Operation method of vacuum drying box: 1. Put the items to be dried into the vacuum drying box, close the door, close the vent valve, open the vacuum valve, connect the power of the vacuum pump and start pumping, so that the vacuum degree in the box reaches- When 0.1M Pa, close the vacuum valve, and then turn off the power of the vacuum pump. 2. Turn the power switch of the vacuum drying box to "On" and select the desired set temperature. The temperature in the box starts to rise. When the temperature in the box is close to the set temperature, the heating indicator light will suddenly turn off and repeat many times. , Generally within 120min can enter the constant temperature state. 3. When the required working temperature is low, the second setting method can be used. For example, if the required temperature is 60 ℃, the first time can be set to 50 ℃. When the temperature overshoot starts to fall back, then set the second time to 60 ℃. This can reduce or even eliminate the phenomenon of temperature overshoot and enter the constant temperature state as soon as possible. 4. Choose different drying time according to the humidity of different items. If the drying time is longer and the vacuum drops, you need to pump down again to restore the vacuum. You should first turn on the power of the vacuum pump and then open the vacuum valve. 5. After the drying is completed, the power supply of the drying cabinet should be turned off, the air release valve should be opened to release the vacuum in the cabinet, and then the door should be opened to take out the items. (After the vacuum is lifted, if the sealing ring and the glass door are tightly deformed, it is difficult to open the box door immediately. After a period of time, the box door can be opened conveniently after the sealing ring returns to its original shape.
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