(4) Attach the (6) airfoil retainers using the Airfoil Hardware. Moving clockwise around the
fan
hub, position the airfoil retainers end over end as shown in figure 4.7. Do not tighten
the bolts until all the airfoil retainers have been attached.
First, tighten the bolts along the outside perimeter to 29 ft·lbf (39 N·m) using a
Socket with torque wrench;
Second, tighten the bolts along the inside perimeter to 29 ft·lbf (39 N·m) using a
Socket with torque wrench;
4.9
CAUTION:
Do not bend the blades when installing, adjusting, or cleaning the fan. Do
notinsert foreign objects between rotating fan blades.
Installation of bottom cover with LOGO
Take
the
bottom
cover
close
to
the
blade
wheel,
bolt
holes
alignment,
bolts
tightened, make
sure
no
bolts
are missing or loose, the bottom
cover does not move after
installation, as shown in figure 4.8
Fig4.7Attach (6) safety ring to Airfoil
Fig4.8 Installation of bottom cover with LOGO
4.10
Checking Strength and
Clearance
If there is any doubt in your mind as to the ability of building structure to which you are
mounting to handle the weight of fan a structural engineer should be consulted.
18