If uncontrolled opening, the refrigerant evaporates immediately. If the refrigerant gets into the skin, frostbite is possible. The refrigerant itself is not dangerous, but in the presence of an open flame it forms a poisonous gas; inhalation of refrigerant vapors through a lit cigarette is fatal. The gaseous refrigerant is heavier than air and can accumulate in various recesses, such as a pit.
7. Uncontrolled opening of the system harms the environment - some refrigerants contain freon.
8. Do not turn on the air conditioner if you know that there is not enough refrigerant in it - you can damage the compressor.
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