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Selection And Maintenance Of Yingtai Freeze Dryer Vacuum Pumps

Views: 251     Author: Site Editor     Publish Time: 2024-07-05      Origin: Site

Selection And Maintenance Of Yingtai Freeze Dryer Vacuum Pumps

Yingtai Freeze dryer vacuum pumps are widely used in fields such as biopharmaceuticals, food processing, and chemicals. In biopharmaceuticals, freeze-drying technology is extensively applied in the preparation of vaccines and biological products. In food processing, it is used for making convenience foods and dehydrated vegetables. In the chemical industry, freeze-drying technology is utilized for producing high-purity chemicals.


When choosing a freeze dryer vacuum pump, the following factors should be considered:

1. Vacuum Requirements

  Different freeze-drying processes have different vacuum requirements (especially for pilot and R&D freeze dryers). Therefore, it is essential to select a suitable vacuum pump based on the specific freeze-drying process.

2. Pumping Speed

  The pumping speed refers to the volume of gas that the vacuum pump can extract per unit of time. The appropriate pumping speed should be chosen based on the size of the freeze-drying chamber and the number of samples.

3. Operational Stability

  Since the freeze-drying process requires long-term operation, it is necessary to choose a vacuum pump with stable performance and low failure rates.

4. Maintenance Costs  

  Different types of vacuum pumps have varying maintenance costs. Selecting a suitable vacuum pump based on actual conditions can help reduce maintenance expenses.


Regular maintenance is essential to ensure the normal operation of the freeze dryer vacuum pump and to extend its service life.

Checking Pump Oil

1. Oil Level Check  

  During operation, the pump oil level should always be maintained within the MAX to MIN range on the oil gauge. If the oil level is below the MIN mark, oil should be added promptly. If the oil level exceeds the MAX mark, the excess oil should be drained by unscrewing the oil drain plug.

2. Quality Check  

  Observe the color of the pump oil. Normal pump oil should be clean and transparent. If the oil becomes dark or cloudy, it needs to be replaced.

Oil Change

1. If the pump ingests a large amount of water, organic solvents, or corrosive gases, the oil should be changed promptly.

2. The vacuum level of the pump decreases over time with usage, necessitating timely oil changes.

3. For new pumps, the first oil change is recommended after 100 hours of operation.

4. If the pump operates for extended periods at pressures higher than 10,000 Pa, oil consumption increases, and the oil should be replenished in a timely manner.

5. When pumping clean gases at low pressure, it is recommended to change the oil approximately every 2,000 hours.

Regular Inspection

Additionally, it is important to regularly check whether any parts of the vacuum pump are loose or damaged, and to tighten or replace them as necessary.

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