First of all, you need to calibrate, that is, start up. When the molecular pump is running normally, the vacuum in the mass spectrometry room reaches the green area, add the filament, open the standard leak hole of the gas valve and calibrate. After calibration, we can use it. Zhongke Yike has free training. You can apply for training in Ecotech. Generally 1-2 days, you will be completely OK.