Clean room centrifugal fan installation and constant pressure devices

- Mar 01, 2018-

Clean room centrifugal fan in use is essentially a variable flow constant pressure device, when the speed is constant, the centrifugal fan pressure and flow theory curve should be in a straight line, clean room centrifugal fan pressure generated by its Intake air temperature or the impact of changes in density is relatively large.

Clean room centrifugal fan installation matters

1. Clean room centrifugal fan unit in the process of installation, should be placed directly on the basis of a pair of oblique horn leveling.

2. On-site assembly of centrifugal fan, the base of the cutting surface should be properly protected, there should be no rust or operation, the base is placed on the basis of the application of a pair of oblique horn leveling.

3. The bearing seat and the base should be closely engaged, the longitudinal non-horizontal degree should not exceed 0.2 / 1000, measured by the spirit level on the spindle, the horizontal non-horizontal bottom should not exceed 0.3 / 1000, with the level instrument in the level of the bearing surface measuring.

4 bearing scraping scraping should be effective before the first axis of the rotor shaft and the axis of the cabinet to be calibrated in the use of effective adjustment of the impeller and the gap between the inlet and the spindle and the rear plate shaft hole Clearance to make it comply with the provisions of equipment technical documents.

5. Clean room centrifugal fan shaft and spindle assembly, it should be in accordance with the provisions of the technical documents for equipment inspection, bearing cap and bearing should maintain 0.03 ~ 0.04 mm between the interference.