Before loading, you must first pre-cool or pre-heat the car for about 1.5 hours. Because the vehicle is parked in the open air, usually the temperature of the cabin is the temperature of the external environment. Generally speaking, the temperature of the cargo being transported cannot be the ambient temperature. If so, there is no need to transport the refrigeration unit. When the goods are loaded into the car, the ambient temperature inside the car will affect the temperature of the goods, which will result in changes in the quality of the goods being transported. Therefore, the car must be pre-cooled to the necessary temperature before loading.
Close chiller assembly cargo unloading chiller temperature loss slower
It is necessary to turn off the refrigeration unit when loading and unloading. Many people do not turn off the refrigeration unit when loading and unloading the goods, thinking that this will make the temperature of the goods rise more slowly. In fact, this is a very wrong understanding.
If the refrigeration unit is not turned off, when the compartment door is opened, since the fan of the evaporator of the refrigeration unit is working, the fan blows cold air out from the upper part of the compartment, and the lower part will quickly suck in the hot air outside, causing the temperature inside the compartment to rise rapidly. If the cargo is loaded and unloaded after shutdown, the air flow stops because the fan is in a stopped state, and the wind pressure inside and outside the compartment is consistent, and the hot air entering outside is slower.
Clean the transport refrigeration unit frequently, keep the interior of the car clean and clean
Cleaning and transporting the refrigeration unit compartment has two functions. One is to maintain the environmental sanitation inside the compartment and prevent the strange smell inside the compartment. This should be well understood. The transport refrigeration unit is a bit like a refrigerator. If you don't pay attention to cleaning, it is easy to have a strange smell. Transport refrigeration units often carry different cargo, especially fish, meat, etc., and the toilet is cleaned once after each shipment.
Another function is to prevent the evaporator fan of the refrigeration unit from sucking impurities into the evaporator coil, thereby reducing the refrigeration effect of the refrigeration unit. This is why the transport refrigeration unit will use a few years later and everyone will feel that the cooling effect is not as good as the start.
