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         

Copyright © Huawei Technologies Co., Ltd. 

129 

 

This section describes how to install a pRRU on a plate. If a suspended ceiling plate has 
adequate load bearing capacity and installation space, the pRRU can be installed on the plate. 
However, it is good practice not to install a pRRU on an aluminum plate. The installation 
modes are classified into installation on a removable suspended ceiling plate and installation 
on an overall suspended ceiling. 

 

Installation on a removable suspended ceiling plate 

This installation mode applies when the suspended ceiling plate (for example, a metal 
plate) is removable. 

a. 

Determine the position for installing the pRRU based on the construction blueprint 
and the clearance requirements. 

For details about the clearance requirements, see 8.1.3 Space Requirements. 

b. 

Place the mounting bracket in the installation position against the wall. Then, level 
the mounting bracket and use a marker to mark two anchor points. See Figure 8-18. 

 Anchor points on the pRRU mounting bracket 

 

(1) Suspended ceiling plate 

(2) Mounting bracket 

(3) Anchor point 

 

To prevent inhalation or eye contact with dust, take adequate preventive measures when drilling holes. 

c. 

Use a hammer drill with φ6 bore to drill holes at the anchor points. 

d. 

Lead two bolts (M4) through the mounting bracket and the suspended ceiling plate, 

and use a torque screwdriver to torque the bolts to 1.4 N•m, as shown in Figure 
8-19.