(1) automotive air conditioning also needs to be maintained. For example, Baotou North Ben heavy duty truck parts and compressor belt is loose, refrigerant is not enough, refrigerant oil is not missing, condenser dirty is not dirty, air conditioning filter exchange is not changed, all of which are directly related to the cooling effect of air conditioning. It is possible to clean the surface of the condenser and evaporator for the air-conditioner with poor cooling effect. At present, many auto repair shops have specialized air conditioning maintenance services, proper maintenance can not only maintain good working condition of the air conditioning system, but also can improve the service life of the air conditioner. Therefore, we must attach great importance to the maintenance and care of air conditioners. If your air conditioning and refrigeration is not good enough, we should check it, take good care of the air conditioning system, it will give you a cool return.

(2) check the tightness of air conditioning belt is too loose, easy to slip, too tight will increase the bearing load, the idler wheel to adjust the tightness of the belt. When the air conditioning system is open, attention to the functioning of the compressor operation observation, see there is no violent vibration, compressor internal abnormal noise, electromagnetic clutch and pull out is normal, and the compressor oil seal and the connecting pipe joints have no grease, to determine whether there is leakage of refrigerant.

(3) in order to ensure the normal operation of the whole air-conditioning system of Baotou Bei Ben heavy duty truck and have good refrigeration effect, it is very important to keep the condenser surface clean. Therefore, the condenser should be cleaned regularly to prevent oil pollution, soil and other debris attached to the condenser. The cleaning condenser can be washed from inside and outside with high pressure water gun, then rinse from the outside, and the water pressure can not be too large to prevent the heat sink from being washed down. It can also be washed with soft brush, but be careful not to touch the condenser radiator, so as not to affect the ventilation and heat dissipation. It is better to install the screen in front of the condenser, which can effectively prevent the insect and the velvet into the heat sink.

(4) because most of the evaporator is installed under the dashboard, it is difficult to disassemble and disassemble, and it is inconvenient to clean. Therefore, we must keep the filter inside the car and air conditioner clean. When we maintain the car, we should remove the air conditioning filter core and clean it with high pressure air, and replace it at least 1-2 times a year to keep the evaporator clean. When there are more dust in the air, the external circulation should be closed so as to reduce the pollution of the air conditioning filter core.

(5) prevent the air conditioning system from producing fungus and odor. Regular cleaning of air duct and replacement of air conditioning filter element is the key to keep the air fresh. It is better to clean the air conditioning ventilation system once a month. Cleaning air conditioning is actually very simple. First, choose a bottle of quality guaranteed air conditioner cleaning agent, which is very important for cleaning effect. We must see clearly the acid and base of cleaning agent. Generally speaking, pH level is 7-9. Then put the air filter out all the air outlet on the car, the wind blow to the body, open the blower and the outer loop, a wind speed, then the cleaning agent sprayed into the air inlet from the filter, when the cleaning agent from the air outlet, the outlet is closed; the wind blowing down conversion later, the conversion to blow. In the conversion of wind direction, the cleaning agent should be sprayed into the air duct to ensure that the detergent enters the various channels of the air conditioning system. This step will last for a few minutes. Finally, turn the direction of the wind back and forth, but do not open the outlet, close the fan and the outer circulation, remove the dust on the filter core and put it back in place (preferably replace the filter element). After this cleaning, the quality of the air in the car will be greatly improved.

In addition, during the use of air conditioning, a lot of dust will be inhaled. The maximum air volume can blow out the floating dust on the inner surface of the air duct regularly, which is also a simple way to keep the air conditioner clean.

(6) under normal circumstances, refrigerants will not be consumed. The maintenance of the refrigerants is mainly the cleaning of Baotou Bei Ben heavy duty parts condensers and the working condition of the cooling fans. If the air conditioner has poor refrigeration effect or even no refrigeration, most of them are caused by the leakage of refrigerant. The reason for leakage may be the aging of the sealing ring of the pipe joint and the over high refrigerant pressure. Before the leakage failure is not excluded, do not blindly add refrigerants, or during the period of time, the problem of air conditioning will not be cold. When the leakage fault is repaired or the main components of the refrigeration system are changed, a certain amount of refrigerant oil is needed to be supplied to the system. Before the refrigerant is added, the system must be evacuated into vacuum before confirming that it can be charged without leakage. We must use premium brand and the same type or the refrigerant and refrigeration oil that meet the requirements, otherwise it may cause the compressor to work abnormally, and there are malfunctions such as poor refrigeration, pipeline corrosion and important parts damage.