BIG ASS FANS 4900 Installation Manual page 24

BIG ASS FAN 4900
18
3. Attach lower yoke (to extension tube)
Attach the lower yoke to the bottom of the extension tube with the
Lower Yoke Hardware as shown.
Tighten the hardware so that it is snug, but not fully tightened.
Lower Yoke Hardware (BAF-Supplied):
a.
b.
c
c.
b
b
a
4. Attach main fan unit (to lower yoke)
CAUTION: The main fan unit is heavy. Use caution when raising it.
Attach the main fan unit to the lower yoke with the Main Fan Unit Hardware as
a
shown. Do not rest the main fan unit on the ground! Make sure the lower cable
is positioned between the lower yoke brackets as shown on the right.
Tighten the bolts to 40 ft·lb (54.2 N·m) using a torque wrench and
socket. Do not discard the main fan unit packaging. It should be used if the
b
fan is ever moved or relocated.
Main Fan Unit Hardware (BAF-Supplied):
a.
b.
c.
b
c
After securing the main fan unit to the lower yoke, allow the fan to hang so that the extension
40 ft·lb (54.2 N·m).
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