The service life of Chongqing refrigerated trucks is closely related to the daily maintenance and upkeep of the vehicles and refrigeration units. The chassis engine is usually maintained and serviced according to the mileage, while the refrigeration unit is maintained and serviced according to the engine working hours.

The care of the refrigerated truck chassis is very important. When maintaining the chassis, it should be cleaned. If there is too much mud and dirt on the chassis, it should be washed with a degreasing cleaner first to expose the original "color" of the chassis, and then rust prevention care can begin.

Lift the refrigerated truck onto the lifting frame for chassis cleaning and wiping. It is important to note that after cleaning, wait until the moisture on the chassis is completely dry before carrying out rust prevention care. When carrying out care, it is necessary to maintain a uniform spray coating to form a long-term, uniform anti rust coating.

After completion, natural air drying should be carried out for 5-10 minutes to complete the chassis rust prevention treatment. Use non alkaline cleaning agents and laundry detergent to rinse the body and chassis during cleaning, otherwise it will affect the rust prevention effect and shorten the rust prevention time. It should also be noted that the chassis that has undergone rust prevention care should not have water droplets after high-pressure water spraying to achieve the effect of rust prevention protection.

When the refrigeration machine runs for 500-700 hours, maintenance and upkeep are required. The oil filter, fuel filter, and air filter should be replaced, and attention should be paid to checking the tightness of the belt and whether there are leaks in the refrigeration system.

Refrigeration equipment is an important component of refrigerated trucks. The refrigeration equipment of refrigerated trucks is prone to malfunction during use and requires regular inspection and maintenance to ensure its reliability and extend its service life.

The specific operation items are as follows: check for looseness, cracks, and damage in all fasteners, and repair or replace them in a timely manner if any are found; Check the tightness and wear of the V-belt of the transmission components, and whether there is looseness and abnormal noise in the transmission shaft and bearings

Check for any damage to the pipeline and oil stains on the pipe joints. If oil stains are found, use soapy water to detect them. The majority of the interface points with oil stains are leakage points. After identifying the leakage points, they should be repaired

Check and clean the dust and dirt on the condenser fins, and remove the dust on the windward side of the inlet to ensure smooth air flow; Check for debris and dust blockage on the evaporator fins and clean them, defrost them in a timely manner, and ensure that the frost layer on the evaporator surface is not too thick.

Check if there is any looseness in the assembly components of the compressor, if there is any air leakage in each part, and check the high and low pressure values; Check if the expansion valve is working properly and if there are any blockages caused by dirt. If there are any, clean it; Check the dryer and clean or replace it.

Check the operation of the fan and adjust the tightness; Check the refrigerant quantity through the glass flap inspection hole. If the refrigerant is insufficient, it should be replenished. If there is air in the refrigeration system, technical treatment should be carried out.

The maintenance interval for refrigerated truck air conditioning is usually one year, and it can also be maintained at any time as needed. The air conditioning systems used in refrigerated trucks nowadays are generally single cooling open type, with Freon as the refrigerant.

By observing the inspection window, it is possible to determine whether the refrigerant is leaking. The method is to start the engine, turn on the cooling switch, set the temperature switch to the "cold" position, and turn on the fan switch.

If no bubbles are visible, it indicates a refrigerant leak. Also, observe the operating frequency of the air conditioning compressor. If it is faster than before, it may be due to insufficient fluorine. You can also go to a fluorine repair shop to test the high and low pressure of the air conditioner. If it is high, determine whether fluorine needs to be replenished. Air conditioning systems are generally equipped with circulating ventilation filtration devices and refrigerant storage dryers, so it is important to remember to clean and regularly replace them during maintenance.

The maintenance interval for refrigerated truck air conditioning is usually one year, and it can also be maintained at any time as needed. The air conditioning systems used in refrigerated trucks nowadays are generally single cooling open type, with Freon as the refrigerant.

By observing the inspection window, it is possible to determine whether the refrigerant is leaking. The method is to start the engine, turn on the cooling switch, set the temperature switch to the "cold" position, and turn on the fan switch. If no bubbles are visible, it indicates a refrigerant leak.

Also, observe the operating frequency of the air conditioning compressor. If it is faster than before, it may be due to insufficient fluorine. You can also go to a fluorine repair shop to test the high and low pressure of the air conditioner. If it is high, determine whether fluorine needs to be replenished. Air conditioning systems are generally equipped with circulating ventilation filtration devices and refrigerant storage dryers, so it is important to remember to clean and regularly replace them during maintenance.