Attach Airfoils (To Main Fan Unit) - BIG ASS FANS Essence Installation Manual

ESSENCE
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28
Installing Airfoils (cont.)

3. Attach airfoils (to main fan unit)

WARNING: Disconnect power to the fan before installing airfoils.
Attach the eight (8) airfoil retainers using the Airfoil Hardware. Moving clockwise around the fan hub, position the airfoil retainers as
shown. Hole A of the retainer should be positioned over top of Hole B. Do not tighten bolts until all airfoil retainers have been
attached!
Tighten the bolts along the outside perimeter to 29 ft·lb (39.3 N·m) using a torque wrench with a 6 mm Allen head socket. After the
outer perimeter bolts are torqued, tighten the bolts along the inner perimeter to 29 ft·lb (39.3 N·m).
Airfoil Hardware (BAF-Supplied):
If the hardware is stainless steel, do not use power tools!
a. (16) M8 x 18 mm Socket Head Cap Screw
b. (16) 8 mm Belleville Washer
Belleville Washer Airfoil Retainer
Hole A
Hole B
b
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