Boot
1 Open the main power switch on the left side of the chassis, the pressure is displayed as atmospheric pressure 110pk;
2 Press and hold the total switch on the control panel for more than three seconds, the temperature is displayed as the actual temperature of the cold trap;
3 Start the refrigerator and pre-cool for more than 30 minutes;
4 Place the sample in the sample holder, cover the plexiglass cover, and activate the vacuum pump;
5 After the gas pressure is stable, record the temperature and pressure values.
Downtime
1 Record the temperature and pressure values ​​before the shutdown;
2 Press and hold the inflation valve on the control panel and immediately turn off the vacuum pump;
3 When the pressure is displayed at atmospheric pressure, open the plexiglass cover and take out the sample;
4 Turn off the refrigerator, press and hold the total switch key for more than three seconds, then turn off the main power switch after the Zui;
5 After the ice in the cold trap is completely turned into water, open the water outlet valve on the left side of the cabinet to drain the water, and clean the inner wall of the cold trap with a dry cloth, and cover the large filter paper to prevent dust.
Precautions
1 Prepare samples to maximize their surface area, which should not contain acid-base substances and volatile organic solvents;
2 The sample must be completely frozen into ice, and if there is residual liquid, it will cause vaporization spray;
3 Note that the cold trap is about minus 65 degrees and can be used in low temperature refrigerators, but must be insulated to prevent frostbite;
4 Before starting the vacuum pump, check whether the water supply valve is tightened, whether the inflation valve is closed, whether the contact surface of the plexiglass cover and the rubber ring is clean and free of dirt, and is well sealed;
5 Under normal circumstances, the machine must not be used continuously for more than 48 hours;
6 During the freezing process, the temperature gradually decreases. After the sample is taken out and warmed for a while (still in the frozen state), the drying is continued to shorten the drying time.
1 Open the main power switch on the left side of the chassis, the pressure is displayed as atmospheric pressure 110pk;
2 Press and hold the total switch on the control panel for more than three seconds, the temperature is displayed as the actual temperature of the cold trap;
3 Start the refrigerator and pre-cool for more than 30 minutes;
4 Place the sample in the sample holder, cover the plexiglass cover, and activate the vacuum pump;
5 After the gas pressure is stable, record the temperature and pressure values.
Downtime
1 Record the temperature and pressure values ​​before the shutdown;
2 Press and hold the inflation valve on the control panel and immediately turn off the vacuum pump;
3 When the pressure is displayed at atmospheric pressure, open the plexiglass cover and take out the sample;
4 Turn off the refrigerator, press and hold the total switch key for more than three seconds, then turn off the main power switch after the Zui;
5 After the ice in the cold trap is completely turned into water, open the water outlet valve on the left side of the cabinet to drain the water, and clean the inner wall of the cold trap with a dry cloth, and cover the large filter paper to prevent dust.
Precautions
1 Prepare samples to maximize their surface area, which should not contain acid-base substances and volatile organic solvents;
2 The sample must be completely frozen into ice, and if there is residual liquid, it will cause vaporization spray;
3 Note that the cold trap is about minus 65 degrees and can be used in low temperature refrigerators, but must be insulated to prevent frostbite;
4 Before starting the vacuum pump, check whether the water supply valve is tightened, whether the inflation valve is closed, whether the contact surface of the plexiglass cover and the rubber ring is clean and free of dirt, and is well sealed;
5 Under normal circumstances, the machine must not be used continuously for more than 48 hours;
6 During the freezing process, the temperature gradually decreases. After the sample is taken out and warmed for a while (still in the frozen state), the drying is continued to shorten the drying time.
Shine Skin Pumpkin Seeds Inshell
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Inner Mongolia Xuanda Food Co., Ltd. , https://www.xuandagroup.com