How to maintain a freeze dryer

The vacuum freeze dryer freezes the material below its eutectic point and then sublimates the ice directly into water vapor in a vacuum environment to achieve the purpose of drying. Freeze dryers have become key equipment in many industries, especially in the fields of food, pharmaceuticals and biotechnology.

Maintenance of freeze dryer:

I. Daily maintenance

1. Regular inspection: The freeze dryer should be inspected regularly to see if there are any damaged or loose parts, especially the key parts of the refrigeration system, vacuum system and heating system.

2. Clean the surface: Wipe the outer shell of the freeze dryer with a soft damp cloth, and avoid using corrosive or abrasive cleaning agents to prevent damage to the outer shell.

3. Record operating data: After each use, the operating data of the freeze dryer, such as temperature, vacuum and operating time, should be recorded so that abnormalities can be discovered and handled in time.

II. Special maintenance

1. Vacuum pump maintenance: The vacuum pump is a key component for the freeze dryer to maintain a high vacuum degree. The pump oil should be replaced regularly and the impurities in the pump should be cleaned.

2. Refrigeration system maintenance: The maintenance of the refrigeration system includes checking the pressure and temperature of the refrigerant, cleaning the condenser and evaporator, and checking the sealing of the refrigeration cycle system.

The freeze dryer machine is mainly composed of a refrigeration system, a vacuum system and a control system. The refrigeration system is responsible for freezing the material, the vacuum system creates the environment required for sublimation drying, and the control system is responsible for the automatic operation of the entire machine.