Huawei RRU3971 Installation Manual page 88

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Procedure
Step 1 Disassemble the RRU mounting brackets, as shown in
Figure 7-44 Disassembling the RRU mounting brackets
(1) Main bracket
(5) Flat washer
1.
2.
Issue ()
highest working temperature of the RRU. In this scenario, the IFS06 supports at least three
RRUs. The IFS06 supports a maximum of six RRUs when the ambient temperature is higher
than or equal to the lowest operating temperature of the RRUs and at least 10°C (50°F)
lower than the highest operating temperature of the RRU.
NOTE
For details about the operating temperature of the RRUs, see section "Technical Specifications of
RRUs" in 3900 Series Base Station Technical Description.
Install RRUs in the sequence from bottom to top and from left to right.
This section describes how to install an RRU in height-unrestricted scenarios. The
procedure for installing an RRU 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 screw cap, nuts, spring washers, flat washers, square-neck bolts, and pole
installation bracket from the auxiliary bracket.
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Figure 7-44.
(3) Pole installation bracket
(7) Nut
7 Installing the RRU
(4) Auxiliary bracket
(8) Plastic screw cap
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