Huawei Technologies Co. Ltd PRU11WIFI 用户手册

DBS3900 LampSite
Installation Guide

8 Installing a pRRU3902 or pRRU3911 or

pRRU3911+WIFI

Issue 08 (2016-05-30)

Huawei Proprietary and Confidential

122

Figure 8-7

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 torque the screws to 1.2 N•m, as
shown in Figure 8-8.

Figure 8-8

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 8-9.