Huawei RRU3908 V1 Installation Manual page 35

Appendix
a
Binding the RRU and Installation Components
2. Lifting the RRU and Installation Components to the Tower
Lifting rope
3. Lifting the CPRI Optical Cable up to the Tower
Cut off a 200 mm long corrugated pipe with the
diameter of 25 mm.
Lead the fiber tails labeled 1A and 1B of the
optical cable into the corrugated pipe by 160 mm.
Wrap up the corrugated pipe and optical cable
with the color tape.
For the tower made of steel pipes, tie the black
jacket to the corrugated pipe at the position 150 mm
away from the color tape, and then lift the optical
cable up to the tower.
For the tower made of angle steel girders, carry
the optical cable onto the tower when climbing up to
the tower.
After the optical cable is lifted up to the tower,
remove the color tape and corrugated pipe before
installing the optical cable.
Pulley
Steering rope
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Installer A climbs onto the tower. Then, installer
A fixes the pulley to the support of the tower
platform and leads the lifting rope through the
pulley.
Installer C uses a lifting rope to bind the RRU
and installation components as shown in the
preceding figure and then ties a knot in the steering
rope at the handle of the RRU.
Installer B pulls the lifting rope, and at the same
time, installer C pulls the steering rope away from
the tower to prevent the RRU and installation
components from colliding with the tower.
Installer A holds the RRU and installation
components and untie the ropes.
Color tape
Corrugated pipe