Wire The Fan And Vfd; Install The Airfoils - Bigass 4900 Manuel D'installation

10. Wire the Fan and VFD

WARNING: To reduce the risk of electric shock, wiring should be performed by a qualified electrician!
Incorrect assembly can cause electric shock or damage the motor and the controller!
Make sure power wiring is routed to the installation site. The minimum supply circuit size is 20 A @ 100–125 V, 1
Φ. See Wiring Diagrams & Electrical Guidelines in the following section for instructions and guidelines on wiring
your fan.

11. Install the Airfoils

WARNING: Disconnect power to the fan before installing the airfoils.
A. Attach winglets to airfoils
Attach a winglet to each airfoil using the Winglet
Hardware. Both a Phillips head and flat head screwdriver
are required to properly secure the fasteners. Attach
winglets to all six airfoils before attaching the airfoils
to the fan.
Winglet Hardware:
a. (6) 10-24 x 3/4" Barrel
b. (6) 10-24 x 1/2" Bolt
B. 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:
a. (12) 5/16-18 x 2'' GR 8 Bolt
b. (24) 5/16" Flat Washer
c. (12) 5/16-18 Nylock Nut
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Airfoil Retainer
Hole B
Hole A
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