Installation References - Huawei OptiX RTN 980L V100 Quick Installation Manual

Installation References

1
Installing RFUs Under a Tower
Check whether the frequency band information about the RFU to be installed is consistent with that about the corresponding
RFU port on the branching unit.
RFU frequency
information
2
Align the guide pin on the RFU with the guide trough on the BU. Install the RFU onto the BU.
 Install a load on any port on the branching unit that is not mounted with an RFU.
For details about how to install a load, go to Page 18.
 Be careful not to damage the gas-proof film over the waveguide port of a
branching unit.
 After the RFU is unpacked, it must be powered on within 24 hours to avoid
moisture accumulation in it.
 Do not damage the coating when you install or replace an RFU.
Partially tighten the four M6 screws of the RFU and then fully tighten them in a diagonal sequence.
4
Apply anti-seize grease to the four M6 captive
screws and the hook on the RFU.
Frequency band
information about the
RFU port
Screwing-stop surface
Installation surface
If the screwing-stop surface of the captive screw
is in complete contact with the installation surface
of the bolt holes, it indicates that the screws are
tightened.
If RFUs were purchased half a year ago and now they need to be
installed on BUs, do not use the anti-seize grease with the RFUs.
Instead, you must locally purchase new anti-seize grease by yourselves.
2
Installing Branching Units
a
Installing One Branching Unit
Lead the lifting sling through the lifting eyes of the branching unit, tie the branching unit securely, and tie the handle
securely using traction slings. Lift the branching unit to the pole.
Guide trough
Guide pin
Fit U-shaped clamps into the installation holes
on the branching unit.
Gas-proof film
No touch
15
Fixed pulley
Lifting sling
When hoisting a branching unit, tie the branching unit to the
lifting sling using a pulley or hoisting ring, with the goal of easily
hoisting the branching unit and reducing friction damage to the
lifting sling.
Traction sling
Tighten the screws on the U-shaped clamps using
a wrench. Untie the lifting slings.