The types of refrigerated trucks: The refrigerated trucks are all painted with letters A, B, C, D, E, F, H, G, etc. These eight letters represent the eight refrigeration levels of the
Refrigerated Truck. According to the different transported items, choose the appropriate level of refrigerated truck.
The purpose of refrigerated trucks:
1. Transport fresh and cold food to ensure its freshness.
2. Transport special drugs to ensure their efficacy.
3. Transport cold drinks to ensure they do not melt.
4. Transport items that require preservation, achieving short-term preservation and quality preservation.
When the outdoor environment is 30 degrees Celsius, for refrigerated trucks transporting perishable food: When the ambient temperature is 30 ° C, according to the temperature range maintained by the average temperature inside the refrigerated truck compartment, it is divided into the following six categories:
The average temperature of A-class carriages is between 12 ° C and 0 ° C
The average temperature of B-class carriages is between 12 ° C and -10 ° C
The average temperature of C-class carriages is between 12 ° C and -20 ° C
The average temperature of D-class carriages is ≤ 0 ° C
The average temperature of E-Class carriages is ≤ -10 ° C
The average temperature of the F-class carriage is ≤ -20 ° C
As a special type of vehicle, refrigerated trucks must pay attention to some precautions before driving to prevent unnecessary trouble. Before loading goods and driving, it is recommended to conduct the following inspections: 1. The fuel, diesel or gasoline supply of refrigerated trucks must be sufficient to ensure that the engine runs to at least the next checkpoint.
2. The engine oil supply for refrigerated trucks should be at the (full) mark, and do not overfill (replace once a year).
3. Check the coolant level gauge of the refrigerated truck to see if the coolant level is correct, and the pointer should be within the white range. If the coolant level is within the red range, add coolant to the coolant tank. Usually, the coolant is a mixture of ethylene glycol and water (in different proportions depending on the actual usage of the product), and protection should be provided to prevent freezing at -34 ℃. Attention: Do not open the lid of the coolant tank when the coolant is hot.
4. The wiring terminals of the refrigerated vehicle battery must be firm and free of corrosion. The electrolyte should be at the full mark.
5. The belt must be kind and adjusted to the appropriate tightness. A sag of 13mm at the center of the span between the pulleys.
6. Electrical inspection: Check all electrical connectors in the electrical control circuit to ensure they are securely fixed. The wires and terminals should be free of corrosion, burning, cracking, or moisture.
7. Visually inspect the unit for leaks, loose or broken parts, and other damages.
8. The installation gasket of the gasket unit should be firmly pressed and in good condition.
9. The condenser and evaporator coils of the refrigerated truck should be clean and free of dirt.
10. Check the defrost drainage device to ensure that the defrost drainage hoses and fittings are unobstructed.
