3. Check whether the hot and cold of the exhaust and suction are distinct, and whether the cooling effect of the condenser is normal.

Ventilation and defrost
Fruits and vegetables will release some gas during storage, and accumulation to a certain extent will cause physiological disorders of the collection, deterioration of quality and taste. Therefore, frequent ventilation is required during use, and generally should be done in the morning when the temperature is lower. In addition, the cooler units will form a layer of frost after the cold storage is used for a period of time. If it is not removed in time, it will affect the cooling effect. When defrosting, cover the storage in the storage and use a broom to clean the frost. Be careful not to hit hard.

1. For the evaporator of the cooler units: always check the defrosting situation and whether the defrosting is effective in time, which will affect the refrigeration effect and cause liquid back in the refrigeration system.
2. Frequently observe the cold room unit's operating status and check its exhaust temperature. During seasonal operation, pay special attention to the system's operating status, and adjust the system's liquid supply and condensing temperature in time.

3. Operation of the cold room condensing units: always observe the oil level and return of the compressor and the cleanliness of the oil. If the oil is dirty or the oil level drops, it should be solved in time to avoid poor lubrication.

4. Listen carefully to the operating sound of the cooler units, cooling tower, water pump or condenser f an, and deal with any abnormalities in time. At the same time, check the vibration of the compressor, exhaust pipe and footing.

5. Maintenance of the compressor: The internal cleanliness of the system is poor at the initial stage. The refrigerating oil and filter drier should be replaced after 30 days of operation, and then replaced again after half a year of operation (depending on the actual situation). For systems with higher cleanliness, the refrigerating oil and filter drier must be replaced once after half a year of operation, depending on the situation in the future.

8. For the evaporator of the cooler units: always check the defrosting situation and whether the defrosting is effective in time, which will affect the refrigeration effect and cause liquid back in the refrigeration system.

The above information is summarized and compiled by the engineers of KITDOO Refrigeration Company. KITDOO provides customers with professional one-stop cold chain optimization services.