Correct operation of vacuum drying oven

In the daily operation of the vacuum drying oven, some maintenance matters need to be done well first In the operation, the instructions for each vacuum drying oven are mostly different In some operations, it is particularly important for the setting of the opening and closing of the oven door and the setting of the temperature For example, after the vacuum is removed, it is not easy to open the oven door immediately if the sealing ring and the glass door are tight and deformed After a period of time, it will be equally tight After the seal ring is restored to its original shape, the box door can be opened conveniently When the required working temperature is low, the secondary setting method can be used For example, if the required temperature is 60 ℃, 50 ℃ can be set for * times, and then 60 ℃ can be set for the second time after the temperature overshoot starts to fall back In this way, the temperature overshoot phenomenon can be reduced or even eliminated, and the constant temperature state can be entered as soon as possible Connect the air guide pipe behind the vacuum drying oven with the vacuum pump with the rubber pipe, connect the power supply of the vacuum pump and start pumping When the index value of the empty meter reaches 0.1M PA, close the vacuum valve, and then close the power switch of the vacuum pump Put the articles to be dried into the vacuum drying box, close the box door, close the vent valve and open the vacuum valve Select different drying time according to the humidity degree of different articles If the drying time is long and the vacuum degree drops, it is necessary to pump air again to restore the vacuum degree First, turn on the power switch of the vacuum pump, and then turn on the vacuum valve After drying, first close the power supply of the drying box, open the vent valve, release the vacuum state in the box, and then open the door to take out the articles Turn the power switch of the vacuum drying oven to the "on" position, select the required set temperature, and the temperature in the oven starts to rise When the temperature in the oven is close to the set temperature, the heating indicator light will turn on and off repeatedly Generally, the shelf layer can enter the constant temperature state within 120 minutes