Precautions for the Assembly of Industrial Duct Fans

Precautions for the Assembly of Industrial Duct Fans

Generally speaking, manufacturers adhere to strict quality standards when producing industrial duct fans to ensure outstanding performance. However, in addition to rigorous quality control during the manufacturing process, the assembly stage is also a critical phase, as the quality of assembly can have a significant impact on the performance of the industrial duct fan. Therefore, it is essential to approach the assembly of industrial duct fans with due care and to follow established standards. Typically, during assembly, the unit must first be placed on the base, then levelled using diagonal shims. When assembling on-site, care must be taken to avoid adverse effects such as corrosion, whilst also providing appropriate protection for the machined surfaces of the base. When positioning the unit on the base, please ensure it is aligned correctly. Following assembly, it is essential to ensure that the bearing housing is tightly fitted to the base of the industrial duct fan. Generally, longitudinal runout should be controlled within 0.2/1000, and transverse runout within 0.3/1000. Furthermore, to meet the specifications, the rotor shaft and housing shaft must be aligned before machining the bearing sleeves. Additionally, when assembling the housing, personnel should first locate the reference plate based on the rotor shaft before determining the housing’s position. Furthermore, the axial alignment between the impeller inlet and the casing inlet must be set within the specified tolerance. After installation, please ensure that the connecting bolts are securely tightened. At the same time, to improve the operational efficiency of the industrial duct fan, please ensure that the axial clearance is adjusted to the appropriate position. The above content briefly outlines several key points to note when assembling an industrial duct fan. It is hoped that this introduction will facilitate a better understanding of this subject matter and enable more effective utilisation of industrial duct fans.