Attach Airfoils To Hub - BIG ASS FANS 4900 Installation Manual

Big Ass Fans recommends completing electrical installation (p. 20) before installing the airfoils.
WARNING: Disconnect power to the fan before installing the airfoils.
1. Attach winglets to airfoils
secure the fasteners. Attach winglets to all six airfoils before attaching
the airfoils to the fan.
Winglet Hardware (BAF-Supplied):
a.
b.

2. Attach airfoils to hub

Slide the airfoils onto the tabs of the fan hub. The airfoils
must be attached to the fan hub with the curved sides facing
downward.
Attach the six airfoil retainers with the Airfoil Hardware. Moving
clockwise around the fan hub, position the airfoil retainers end
over end as shown. Hole A of the retainer should be positioned
over top of Hole B. Do not tighten the bolts until all the airfoil
retainers have been attached!
Tighten the bolts along the outer perimeter to 29 ft·lb
(39.3 N·m) using a torque wrench and 1/2" socket. After the
outer perimeter bolts are torqued, tighten the bolts along the
inner perimeter to 29 ft·lb (39.3 N·m) using a torque wrench
and 1/2" socket.
Airfoil Hardware (BAF-Supplied):
a.
b.
c.
Airfoil Retainer
Hole A
BIG ASS FAN 4900
Installing Airfoils
Hole B
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a
b
a
b
b
c