Installing A Prru On A Ceiling - Huawei DBS3900 Installation Manual

DBS3900 LampSite
Installation Guide
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8.3.3 Installing a pRRU on a Ceiling

This section describes how to install a pRRU on the ceiling, such as the concrete ceiling,
when the ceiling has adequate load bearing capacity and installation space.
Context
Procedure
Step 1 Determine the position for installing the pRRU based on the construction blueprint and the
clearance requirements.
Step 2 Place the mounting bracket in the installation position against the ceiling. Then, level the
mounting bracket and use a marker to mark four anchor points. See Figure 8-11.
Figure 8-11 Anchor points on the pRRU mounting bracket
(1) Ceiling
Step 3 Use a hammer drill with φ6 bore to drill holes at the marked anchor points, as shown in
Figure 8-12. Use a vacuum cleaner to clean the dust inside and around the holes and measure
the distance between them. If they are inaccurately positioned, re-measure and re-drill the
holes. Then, use a rubber mallet to hit a plastic expansion sleeve into each hole.
Issue 08 (2016-05-30)
If the pRRU is installed on a ceiling, the temperature of the ceiling may increase by a maximum of 30
degrees. Therefore, whether a pRRU can be installed on a ceiling depends on the ceiling material.
For details about the clearance requirements, see 8.1.3 Space Requirements.
(2) Mounting bracket
To prevent inhalation or eye contact with dust, take adequate preventive measures when drilling holes.
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8 Installing a pRRU3902 or pRRU3911 or
pRRU3911+WIFI
(3) Anchor point
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