Huawei DBS3900 Installation Manual page 82

RRU3260
Installation Guide
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Procedure
Step 1 Disassemble the RU mounting brackets, as shown in
Figure 8-44 Disassembling the mounting brackets
(1) Main
bracket
(5) Flat washer
1.
2.
Step 2 Use the M10x50 bolts delivered with the IFS06 to secure the pole installation bracket to the
IFS06, and then use an M10 torque socket wrench to secure the bolts to 30 N· m (265.52
lbf· in.).
Issue 05 (2014-06-30)
For details about the operating temperature of the RU, see section "Technical Specifications of RUs" in
3900 Series Base Station Technical Description.
Install RUs in the sequence from bottom to top and from left to right.
This section describes how to install an RU in height-unrestricted scenarios. The
procedure for installing an RU in height-restricted scenarios is the same as that in
height-unrestricted scenarios.
When installing the pole installation bracket, you need to use the M10x50 bolts delivered
with the IFS06.
Rubber washers are easily compressed or broken, whereas do not need to be replaced.
(2) Square-neck
bolt
(6) Spring washer
Use an M6 inner hexagon torque screwdriver to remove the four inner hexagon screws
on the pole installation bracket, and remove the main bracket from the pole installation
bracket.
Use an M10 torque wrench to loosen the nuts on the two square-neck bolts, and remove
the plastic cap, nuts, spring washers, flat washers, square-neck bolts, and pole
installation bracket from the auxiliary bracket.
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Figure 8-44.
(3) Pole installation
bracket
(7) Nut
8 Installing the RU
(4) Auxiliary
bracket
(8) Plastic cap
74