Do not stack goods in front of the evaporator outlet, otherwise it will hinder the cold air flow of the Cold King refrigeration unit; Blockage above the goods can cause a short circuit in the cold air flow. Maintain a distance of 225 millimeters between the top of the cargo and the roof of the vehicle.

When loading, do not stack the goods too high and ensure that the loading height is not higher than the plane height of the air outlet. If the air outlet is blocked by goods or too close to the goods, it will not only affect the storage and transportation temperature of the goods, but also affect the normal operation of the refrigeration unit. Due to the blockage of the air outlet by goods, the cold air (or hot air) cannot circulate normally in the carriage, resulting in a local increase in temperature of the goods. On the other hand, due to the defrosting design of some refrigeration units, air induction defrosting is used.

When the goods are too close to the air outlet, the coils inside the evaporator of the refrigeration unit will quickly frost (or ice), and the air sensing switch will immediately activate, causing the refrigeration unit to quickly enter the defrosting state; When the temperature of the coil rises to around 9 degrees (design temperature), defrosting immediately ends. So the refrigeration unit will undergo the above-mentioned cyclic operation, resulting in the phenomenon that the temperature inside the compartment cannot be lowered. The only impression given to everyone is that the refrigeration unit always defrosts frequently. It is actually due to the goods being loaded too high (too much).