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    Home > Active Ingredient News > Drugs Articles > Check the operation steps before the operation of the four-ring freeze-drying vacuum freeze-drying machine

    Check the operation steps before the operation of the four-ring freeze-drying vacuum freeze-drying machine

    • Last Update: 2022-05-03
    • Source: Internet
    • Author: User
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      The four-ring freeze-drying vacuum freeze-drying machine is characterized in that the products are generally completed on a set of shelves in the same drying box to complete the whole process of pre-freezing, heat preservation, sublimation and drying
    .

    The trays on the shelves are made of stainless steel, which will be deformed by thermal expansion and contraction during freeze-drying for a long time, so it takes a lot of manpower and financial resources, such as from the flatness of the shelf surface, the position of the surface plug welding point , thermal expansion and contraction caused by intermittent welding, materials and other problems, all kinds of problems will directly affect the thermal conductivity between the shelf to the product and the tray, and the cause of uneven temperature may be.
    Therefore, there are some reflections in the freeze-dried vial The residual water content is inconsistent, and some are quite different, and the residual water content standard of the product design is not reached

    .

    Freeze-dried vials use drawer-type tray frames or bulk vials, which is a waste of time for loading and unloading, and easy to break when loading and unloading vials.
    Now sterile film-formed trays have been used, but they are expensive, easy to damage, Defects such as not using for a long time

    .

     Four-ring freeze-drying vacuum freeze-drying machine operation steps 1.
    Power on the freeze-drying machine, open the side door of the fuselage and check whether the air switch of the circuit board is closed

    .

    2.
    Check whether the value of the pressure gauge is normal 3.
    Check whether the oil level of the vacuum pump and the quality of the pump oil are normal 4.
    Check whether the oil level of the hydraulic pump and the quality of the pump oil are normal and whether the vacuum degree value is normal

    .

    6.
    Click the monitor button to check whether each component has overload tripping phenomenon

    .

    Green indicates that the alarm state is normal, and red indicates that the component does not operate under the condition of no operation, which is regarded as normal.
    Only after the component is activated, the corresponding red light will change to green

    .

       
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