3A. Attach Upper Mount To I-Beam - Bigass 4900 Manuel D'installation

3a. Attach Upper Mount to I-Beam

If you are mounting the fan to angle irons, skip to step 3b on the following page.
Note: Spacers are only used on I-Beams when the beam flange exceeds 3/8" (1 cm).
Secure the upper mount to the I-beam with the Upper Mount Hardware. Tighten the bolts to 40 ft·lb (54.2 N·m)
using a torque wrench and 3/4" socket.
Proceed to step 4.
Upper Mount Hardware:
a. (4) 1/2-13 x 2" GR 8 Bolt
b. (8) 1/2'' Flat Washer
c. (4) 1/2-13 Nylock Nut
d. (2) Beam Clip
e. (2) Spacer
Note: Ensure the spacers are oriented as shown.
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