How to turn on the air conditioner in the car: the operating rules


Such convenience in the car, like air conditioning,is not only an element of luxury, but also the first necessity when traveling during the hot season. At this time, you can even feel how the asphalt melts under your feet in a virtually literal sense. Just want to be on some ice mountain to refresh. Of course, how to turn on the air conditioning in the car, most drivers know, but do they all know how to use it correctly ?! This interesting and entertaining question is worth studying in more detail.

Not luxury, but a must!

Currently, the air conditioner is presentpractically in every car of foreign or domestic production of the middle price category. And its inclusion, by and large, is made purely reflexively, like the way we always close our eyes when we sneeze. Many owners of their vehicles do not even know how the refrigeration equipment works. Therefore, there is a high probability that it is operated in the wrong way.

How to properly include air conditioning in the car

Manufacturers make every effort to ensure,to use the air conditioning was as comfortable as possible. All you need to do to the driver is to press the power button and select the desired temperature mode. All the rest of the system will do without the participation of a person.

With all the ease of controlling the air conditionerthere are certain nuances, some of which are known to many drivers. But there are also those that are difficult to detect independently. Therefore, it is necessary not only to know how to properly include the air conditioner in the car, but also to understand a little about its operation.

Interesting observations

Under the creation of a favorable and comfortablemicroclimate is the maintenance of a certain temperature regime and humidity level. And this applies not only to premises (residential, industrial, industrial) - some of us spend most of the time in the car in connection with the specifics of the work.

In fact, it is not about attaining the necessarycomfort level. Even in the distant 50-ies, some observations were observed. Thus, at a temperature of +30 ° C and higher in humans, the reaction rate decreases. And for the driver it is especially important, because on the road situations require increased attention and quick response.

Exceeding the value of +25 ° C leads to an increasedfatigue. And at +10 ° C, hypothermia can occur. Few of us can resist the effects of temperature, especially its fluctuations. The car air conditioner provides the driver with the necessary level of comfort, which allows him to always be in good spirits.

Air conditioning unit

The question of how to properly include air conditioning in a car in the summer is interesting to many drivers, but how it works is no less curious.

How to properly include air conditioning in a car in the summer

Depending on the model of the car, the air conditioning unit is different, but in any case the main components are:

  • compressor;
  • capacitor;
  • evaporator;
  • fan (sometimes several);
  • safety valve;
  • receiver-dehumidifier;
  • expansion valve.

Also in the device of the car air-conditioner there are two main lines:

  • high pressure line;
  • low pressure line.

Of all this, the most importantcompressor. This is the most complex unit of the entire air-conditioning system of any car. His job is to compress the gaseous refrigerant, which has low temperature and pressure. As a result of compression, the pressure increases and the temperature rises.

Additional protective devices

Sometimes in the car air-conditioning systema number of additional safety devices are included. For example, with the help of a low-pressure sensor, the operation of the compressor is regulated. At a pressure marking of less than 2 kg / cm2 it turns off, and when it reaches 2.3 kg / cm2 he again begins to work. Some drivers are wondering: why is the car heated when the air conditioner is on? Perhaps this indicates a malfunction of one of the sensors, but in most cases the fault is a dirty radiator.

It is the responsibility of the high pressure sensor to turn off the compressor when the system pressure rises to 30-34 kg / cm2, and the inclusion at 26 kg / cm2. The sensor responsible for the blower fans starts to operate as soon as the pressure in the system reaches 19-22 kg / cm2, and turns off as soon as the pressure drops to 14-16 kg / cm2.

How to turn on the air conditioner in the car

Compressors may also be presenttemperature sensor, which is located on its body. When reaching 90-100 ° C, it turns off the electromagnetic clutch. In some models, instead of a whole set of sensors, combined elements can be installed that can perform several tasks.

Receiver-dehumidifiers can also be equipped withprotective system in the face of a safety valve, which has a readily alloyed insert. It works in the following way: it's only necessary to raise the temperature of the device to 90 ° C, as the insert melts and the coolant comes out.

Principle of operation of equipment

To resolve the issue, how to turn on the air conditioner inmachine, it is worthwhile to draw a parallel. The car assembly by the principle of action can be compared to a household similar device, which is present in every kitchen. The basis is based on a well-known regularity by physicists: matter evaporates - thermal energy is absorbed, and when the substance, on the contrary, condenses, heat is released.

It is only necessary to press the power buttonconditioner, how the electromagnetic clutch works, which causes the clamping disk to be magnetized to the pulley, and the system starts to work in idle mode. The shifter, in turn, is connected to a belt through which the rotation from the crankshaft is transmitted. Thus, when the engine is running, it always rotates.

