Huawei DBS3900 Installation Manual page 38

RRU3249
Installation Guide
Step 2 Install the RRU on the tower.
1.
Issue DraftA (2015-05-30)
Figure 6-14 Hoisting the RRU onto the tower
(1) Lifting sling
Align the backplane with the holes on the upper mounting bracket, install screws on the
holes, and secure the backplane to the upper mounting bracket by tightening the screws, as
shown in Figure 6-15.
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(2) Fixed pulley
6 Installing the RRU
(3) Traction sling
30