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