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5
Installation
Rotation and Flow Direction
The rotation direction is correct when the airflow moves from the
convex back (suction surface) of the blade, to the concave side
(pressure surface). Figure 1 shows the conventional clockwise di-
rection of rotation and normal direction of airflow as viewed from
the discharge face of the rotor.
Installation Instructions
1––Remove blade pillow block and fasteners 4, 5, 6, 7, 15 from the
hub disk, one set a time (Figure 2).
2––If the hub has not been supplied already assembled to the flange,
install the coupling flange 2 on the disk 3, complying with torque
settings, bolt orientation, tightening order, and pins as shown in the
table following Figure 2.
Flow Direction
Flow Direction
Figure 1