Figure 6-27 Marking mounting holes
(1) Marking template (2) Mounting holes
Step 2 Drill holes at the anchor points, and then install expansion bolt assemblies, as shown in Figure
6-28.
Figure 6-28 Installing an expansion bolt
(1) Bolt
(2) Spring washer (3) Flat washer (4) Expansion tube
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 Figure 6-29.
DBS3900 (Ver.B)
Installation Guide
6 Outdoor Scenario with AC Power Supply (BBU Installed
in an APM30H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
46
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