1.The steam can't go through to chamber when the door haven't close,and the pilot off inform. You can processing dry operate
2.When the pressure inner over 0.027MPa,the door shoule be locked and can't be open
3.If you not choose the sterilzing time and star the machine ,buzzer sound
4.If you mistake open the door in the course of start,the jacker value auto off and open the chamber value
5.Lack water the pilot on, heating and sterilize pilot off, the buzzer sound and auto release steam
6.Overload and leakage protection,when laekage or over current occur,it auto off the power.
7.Temperature controlled not work and the inner pressure over 0.165MPa,the safety value auto start open