Why the machine is heated while the air conditioner is on

What happens at this moment? The compressor starts working, which compresses the refrigerant and sends it to the coder, thereby creating pressure in the system. There, under the influence of a fan (one or several), it cools and condenses, and then enters the dehumidifier where it passes the filtration. Purified freon passes the thermostatic valve, which monitors and regulates the level of the refrigerant overheating. Perhaps this knowledge will help in solving the problem, which drivers often tell: "I turn on the air conditioner, the car stalls."

Then the gas through the pipeline entersevaporator. And since freon is already under low pressure, then it has a low boiling point. And as one can understand from the name of the device, the refrigerant begins to evaporate in it, that is, to pass from the liquid state to the gaseous consistency. At the same time, heat is actively absorbed.

As a rule, the evaporator is locateddirectly under the instrument panel. Then a fan enters the case, which directs the cooled airflow to the cabin through the ventilation holes.

After the refrigerant has evaporated, it entersinto the compressor, and the cycle is repeated an infinite number of times over and over again. Knowing this it is now necessary to use the car air conditioner more competently.

Features of conditioning then and now

The refrigerant fills the whole systemcar conditioning. The first time in the system was refueled R12, but later it was discovered that it is unsafe for humans. This problem is more serious than another issue that many drivers have: with the air conditioner turned on, the machine jerks. Therefore I had to look for an urgent replacement, which did not take long to wait - freon R134a. True, the new refrigerant is less effective, but it does not pose a threat to the human body.

When the air conditioner is turned on, it drips under the machine

Due to the fact that the new gas has an increasedfluidity, the work of engineers has become much more complicated. In addition, the novelty finally put an end to the possibility of using old freon R12. This is due to the fact that different refrigerant oil is used to lubricate the compressor. For the old refrigerant, mineral oil was used, while for freon R134a a polyalkylene glycol lubricant is required. Thus, the freons of the old and the new generation are incompatible with each other.

To avoid any problems manufacturersplace a special label on the cover of the hood on which the refrigerant grade is indicated. And to be sure there was no confusion, these labels are of different colors. Freon R134a is identified with green color, and R12 - with a yellow hue.

Proper operation of the air conditioner

In the heat without air conditioning is impossible with comfortto move by car. How to turn on the air conditioner in the car, and do it every time correctly? First of all, it's a good idea to park your car only in shaded areas. Every time finding an ideal place is unlikely to work, but whenever possible always it is worth parking in the shade. It will not hurt to find out if it is possible, where it will be at a certain point in time.

If the parking lot is located directly under the sun, then usually in the morning the car will be in the sun, and after lunch with high probability there will already be a drop.

Turn on the air conditioning machine stalls

Parked in an open parking lot, it is worthUse special protective means that cover the glass. This will avoid excessive heating in the cabin. But what can you do if the car is still very hot? In this case, immediately turn on the air conditioner - you need to start airing the cabin. To do this, just open the windows and ride a little. The speed of 10-15 km / h is enough to ensure that the hot air in a hurry left the car interior.

Correctly turn off the air conditioning is not less important!

It is important not only to correctly useconditioner - it is necessary to make its correct switching-off. Then, probably, you do not have to think about why, when you turn on the air conditioner, the car stalls. And first of all it is worth remembering that on arrival at the destination, do not immediately muffle the engine, as this negatively affects the operation of the air-conditioning system. And to save it, you need to follow simple rules:

  • After stopping the car first thing should beturn off the air conditioner, let the engine work. Although it is better to do this at the entrance to the destination - air will still have enough time to remain chilled.
  • After the air conditioner is switched off, the fan must be left on.

Regarding the last point - includedThe fan allows the evaporator to dry. Otherwise, the development of various bacteria, including moss, can not be avoided. This, in turn, can lead to the formation of an unpleasant odor in the cabin, and as a result, respiratory system diseases will not take long to wait.

Maintenance issues

Do not neglect and maintenanceconditioner. Namely, to make a regular replacement of the filter, and also to monitor the state of the condenser (it is also a radiator). If necessary, clean it by blowing with compressed air. In addition, annually use antibacterial agents to clean the air conditioning system. Otherwise, this situation is not ruled out: when the air conditioner is turned on, it drips under the machine.

When the air conditioner is on, the machine jerks

From time to time, it is necessary to change the refrigerant itself, which is done only in a specialized service. In addition, it is desirable to purchase only original parts.


Using air conditioning, it should be remembered that the operating refrigeration equipment takes some of the engine's power, resulting in increased fuel consumption.

Temperature drops also deserveclose attention. If the outside temperature is high, do not turn the car interior into a refrigerator. The human body does not tolerate serious changes. In some cases, you can lose consciousness, once again in a hot environment.

It is enough to keep the cabin temperature 24FROM. In this case, the driver will always remain dry and will protect himself from health problems. After reading the material, how to turn on the air conditioner in the car will not be a problem anymore. And the device will be safe, and the driver with the passengers will be healthy.

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