Host schematic

Before lyophilization, the items to be dried are placed in a low-temperature refrigerator or liquid nitrogen to freeze the contents completely before freezing.

The main unit and the vacuum pump are connected by a vacuum tube, and the joint is equipped with an international standard clamp. The clamp contains a sealing rubber ring. Before connecting, apply a proper amount of vacuum grease on the rubber ring and then clamp it with a clamp.

The power supply socket of the vacuum pump is installed on the right side of the main unit, and the power line of the vacuum pump is connected.

Check the vacuum pump to confirm that the vacuum pump oil has been filled and that it is not oil-free. The oil level must not be lower than the center line of the oil mirror. Please read the instruction manual of the vacuum pump before using it for the first time.

The “O” type sealing rubber ring above the main cold trap should be cleaned. When using it for the first time, apply a thin layer of vacuum grease. Place the plexiglass cover on the rubber ring and gently rotate it a few times to facilitate sealing. .

A , boot operation

1. Connect the main power cord and turn on the yellow main power switch on the right. At this point, the "cold trap temperature" display window begins to display the temperature of the cold trap;

2. Press the “refrigerator” switch, the chiller starts to run, and the temperature of the cold trap gradually decreases. In order to make the cold trap and have sufficient ability to adsorb moisture, the pre-cooling time should be no less than 30 minutes;

3. Press the “vacuum gauge” switch, and the vacuum degree is displayed as “999”;

4. After the pre-cooling is finished, place the prepared items to be dried in a drying tray, and then cover the plexiglass cylinder.

5. Press the stainless steel tab on the quick inflation valve (located on the right front panel). After you hear the click, pull out the quick inflation valve connector to seal it automatically.

6. Press the “vacuum pump” switch, the vacuum pump will start working, and the vacuum will display “999” until 1000Pa or less to display the actual vacuum. The freeze-drying process begins.

Note: When the vacuum pump starts working, press down on the plexiglass cover for a while, which is good for sealing.

7. Multi-manifold type should first close the rubber valve (put the valve core up). When the vacuum reaches 20Pa or less, insert the freeze-dried bottle that has been pre-frozen into the lower interface of the rubber valve and rotate the plastic valve core down 180. °. (Note: At this time, the vacuum display will rise, and the next bottle should be installed when the vacuum reaches 20Pa or less).

8. T-frame type Firstly, the rubber valve should be closed (the valve core is vertical rubber tube). When the vacuum degree reaches 20Pa or less, the freeze-dried bottle that has been pre-frozen is inserted into the lower interface of the rubber valve, and the plastic valve core is rotated by 90°. (Note: At this time, the vacuum display will rise, and the next bottle should be installed when the vacuum reaches 20Pa or less).

B , shutdown operation

1. Insert the quick inflation valve connector into the quick inflation valve seat, and turn off the “vacuum pump” power switch to make the air slowly enter the cold trap; if it needs to be filled with inert gas, connect the decompression catheter of the inert gas to the “inflator port”. .

2. Turn off the “vacuum meter” and “refrigerator”. If you do not need to unplug the power cord for a long time.

3. Lift the plexiglass cover, remove and store the items, and the freeze-drying process is over.

4. After the ice in the cold trap is turned into water, the water needs to be discharged from the outlet of the fast inflation valve. The operation is similar to the inflation.

5. Clean up the water and impurities in the cold trap and properly maintain the equipment.

When the vacuum pump is not in use, the exhaust nozzle should be covered to prevent dirt from entering.

6, multi-manifold type, should close the rubber valve one by one and remove the freeze-dried bottle and then repeat the shutdown operation.

Ear Health Care ( Invisible )

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