Step 1. Add appropriate amount of water to the outer pot, put the items to be sterilized into the inner pot, cover the pot and tighten the screw symmetrically.

Step 2. Heating causes steam to be generated in the pot. When the pressure gauge pointer reaches 33.78kPa, open the exhaust valve to discharge the cold air. At this time, the pressure gauge pointer drops. When the pointer drops to zero, close the exhaust valve.

Step 3. Continue heating, the steam in the pot increases, and the pointer of the pressure gauge rises again. When the pressure in the pot increases to the required pressure, the firepower is reduced. According to the characteristics of the sterilized items, the steam pressure can be maintained at the required pressure for a certain period of time , And then cut off the power or fire of the sterilizer, let it cool naturally, and then slowly open the exhaust valve to remove the remaining air, and then open the lid to take the material.