Huawei DBS3900 Installation Manual page 149

DBS3900 LampSite
Installation Guide
(4) Steel hangers
Step 4 Lead two bolts (M4x35) through the mounting bracket and the ceiling plate. Use a torque
screwdriver to torque the bolts to 1.4 N•m, as shown in Figure 8-34.
Figure 8-34 Installing the mounting bracket
If the screws cannot be tightened using a Phillips screwdriver, use a hex key or an electric screwdriver to
assist the installation.
Step 5 Fit the rotation axis on the pRRU into the hooks on the mounting bracket, and then push the
pRRU against the mounting bracket until a click is heard. See Figure 8-35.
Issue 08 (2016-05-30)
(5) U-shaped metal plate
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8 Installing a pRRU3902 or pRRU3911 or
pRRU3911+WIFI
–
142