In order to ensure the quality of installation and improve the efficiency of installation work, Changsha Roots Blower needs to do all the preparatory work before installation. First, first of all, before installing the Roots blower need to familiarize with the installation drawings, information, instructions and other technical documents. Need to be in accordance with the specifications and dimensions of the drawings one by one, according to the design drawings to check the specifications of the ventilator, the form, the direction of rotation of the blade or rotor, the power requirements of the prime mover, the center distance of the ground bolt holes, the inlet and outlet flange aperture and orientation and the center distance, the center of the spindle elevation and so on whether it is in line with the design requirements. Secondly, it is necessary to count whether the parts and accessories of the product are complete according to the delivery list of the manufacturer, and check whether the fan and the blower have any wear and tear or deformation and scars, etc. Third, the problems checked, including design, machine and construction problems, should be solved immediately, otherwise the installation work cannot be carried out. Fourth, it is necessary to pay attention to the inspection project to be completed with the supplier, or self-checked in a timely manner with the supplier in a timely manner, there are problems with the project needs to be registered in a timely manner, by a person responsible for the custody.