Cold storage operation maintenance and management methods

Cold storage operation maintenance and management methods

1.Booting and preparation before booting

Before starting up, check whether the valves of the unit are in normal starting state, check whether the cooling water source is sufficient, and set the temperature according to the requirements after the power is turned on. The refrigeration system of the cold storage is generally automatically controlled, but the cooling water pump should be turned on when it is used for the first time, and the compressors should be started one by one after normal operation.

　　 2. Operation management

The following points should be paid attention to after the normal operation of the refrigeration system: First, listen to whether the equipment is running abnormally; second, see whether the temperature in the warehouse drops; third, whether the cold and heat of the suction and exhaust are distinct, and whether the condenser cooling effect is normal .

　　 Three, 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, it is necessary to ventilate frequently during use, and generally should be done in the morning when the temperature is lower. In addition, the evaporator 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 collection in the storage and use a broom to clean the frost.

　　 1. For the evaporator of the air-cooled machine: always check the defrosting situation, whether the defrosting is effective in time, will affect the refrigeration effect and cause the liquid back of the refrigeration system.

　　2. Frequently observe the compressor'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 condensation temperature in time.

　　3. Running the unit: 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, solve it in time to avoid poor lubrication.

　　4. Listen carefully to the running sound of the compressor, cooling tower, water pump or condenser fan, and deal with any abnormalities in time. At the same time, check the vibration of the compressor, exhaust pipe and foot.

　　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 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 after half a year of operation, depending on the situation in the future.

　　6. ​​Running the unit: 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, solve it in time to avoid poor lubrication.

　　7. For air-cooled units: clean the air cooler frequently to keep it in a good heat exchange state. For water-cooled units: Check the turbidity of the cooling water frequently. If the cooling water is too dirty, replace it. Check the water supply system for bubbles, bubbles, drips and leaks. Whether the water pump works normally, whether the valve switch is effective, whether the cooling tower fan is normal. For the air cooler unit: Check the condenser frequently for scaling problems, and remove the scale in time.

　　 8. For air-cooled units: often clean the air cooler to maintain a good heat exchange state. For water-cooled units: Check the turbidity of the cooling water frequently. If the cooling water is too dirty, replace it. Check the water supply system for bubbles, bubbles, drips and leaks. Whether the water pump works normally, whether the valve switch is effective, whether the cooling tower fan is normal. For the chiller unit: Check the condenser frequently for scaling problems, and remove the scale in time.

　　 9. For the evaporator of the air-cooled machine: always check the defrosting situation, whether the defrosting is effective in time, will affect the refrigeration effect and cause the liquid back of the refrigeration system.

　　10. Frequently observe the compressor'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 condensation temperature in time.

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

　　12. 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 should be replaced after half a year of operation, depending on the situation in the future.