INSTALL BLADE INTO HUB
Hoist the blade into position. (Blade and clamp halves weight about 300 lbs.) Slide blade clamp into blade arm plates and install four
(4)blade studs, eight (8) lockwashers and eight (8) nuts (See Figure 2). Tighten lightly.
Figure 2
SET PITCH AND TRACK
Use Hudson
Rotate blade in clamp until digital protractor shows specified pitch angle to within ±0.2⋅. (Fan pitch angle is shown on fan specifica- tion sheet for design duty.)
After desired pitch angle is set, raise and lower end of fan blade and find midpoint of blade travel. Hold blade at the midpoint. Pull blade back so that it sits against blade clamp. Push blade to the right to remove all slack.
Use torque wrench to tighten clamp bolts to recommended stan- dard of 280
BOLTS.
Figure 3
When bolts are tightened, hold a pencil against top end of blade and mark the level onto a fixed object, such as a pole or the fan ring.
Install remaining blades at same place as first blade, following pro- cedures above. After tightening bolts, mark top end of each blade in same place first blade was marked. If marks differ by
CHECK TRACK
After fan is installed in fan ring, outline top end of each blade onto fan ring with a marker. The difference between levels of highest and lowest outlines should not be more than
Figure 4
Installation Manual 8000 | Page 3 of 8 | January 2004 |