For Chongqing refrigerated truck owners, understanding how to choose, use, and maintain refrigerated trucks is crucial. Refrigerated truck manufacturers come to talk about the key points of choosing a refrigerated truck, and introduce how to carry out daily maintenance of the key components of the refrigerated truck - chassis, refrigeration unit, and compartment, which can help car owners reduce unnecessary troubles in the selection and daily maintenance of refrigerated trucks.

1、 Key points for choosing refrigerated trucks

Refrigerated trucks mainly come in two forms: bicycles and trailers. For vehicles used for short distance delivery or loading of goods between urban areas and districts, refrigerated trucks with medium and light truck chassis can be selected.

When engaged in long-distance transportation, if the transportation volume is large, medium and heavy-duty vehicles or refrigerated trucks in the form of semi trailers need to be selected. The main components that affect the performance of refrigerated trucks are the chassis, insulated compartment, and refrigeration unit. Only when the quality of these three parts is up to standard, can the refrigerated truck reliably and stably perform during transportation

In the selection of refrigeration units, non independent refrigeration units are cheap and easy to maintain, but they do not have a power unit and rely on the car engine to drive the compressor. Due to the influence of the working condition of the car engine, their performance is not as good as independent units.

The independent refrigeration unit itself has an engine and generator device that can provide power and electrical energy for the refrigeration system. It can work independently and is not limited by the working state of the car engine. The performance is relatively stable, but the price is high and the accessories are expensive.

Therefore, when selecting a unit, the length of transportation distance should be considered comprehensively. For short distance delivery within the city or between districts and counties, and if the carriage is less than 7 meters, it is recommended to use non independent units.

When conducting long-distance transportation and the carriage is over 7 meters long, it is recommended to use an independent refrigeration unit. This way, even if the car engine stops working during transportation, the refrigeration unit can still cool normally, reducing the quality loss of the transported goods.

2、 How to use refrigerated trucks correctly

Only by using and operating refrigerated trucks correctly can the goods be transported and stored in good condition. A qualified refrigerated truck should ensure good ventilation conditions on all six sides of the compartment and no obstacles.

Because good air circulation is a key element in ensuring the appropriate temperature of goods. When the cold (hot) gas blown out by the refrigeration unit isolates the cold (hot) source entering the carriage from the goods, the quality of the goods can be protected.

If there is a blockage in a certain position inside the compartment, the cold (hot) source of that part will directly enter the goods, causing a change in the temperature of the goods. At the same time, it is necessary to ensure that the return air shutter is in good condition and not blocking the inlet of the evaporator (return air). Insufficient return air can cause irregular circulation of cold air, resulting in inconsistent temperature inside the compartment and freezing of the top cargo.