Huawei DBS3900 Installation Manual page 82

DBS3900 LampSite
Installation Guide
Procedure
Step 1 Determine the position for installing the pRRU3901 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 two anchor points. See Figure 7-10.
Figure 7-10 Anchor points on the pRRU3901 mounting bracket (unit: mm)
(1) Ceiling
To prevent inhalation or eye contact with dust, take adequate preventive measures when
drilling holes.
Step 3 Use a hammer drill with φ8 bore to drill holes at the marked anchor points, as shown in
Figure 7-11. 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)
For details about the clearance requirements, see 7.1.3 Space Requirements.
(2) Mounting bracket
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7 Installing a pRRU3901
(3) Anchor point
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