What are the precautions for car air conditioning maintenance in summer?

Maintenance of the car air conditioning system: 1) Pay attention to cleaning and moisture when overhauling the car air conditioning system, and be sure to prevent dirt, dust and moisture from entering the pipeline. 2) Wear protective glasses and gloves when repairing to prevent frostbite.

3) Circuit part. Before installation or maintenance work begins, remove the negative pole of the car battery. The replacement wiring must be secured with plastic tape or the original fasteners and bundled on the original wiring harness for easy maintenance.

If it is necessary to disassemble or move the position of the original wiring harness of the car or separate the wiring, it should be reset after repair. The part that needs to be replaced and can be welded should be used as far as possible to use the original color and original diameter of the wire, and the welding point should be wrapped with tape. Wires should not be secured to moving or hot parts when wiring.

4) Refrigeration system pipelines. When removing parts of the refrigeration system, care should be taken to seal other pipes to avoid moisture and dust ingress. When connecting the tubing, a few drops of refrigeration oil should be applied to the sealing ring at the joint.

Two wrenches should be used when tightening or loosening pipe joints. The connection of automobile air conditioning and refrigeration pipes must be firm and reliable, and should have good sealing performance, but it should not be overtightened and damage the thread. The installation dryer should be installed in the pipeline according to the specified direction.

The inlet of the dryer marked with the "in" mark should be connected to the pipeline at the outlet end of the compressor. The drain pipe inside the evaporator should be arranged in a position that does not come into contact with the car parts. 1) Refrigerant.

When filling the refrigerant, wear protective goggles to avoid eye contact with the liquid refrigerant. When draining the refrigerant from the refrigeration system, it should be done slowly, otherwise the refrigeration oil in the system will be discharged along with the refrigerant. When the engine is running, do not open the manual high-pressure valve on the manifold pressure gauge to make the refrigerant flow backwards into the refrigerant tank, otherwise it will cause an accident.

2) Refrigeration oil. The refrigeration oil should be covered tightly, and the unqualified refrigeration oil should not be used, but the refrigeration oil specified by the manufacturer should be used. In general, refrigeration oil can be filled before or after the system is evacuated.

3) When pressurizing leak detection, the pressure should not be exceeded, and it is best to use nitrogen for pressurized leak detection. 4) The fixing of each part of the air-conditioning and refrigeration system should be reliable, and each fixing screw should be equipped with a spring washer to prevent loosening. 5) If you need to store the used compressor for a long time, you should drain the air in the compressor, and then fill the compressor with refrigerant or dry nitrogen and store it.

10) When cleaning the system, only use special detergent or clean gasoline. It is forbidden to use alcohol or detergents containing moisture. Streaked oil stains or black oily foam on the glass of the inspection hole indicate that the system is faulty.

Hello, first check the refrigeration effect of the air conditioner, if the refrigeration effect is good, there is no problem. The main thing is to check the belt of the compressor.

The daily maintenance of the car air conditioner is mainly to pay attention to the following points:

1. Check whether the compressor belt is in good condition.

2. Replace the air conditioner filter regularly.

It is recommended to replace the air conditioning filter once every 10,000 kilometers, if it is not replaced for a long time, it will affect the refrigeration effect of the air conditioner.

3. Clean the water tank and condenser.

4.It is recommended to replace the air conditioning filter once every 10,000 kilometers, if it is not replaced for a long time, it will affect the cooling efficiency of the air conditioner.

<><Matters needing attention when using car air conditioners in the summer model hunger season

In the blink of an eye, it is the hot summer again, in this season, air conditioning has become the most inseparable equipment, so today I will introduce to you the precautions for the use of car air conditioning in summer.

The temperature of the air conditioner should be adjusted to a temperature suitable for the human body, the temperature should be neither too high (which will make people sleepy) nor too low (which can easily make people sick), usually, it is best to adjust it to 23-25 degrees is the optimal temperature.

When starting the vehicle, use the outer loop.

Many car owners think that turning on the internal circulation can quickly cool down, but in fact, the temperature inside the car is higher than the outside temperature at the beginning of summer, so the best way is to ventilate first and then turn on the external circulation to quickly reduce the temperature in the car.

The direction of the air outlet of the air conditioner should be adjusted.

Many car owners like to blow the air outlet to the person, this effect is very bad, the density of hot air is less than the density of cold air, the air outlet should be blown upward, so that the car can be quickly cooled.

The time to turn on the air conditioner should be grasped well.

Turning on the air conditioner for a long time will increase the burden on the condenser, which will not only affect the cooling effect of the car, but also cause certain damage to the engine, so you can turn it off a little for a while on.

Some car owners like to turn on the air conditioner when the vehicle is not started, so that although people feel comfortable, but the power used by the air conditioner at this time is in the car battery, which will lead to a serious battery feeding phenomenon.

The above are a few precautions for using air conditioners in summer introduced to you today, I hope you can pay attention to your intentions and avoid causing damage to your car.

<> "Precautions for the Maintenance of Automobile Air Conditioners in Summer."

