In terms of traditional drying methods, there are generally drying, boiling, drying, spray drying and vacuum drying. However, the resulting product will lose most of its volatile parts due to drying, and there are great differences in properties. Currently, freeze dryers are widely used in many food and pharmaceutical industries. The birth of this product is to remove moisture or other moisture in the material, use low temperature to make the moisture or moisture in the material form ice crystals, and then sublimate to remove the water or other moisture in it. Reading the notes on the freeze dryer is necessary to operate the instrument.
1. The vacuum pump and the host are connected by a vacuum pressure tube, and the two ends are equipped with standard quick clamps. The clamps are equipped with a rubber seal ring. Before connecting, apply a proper amount of vacuum grease on the seal ring, and then clamp the two end clamps. tight.
2. A "total power" socket is installed above the right side panel of the main unit. Plug one end of the power cord and connect the other end to a live power source. A vacuum pump power socket is additionally installed on the side of the "total power supply", and the power cord of the vacuum pump can be plugged in.
3. Please read the "Instruction Manual" of the vacuum pump in detail, check the vacuum pump, and confirm that the vacuum pump oil has been filled, do not run without oil, and the oil level should not be lower than the center line of the oil mirror.
4. The "○" type sealing ring above the cold trap should be kept clean, and a layer of vacuum grease can be applied evenly before use.
5. Put the material into the material tray, put the material tray on the pre-freezing rack, put the pre-freezing rack into the cold trap, cover with the insulation cover, and pre-freeze for 4 ~ 6 hours.
6. If the capping configuration is selected, the material is injected into the vial, and then the vial is placed in a cold trap, pre-frozen for 4 to 6 hours, and after pre-freezing, the vial is placed in the capped material tray for drying.
7. If a multi-manifold configuration is selected, the material is poured into the selected drying bottle, and then the drying bottle is placed in a cold trap, covered with a heat preservation cover, and pre-frozen for 4 to 6 hours. If possible, it is best to put the drying bottle Pre-freeze while rotating, so that the material can be frozen on the bottle wall evenly, which is beneficial to accelerate the drying effect.
8. Press and hold the "Total Power" button on the control panel for three seconds to power on the control system. At this time, the temperature window displays the temperature of the cold trap coil at that time.
9. Press the "Refrigerator" button, the refrigeration system starts to work, the number of the cold trap temperature display window drops rapidly, and pre-freezing begins.
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