Power

 1 to open the case on the left of the main power switch, digital pressure is atmospheric pressure 110pk;

 2 Hold down the control key to open the panel on the total for more than three seconds, temperature display of actual temperature of the cold trap;

 3 start chillers, pre-cooling over 30 minutes;

 4 Place the sample in the sample holder, covered with organic glass, and start the vacuum pump;

 5 digital pressure to be stable, record the temperature and pressure values.

 Downtime

 1 record down the value before the temperature and pressure;

 2 Hold down the control panel of the inflation valve, and immediately close the vacuum pump;

 3 digital pressure is atmospheric pressure, open the organic glass, remove the sample;

 4 Close the refrigerator, always hold the key to open more than three seconds, and finally off the main power switch;

 5 so full of ice cold trap into the water, open the drain valve out of the left side of the chassis, and the cold trap with a dry cloth to clean the walls, large sheet of filter paper covered with dust.