Correct trial method of automobile air conditioner

1、 How to deal with the poor refrigeration effect

In most cases, the biggest culprit is not using it correctly.

Internal circulation improves refrigeration efficiency

Although it is not recommended to use the air conditioning for a long time, if the refrigeration is to be the fastest and most effective, the internal circulation can not be ignored. Another function of internal circulation is to prevent the entry of unclean air. If the car is driving on dusty road, the internal circulation can prevent the dust from entering the vehicle.

Discharge the hot air from the car

When the windows are closed, the air conditioning system is the most efficient. However, if the car is parked in the hot sun for a long time and it is very hot, open the window after opening the air conditioner, and then close it after the hot air is discharged. The cooling speed of air conditioning will be greatly accelerated.

Select the wind speed gear

In order to prevent excessive frost formation of evaporator and affect the operation of air conditioning system, air supply speed and temperature control of air conditioner should not be placed for a long time at the same time. However, when the speed is lower than 25km / h, the wind speed switch should be placed in the low speed gear to avoid insufficient power generation and insufficient air conditioning.

Select the wind direction of the air outlet

The wind direction of the refrigeration time-space regulation is upward, because the cold air will sink, and the wind direction gear is selected to blow the face block. Adjust the air outlet upward effect, do not choose the gear of the blowing gear, because the high temperature of the windshield glass will offset most of the cooling effect.

2、 How to maintain the air conditioning of automobile

Because of the complex working environment, compared with the domestic air conditioning, automobile air conditioning needs more care.

Check the compressor belt

If the belt surface contacts the pulley groove with bright side and there is "squeaking" noise when starting the air conditioner, it means that the belt is slipping seriously, the belt and pulley should be replaced; if the belt is too loose, it should be adjusted, otherwise it will make the air conditioning system poor refrigeration.

Check the air conditioning system hose connections for oil stains. If leakage is found, go to the maintenance department in time to solve it.

Clean condenser

In summer, the air conditioner is washed with water pipe to the condenser, because the surface of the condenser is clean so that the heat can be emitted to the outside. Cleaning condenser surface regularly can greatly improve the cooling effect of air conditioning system.

Check the height of refrigerant level

The refrigerant level can be checked by using the observation window of the dryer. Glass peepholes are usually installed on the cover of the dryer, run the engine and air conditioning system, and observe the flow of refrigerant through the glass peepholes. If the air conditioner works normally, clear refrigerant can be seen from the peephole, and occasionally carry some small bubbles in case of high temperature. When the air conditioning system is turned off, small bubbles can be seen.

The refrigerant should be sufficient

It can be measured by feeling the temperature difference between the inlet and outlet lines of the dryer or by manifold pressure gauge. Of course, these jobs need to rely on the maintenance plant.

3、 How to deal with the brake to become soft

Many drivers reflect that the braking performance of the vehicle will be poor when air conditioning is used. This situation is especially prominent in vehicles equipped with carburetor engine and low-speed electronic fuel injection engine.

The reason is that the engine load becomes larger when the vehicle is on air conditioning. In order to reduce the decline of vehicle power performance, the engine control system is generally equipped with air conditioning idle lifting device. This device is realized by a electromagnetic or vacuum suction bag to slightly open the throttle valve for an angle. When braking, even if the driver releases the accelerator pedal, the intake branch pipe behind the throttle valve can not reach normal vacuum, so it will affect the braking effect of the vehicle, and the more obvious the performance of this condition is on the engine with smaller displacement. So, in hot summer, when you brake when air conditioning is on, you need to step on the pedal more hard than usual.

4、 How to prevent air conditioning poisoning

Experts remind that the use of air conditioning in the car for a long time can lead to carbon monoxide poisoning. Carbon monoxide is produced because the engine is idle, gasoline combustion will not be sufficient, resulting in a large number of carbon monoxide containing exhaust gas. In order to prevent the air-conditioning leakage, people often close the windows when the air conditioner is open, which causes carbon monoxide to be unable to be discharged in time, and the exhaust gas gradually gathers in the car, and people will be unknowingly poisoned by carbon monoxide. The light people have nausea, vomiting, headache, dizziness, and heavy can cause mental disorder, incontinence of defecation, paralysis of limbs, even paralysis of respiratory center, and death of heart. There are such instances of loss of life around us.

It should be said that the prevention of carbon monoxide poisoning, in addition to the car should always check whether the car seal is tight, if the vehicle still needs air conditioning when the vehicle is stopped, do not close all the windows, and pay attention to ventilation in the vehicle. Remind you that the vehicle should open windows to change air frequently even when driving.

5、 How to remove the peculiar smell of air conditioning

Many people feel that the wind power of their own air-conditioners is not enough, they are also mixed with dust and odor. Unclean air conditioning can cause dizziness, nausea and even upper respiratory diseases.

In order to solve this problem, dismantling and cleaning evaporation box is the most thorough method. This method can fundamentally eliminate odor. However, every time it is disassembled, a series of processes such as fluorine releasing, installation and fluorine addition are required. It is difficult and difficult to use. The cost to be paid by the owner is not too expensive. There is a new type of spray specially designed to remove the peculiar smell of air conditioning. We just need to turn on the air conditioner, turn the wind into the outer loop, close the window, and spray the spray product from outside the air inlet for 10 seconds to 20 seconds. This product can be attached to the surface of the evaporation box along with the air channel, and kill the mould by the function of the product itself, thereby further clearing the odor and purifying the air in the vehicle.