Huawei DBS3900 Installation Manual page 69

DBS3900 LampSite
Installation Guide
Installing a pRRU3901 on a ceiling
When a pRRU3901 is installed on a ceiling, installation modes vary with the quality of the
ceiling, as shown in Table 7-3.
Table 7-3 Ceiling-mounted suggestion
Installation
Mode
Installing the
pRRU3901 on
a ceiling by
drilling holes
For details, see
7.4.3 Installing
a pRRU3901
on a Ceiling.
Installing the
pRRU3901 on
a ceiling using
a V clamp
through an
attachment
plate
For details, see
7.4.5 Installing
a pRRU3901
on a Plate.
Installing the
pRRU3901 on
a pole
For details, see
7.4.4 Installing
a pRRU3901
on a Pole.
Installing the
pRRU3901 on
a keel
For details, see
7.4.6 Installing
a pRRU3901
Issue 08 (2016-05-30)
Requirements
 The ceiling, such
as a concrete
ceiling, can bear
a load at least
four times the
weight of the
pRRU3901.

The screws must
be tightened with
a torque of 10
N· m. This
ensures the
screws work
properly and the
ceiling remains
intact without
cracks in it.
 The ceiling, such
as a concrete
ceiling, can bear
a load at least
four times the
weight of the
pRRU3901.
 The thickness of
the ceiling is less
than 80 mm.
A pole under the
ceiling can bear a
load at least four
times the weight of
the pRRU3901.
A keel under the
ceiling can bear a
load at least four
times the weight of
the pRRU3901.
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Mounting Brackets
1. Plate
2. Screw (M6X50)
3. Plastic expansion
sleeve
4. Flat washer
1. Plate
2. V clamp
3. Bolt (M6X80)
For details, see Table
7-4.
For details, see Table
7-5.
7 Installing a pRRU3901
Installation
Diagram
For details, see Table
7-4.
For details, see Table
7-5.
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