Huawei DBS3900 Installation Manual page 180

DBS3900 (Ver.B)
Installation Guide
Figure 7-27 Marking mounting holes
(1) Marking template
Step 2 Drill holes at the anchor points, and then install expansion bolt assemblies, as shown in
7-28.
Figure 7-28 Installing an expansion bolt
(1) Bolt
Step 3 Align the holes on the trapezoidal rack with the four lower mounting holes on the wall, and then
use four M12×30 bolts to secure the trapezoidal rack, as shown in
Issue 06 (2011-09-15)
(2) Spring washer
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7 Outdoor Scenario with DC Power Supply (BBU Installed
(2) Mounting holes
(3) Flat washer
in a TMC11H)
Figure
(4) Expansion tube
Figure 7-29.
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