The Shanghai Yetuo in-situ freeze-drying machine is used in fields such as medicine, pharmaceuticals, biological research, chemical engineering, and food. Items that have undergone freeze-drying treatment are easy to store for a long time, and can be restored to their pre freeze-drying state and maintain their original biochemical characteristics after adding water. Changed the tedious operation of the past drying process, prevented material contamination, and achieved automation of drying sublimation. This model has programmable functions, can remember freeze-drying curves, and comes with a USB flash drive extraction function, making it convenient for users to observe the freeze-drying process of materials.

Common faults and solutions of vacuum system in Shanghai Yetuo in-situ freeze dryer:

1: The performance of the vacuum pump has decreased, and the vacuum pump oil has been contaminated. If the oil level drops and emulsification occurs in the freeze-drying machine, the oil volume should be increased immediately or the vacuum pump oil should be replaced, and the cause of contamination should be investigated. If the vacuum pump absorbs a small amount of water, the air damper can be opened for 0.5-1 hours to observe whether the appearance of the vacuum pump oil improves and whether the vacuum degree continues to decrease. If the vacuum pump oil element is significantly improved after multiple replacements, the vacuum pump needs to be inspected.

2: The airtightness of the system has decreased, resulting in leakage. Find the leakage point, and after finding the leakage point, repair the leakage, replace the sealing ring or replace the valve.

The vacuum system mainly consists of vacuum pump, front box, rear box, valves on the box body, mushroom valve, small butterfly valve, vacuum silicon tube and other parts.

Daily maintenance and upkeep of the vacuum system of Shanghai Yetuo in-situ freeze-drying machine:

1) Regularly replace the vacuum pump oil to ensure the performance of the vacuum pump.

2) Before starting the vacuum pump, check if the oil level is normal for the freeze dryer (it should be at around 1/2 of the sight glass position).

3) Before vacuuming the box, it is necessary to ensure that the back box is dry to avoid pumping water vapor into the pump body, which may affect the pumping efficiency of the vacuum pump.

The above is the complete sharing today about the common fault phenomena and solutions of freeze-drying machines. We hope it will be helpful for everyone to use this equipment in the future.