In the summer, because of the hot weather, almost every car owner will turn on the air conditioner, because the frequency of use of the air conditioner increases, then it is inevitable that there will be some air conditioning failures, and when the fault appears and then solved, it will affect the use. Therefore, daily inspection and maintenance is very important.

1. Comprehensively inspect the air conditioner. When using the air conditioner for the first time in summer, you should first check the air conditioning system, such as checking whether the refrigerant and air conditioning filter are too dirty through the liquid storage tank, and whether the radiator has foreign objects. Only by doing a good job of inspection can we ensure that we can enjoy it when we use it, otherwise, it will not add to our own blockage!

2. Open the large air volume regularly. Many air conditioners make some noise when in use, especially when they are turned on to the highest setting. Some car owners don't like the noise made when the air conditioner is turned on to high gear, so they rarely or never turn the air conditioner to high air volume.

However, the air conditioner will suck in a lot of dust when it is used, and it is a simple way to keep the air conditioner clean by turning on the wind energy regularly to blow out the floating dust on the inner surface of the air conditioner. In addition, it is necessary to sterilize, clean and remove odors with a special air duct cleaning solution.

3. After stopping the car, do not turn off the air conditioner. After the car reaches the destination, turn off the air conditioning, stereo, etc., and then close the door and leave, which is the consistent practice of the general car owner after arriving at the destination. In the summer, when the heat is pure, the huge temperature difference between the inside and outside of the car can cause mold in the air conditioning system, which in turn can breed mold.

Therefore, the owner should turn off the air conditioner a few minutes before arriving at the destination, turn on the natural air, make the temperature in the air conditioning duct rise, eliminate the temperature difference with the outside world, so as to keep the air conditioning system relatively dry and avoid mold reproduction.

4. Pay attention to the cleaning of the air conditioner. The air conditioner filter is a "afraid of dirty" parts, don't wait until the air conditioner effect is not good, then think of cleaning the air conditioner, you should do the air conditioner filter to be replaced regularly, there is more dust in spring, catkins flying, these will stick to the filter, easy to breed bacteria, so that the air conditioner produces a musty smell, so it is best to replace it once a year after spring. In addition, the condenser should also be cleaned regularly, and the water tank should be removed to clean it thoroughly.

In short, the car air conditioner is still mainly based on trouser fiber maintenance, and the important item in the maintenance is inspection, which is the basic method to find problems. If you want to deal with it until the fault occurs and affects the use, it will take more time and effort.

1. When the automobile air conditioner is used for the first time in the season, it is best to sterilize and deodorize the air conditioning system, because the long-term "vacation" of the air conditioning system will breed fungi and mold, which not only makes the air emit an unpleasant musty smell, but also harmful to the health of the people in the car. This work can be carried out at the repair shop, or you can purchase special sprays for sterilization and deodorization to dispose of it yourself.

2. Don't adjust the temperature too low, adjusting the temperature too low will affect your health. Generally, the temperature difference between the inside and outside of the carriage is within 10.

3. When the air conditioner is turned on in the car, it is best not to smoke in the car, if you smoke, you should adjust the ventilation control of the air conditioner to the "outdoor circulation" position.

4. It seems very comfortable to lie in a stopped car with the air conditioner on, but it is not good because the ventilation in the car is poor, and sleeping with the air conditioner on may cause poisoning because the CO gas discharged by the engine leaks into the cabin.

5. When encountering traffic jams in the road-poor stove car, do not make the engine run at a higher speed in order to improve the efficiency of the air conditioner, which is a destructive use for the engine and the air conditioning compressor.

6. Do not use the air conditioner immediately when the temperature in the car is very high when parked in the scorching sun.

7. After parking, be sure to turn off the air conditioner to avoid the automatic opening of the air conditioner at the next ignition moment, which will increase the burden on the engine.

In addition, here are a few simple indicators to determine the performance of air conditioners.

1. Temperature index: Temperature index is the most important index. The most comfortable temperature for a person is 20 to 25, and above 28, the person will feel hot.

Below 14, the person will feel "cold". Therefore, the air conditioner should control the temperature in the car between 18 and 25.

2. Humidity index: The humidity index is expressed by relative humidity. Because the relative humidity that people feel most comfortable with is around 50%.

3. Air quality: carbon monoxide in the exhaust gas of the automobile engine, dust on the road, and toxic pollen in the wild are easy to enter the cabin, causing the air in the car to be turbid and affecting the health of personnel. In this way, the car air conditioner must have the function of replacing and filtering the air in the car to ensure the quality of the air in the car.

4. Defrosting function: Because sometimes the temperature difference between the inside and outside of the car is too large, fog frosting will appear on the glass, affecting the driver's line of sight, so the car air conditioner must have a good defrosting function.

5. Operation performance: the driver can not be distracted by the operation of the car air conditioner, which will affect the normal driving of the driver.

1.Different grades of refrigerated oil can not be mixed and used, 2When cleaning the air conditioning system pipelines, compressed air should not be used, but nitrogen or refrigerant gas.

3. The larger the throttle opening of the automobile engine, the smaller the vacuum degree of the hole flap generated by the intake manifold.