Centrifugal fan installation
1.Centrifugal fan of the overall unit installation, should be placed directly on the basis of pairs of oblique horn leveling.
2.On-site assembly of the centrifugal fan, the base of the cutting surface should be properly protected, there should be no corrosion or operation, the base placed on the basis of the application of pairs of oblique horn leveling.
3.The bearing seat and the base should be tightly engaged, the vertical non-level should not exceed 0.2 / 1000, with the level on the spindle measurement, horizontal horizontal water should not exceed 0.3 / 1000, with the level of the bearing in the level of the sub-surface measuring.
4.Before the bearing grinding, the rotor axis should be corrected with the axis of the chassis, and the gap between the impeller and the inlet and the clearance between the spindle and the rear side of the housing should be adjusted to match the equipment technology The provisions of the document.
5.When the spindle and the bearing are assembled, they should be inspected according to the equipment technical documents. Bearing bearing and bearing pad should be maintained between 0.03-0.04 mm interference.
6.When the fan housing is assembled, the position of the housing should be determined on the basis of the rotor axis and the axial and radial clearance between the inlet of the impeller and the air inlet of the cabinet should be high and within the specified range. Whether the anchor bolts are fastened. If the gap is not specified in the technical documentation, the general axial clearance shall be 1/100 of the outer diameter of the impeller. The radial clearance shall be evenly distributed. The value shall be 1.5 / 1000-3 / 1000 of the outer diameter of the impeller. Adjust the value of the gap to try to improve the efficiency of the fan.
7.When the fan is correct, the fan shaft and the motor shaft of different degrees of axis: radial displacement should not exceed 0.05 mm, the tilt should not exceed 0.2 / 1000.
8.Rolling bearing assembly of the centrifugal fan, the two bearing frame on the bearing hole of different shaft degrees, until the rotor is installed, to flexible rotation prevail.
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