Installation Guide

eRelay DBS3900 RRU3252/RRU3256 Installation Guide

6 Hoisting the RRU and Cables onto a Tower

Issue Draft A (2012-11-30)

Huawei Proprietary and Confidential

Figure 6-6 Hoisting fiber optic cables onto the tower

(1) Lifting sling

(2) Fixed pulley

(3) Traction sling

Before hoisting fiber optic cables onto the tower, connect the fiber optic cables to the RRU or

BBU based on the labels on both ends of the cables and determine the hoisting direction.

1. After climbing up to the tower, installation engineer A secures the fixed pulley to the

tower platform support and leads the lifting sling through the fixed pulley.

2. Installation engineer B places the fiber coiler for coiling fiber optic cables on the fiber

spools, and installation engineer D lead the lifting sling through the stretch sling of the

fiber optic cables and use the other sling as a traction sling to secure the cables 4 m

(13.12 ft) away from the lifting sling, as shown in Figure 6-7.