The refrigeration unit of a refrigerated truck is the most important part of the entire vehicle. The cooling effect of the refrigeration unit and the performance of the refrigeration are the most direct and influential factors for the quality of the refrigerated truck. Different refrigeration units also caused different prices for refrigerated trucks . Therefore, the maintenance and the maintenance of the refrigeration unit is also an indispensable process in the daily use of the vehicle. After the refrigeration unit of the well-maintained vehicle is maintained, a high-quality transportation environment and transportation effect can be achieved.
1. When venting air for the refrigerant of a refrigeration unit of a refrigerated truck, the high temperature system should be performed only after the vehicle has been parked. When the system is to be interrogated, it must be performed at the time of operation. In the specific operation, be sure to be careful, the plug can not be opened too large and can not leave the driver when opening the plug. Air operation can be divided into several times. It can't be bothersome. It can put too much air in one shot so as to avoid releasing excess refrigerant.
2. When refueling the refrigerating unit of a refrigerated truck , first connect the other end of the refueling pipe to the refueling valve at the inlet side of the compressor to open it slightly, and use the pressure in the system to discharge the air in the refueling pipe. At one end, insert it into the oil drum. The system refrigerant supply valve should be turned down properly, and the low pressure alarm device of the suction gas should be debugged so as to avoid the situation of stopping because of the low pressure. When the suction pressure is lower than the atmospheric pressure, the filling valve needs to be opened, so that the oil will automatically enter the compressor.
3. When adding and replenishing the refrigerant for the refrigerant in the refrigeration unit of a refrigerated truck, first connect one end of the fluoridation tube to the system's fluoridation port, and connect the other end of the fluoridation port to the fluorine bottle. Use a fluoridation tube to remove the air from the pipeline in China. After opening the valve of the fluorine bottle, check and confirm that there is no leakage or any abnormality, and then open the valve of the fluorine port. The P23 system is supposed to put the bottle mouth up, and the P404A system should be to lower the bottle mouth, which can guarantee the speed of fluoride. When the fluorine is over, the valve of the fluorine port is first closed, and the valve of the fluorine port is closed.
It is not just these three points mentioned above that when a refrigerated truck is used on weekdays, it should also be well-maintained to keep the refrigeration unit clean. After each use of the refrigerated truck , it is necessary not only to clean the refrigerated compartment but also to clean the refrigerating unit. This not only ensures the effect of the refrigerating unit, but also prolongs the service life thereof.
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