RRU3269
Installation Guide
8 Installing the RRU
Issue Draft B (2018-05-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
78
1.
Use a hammer drill with a Ф12 bit to drill holes vertically at the marked anchor points
with the depth ranging from 55 mm (2.17 in.) to 60 mm (2.36 in.), use a vacuum cleaner
to clear the dust out from inside and around the holes, and measure the distances between
holes. If any of the holes is beyond the acceptable range, mark a new anchor point and
drill a new hole.
Take proper safety measures to protect your eyes and respiratory tract against the dust before
drilling holes.
2.
Tighten the expansion anchor bolts slightly and place one vertically into each hole.
3.
Use a rubber mallet to pound the expansion anchor bolt until it goes into the hole
completely.
4.
Tighten and then loosen the expansion bolt, and remove the M10 bolt, spring washer,
and flat washer in sequence.
After dismantling an expansion anchor bolt, ensure that the top of the expansion sleeve is on
the same level as the wall. Otherwise, the device cannot be installed on the wall evenly and
securely.
Step 4
Install the pole installation bracket on the expansion anchor bolts, place the flat washers,
spring washers, and nuts through the expansion anchor bolts in sequence, and then use an
M10 torque socket to tighten the nuts to 30 N·m (265.52 lbf·in.), as shown in Figure 8-39.
