The freeze dryer turn-on and shutdown steps have those

Freeze dryer boot: (1) Turn on the total power switch on the left side of the case, and the air pressure number is displayed as atmospheric pressure 110pk; (2) Press and hold the total on key on the control panel for more than three seconds, and the temperature number is displayed as the actual temperature of the cold trap; (3) Start the refrigerator and pre-cool for more than 30 minutes; (4) Put the sample into the sample holder, cover the plexiglass cover, and start the vacuum pump; (5) After the air pressure number is stable, record the temperature and air pressure values
.
Freeze dryer shutdown: (1) Record the temperature and air pressure values before stopping; (2) Press and hold the inflation valve of the control panel and close the vacuum pump immediately; (3) When the air pressure number is displayed as atmospheric pressure, open the plexiglass cover and take out the sample; (4) Turn off the refrigerator, press and hold the total on key for more than three seconds, and then turn off the main power switch; (5) After the ice in the cold trap turns into water, open the outlet valve on the left side of the chassis to release water, clean the inner wall of the cold trap with a dry cloth, and cover it with a large sheet of filter paper to prevent dust
.