Cold room is actually a low-temperature freezing equipment, freezing temperature is generally between minus 10 degrees to minus 30 degrees, the amount of frozen food storage is relatively large. Cold storage, also called refrigerated storage, also belongs to a kind of refrigeration equipment compared with the refrigerator, its refrigeration area is much larger, but they have a similar refrigeration principle. Summer is coming, the use of cold storage use more common, such as attention: peaches, kiwis, cherries air conditioning cold storage temperature and parameters; in the daily use of cold storage, you pay attention to the maintenance of cold storage equipment did not? Basically, the cold storage is put into use from the time it is built, and the continuous operation will inevitably lead to the aging of the equipment. Therefore, in the daily use of cold storage equipment maintenance of cold storage work to do a good job. The maintenance of cold storage equipment can not only effectively extend the service life of the relevant equipment, reduce the energy consumption of cold storage operation, but also effectively avoid sudden failures in the use of cold storage.
Cold storage for the first time or a long period of downtime, the warehouse is strictly prohibited from stacking goods, the warehouse must be slowly reduced to the required temperature, for low-temperature library need to be phased in 24 hours to reduce the temperature, to avoid sudden changes in the temperature difference between inside and outside the library, resulting in the destruction of the library body. When it is opened, it should be kept at 0℃ for a period of time, and then slowly cool down, and the temperature should be controlled at -8℃～-10℃ every day.
Cold storage routine maintenance and maintenance and refrigeration system in operation how to maintain.
1, the initial operation of the unit: to frequently observe the oil level and oil return of the compressor and the oil of the degree of cross-examination, found that the oil is dirty or the oil level drops to solve in time, so as not to cause poor lubrication.
2、For the air-cooled unit: the air cooler should be cleaned frequently to maintain a good heat exchange state. For water-cooled units: check the turbidity of cooling water frequently, and replace it if it is too dirty. Check whether the water supply system is running, bubbling, dripping and leaking. Whether the water pump works normally, whether the valve switch is effective, and whether the cooling tower. Whether the fan is normal. For the air-cooling unit: check the condenser frequently for scaling problems, and scale it in time.
3, for the air-cooled machine type evaporator: often check the defrost situation, whether the defrost is timely and effective, will affect the cooling effect, resulting in the refrigeration system back to the liquid.
4, often observe the operating status of the compressor, check its exhaust temperature, in the seasonal operation, pay special attention to the operating status of the system, timely adjustment of the liquid supply and condensing temperature of the system.
Post time: May-08-2023