1. The fuel, diesel, or gasoline supply for Chongqing refrigerated trucks should be sufficient to ensure that the engine runs at least until the next checkpoint.

2. The oil level supply of the refrigerated truck manufacturer is at the marked location. Don't pretend too much.

3. Check the coolant level gauge of the refrigerator car 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, and protection should be provided to prevent freezing at -34 ℃.

4. The terminals of the refrigerated truck battery should be firm and free of corrosion. The electrolyte should be at full scale.

5. The belt should be in good condition and adjusted to the appropriate tightness. The center of the span between the pulleys droops 13mm.

6. Check all electrical connectors in the electrical control circuit to ensure they are securely fixed. Wires and terminals should be free from corrosion, combustion, cracking, or moisture.

7. Visually inspect the structure of the device 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.