Huawei DBS3900 Installation Manual page 76

RRU3260
Installation Guide
Prerequisites
The hoist clamp on the main bracket is secured properly.
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Context
The wall on which RUs are installed must meet the following requirements:
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Procedure
Step 1 Disassemble the RU mounting brackets, as shown in
Figure 8-36 Disassembling the mounting brackets
(1) Main
bracket
(5) Flat washer
Issue 05 (2014-06-30)
Do not stand the RU upright because the RF ports cannot support the weight of the RU.
Place a foam pad or cardboard under the RU to protect the RU housing from damage
during the installation.
For each RU, the wall must be able to bear a weight four times the RU's weight and the
bolts' pulling force of 1.25 kN (281.25 lbf) vertical to the wall.
Expansion anchor bolts must be tightened to 30 N· m (265.52 lbf· in.) so that the bolts
stay secured without damaging the wall.
(2) Square-neck
bolt
(6) Spring washer
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Figure 8-36.
(3) Pole installation
bracket
(7) Nut
8 Installing the RU
(4) Auxiliary
bracket
(8) Plastic cap
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