1. The installation of the centrifugal fan unit should be directly placed on the foundation and leveled with pairs of inclined shim irons.
2. For centrifugal fans assembled on site, the cutting surface on the base should be properly protected, and there should be no rust or manipulation. When the base is placed on the foundation, it should be leveled with a pair of inclined shim irons.
3. The bearing seat and the base should be closely connected. The longitudinal unlevelness should not exceed 0.2/1000. Use a level to measure on the main shaft, and the horizontal unlevel bottom should not exceed 0.3/1000. Use a level on the horizontal center of the bearing seat. measuring.
4. The rotor axis line and the casing axis line should be calibrated before the bearing bush is scraped, and the gap between the impeller and the air inlet and the gap between the main shaft and the shaft hole on the rear side of the casing should be adjusted to make it in line with the equipment technology. Document regulations.
5. When the main shaft and the bearing bush are assembled, they should be inspected according to the equipment technical documents. The interference between the bearing cap and the bearing shell should be 0.03 to 0.04 mm (measure the outer diameter of the bearing shell and the inner diameter of the bearing seat).