1. Initial operation unit of cold storage equipment: The initial operation unit of cold storage equipment should often observe the oil level and oil return of the compressor and the cleanliness of the oil, and solve the problem in time if the oil is dirty or the oil level is declining, so as not to cause poor lubrication.
2. Frequently observe the operating status of the heart compressor of the cold storage equipment: check its exhaust temperature, pay special attention to the operating status of the system during the operation of the season, and adjust the liquid supply and condensation temperature of the system in time.
3. If it does not start for a long time or does not stop for a long time or the warehouse temperature is not stopped, it will be stopped.
4. Usually, the operating status of the compressor should be observed by observing the change of the instrument, listening to the sound of the machine running, touching the temperature change of the machine, etc. If it is found that the compressor has crossgas, etc., it should be repaired or replaced in time.
5. Cold storage has large cooling loss due to poor heat insulation or sealing performance.
6. The frost on the surface of the evaporator in the cold storage is too thick or the dust accumulates too much, and the heat transfer effect decreases to prevent the surface frost layer of the evaporator from being too thick, and it needs to be defrosted regularly. In addition to the poor heat transfer effect of the evaporator due to excessive frost formation, the dust accumulation on the surface of the evaporator due to long-term uncleaned dust is too thick, and its heat transfer efficiency will also be significantly reduced.
7. There is more air or refrigeration oil in the evaporator, and the heat transfer effect is reduced
8. The throttle valve of the cold storage is improperly adjusted or blocked, and the refrigerant flow is too large or too small
9. The refrigerant dose in the cold storage system is insufficient and the refrigeration capacity is insufficient
10. The compressor efficiency is low, and the cooling capacity cannot meet the load requirements of the warehouse
