Huawei DBS3900 Installation Manual page 132

DBS3900 LampSite
Installation Guide
Figure 8-12 Drilling holes and installing expansion bolts
Step 4 Lead the M3.5x35 screws through the washers, and then through the drilling holes on the
mounting bracket to the plastic expansion sleeves, and use a torque screwdriver to torque the
screws to 1.2 N•m, as shown in Figure 8-13.
Figure 8-13 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 8-14.
Issue 08 (2016-05-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8 Installing a pRRU3902 or pRRU3911 or
pRRU3911+WIFI
125