Hudson Industries 8000 manual Install Blade Into HUB, SET Pitch and Track, Check Track, Bolts

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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 EXACT-A-PITCH®digital protractor (Shown in Fig- ure 3) or a bubble protractor to set blade pitch. Mount protractor on a flat bar as a base and place it approximately 1” from tip of blade. Note pitch on protractor. Rotate fan 360⋅, noting high and low pitch readings. Locate place where pitch reading is a mid-point between high and low readings, and set pitch at that point.

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 ft-lb (lubricated) or 300 ft-lb (dry). Recheck pitch setting. Blade must be set within ± 0.2⋅ of desired pitch angle. Tighten clamp bolts evenly. DO NOT OVER-TORQUE CLAMP

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 1-1/2”or more, adjust blade.

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 1-1/2”. Correct blade track by loosening clamp bolts and adjusting blade to match track of other blades. Retighten bolts and recheck track and pitch angle setting. Retighten blade clamp bolts to recommended standard of 280 ft-lb (lubricated) or 300 ft-lb (dry) torque (See Figure 4).

Figure 4

Installation Manual 8000

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January 2004

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Contents Tuf-Liteand Tuf-Lite II Fans Series Hub Assemble Blade Clamp on Blade Neck Assembly with BushingAssembly with Straight Shaft no Bushing Assembly with Tapered Shaft no Bushing RequiredBolts Install Blade Into HUBSET Pitch and Track Check TrackAre aligned Assemble Seal Disc and Mounting BoltsOperating Instructions Check TIP ClearanceParts List Example APT STD. Materials & FinishesInstallation Manual January

8000 specifications

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