Huawei DBS3900 Installation Manual page 251

DBS3900 LampSite
Installation Guide
Figure 14-7 Drilling a hole and inserting expansion anchor bolt assemblies
(1) M10x80 bolt
1.
Take proper safety measures to protect your eyes and respiratory tract against the dust before
drilling holes.
2.
3.
4.
5.
After dismantling an expansion anchor bolt, ensure that the top of the expansion tube is on the
same level as the wall. Otherwise, the device cannot be installed on the wall evenly and
securely.
Step 3 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 a 16
Issue 08 (2016-05-30)
(2) Nut
Use a hammer drill with a φ8 bit to drill holes vertically at the marked anchor points.
Ensure that the depth of each hole ranges from 45 mm (1.77 in.) to 50 mm (1.97 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.
Tighten the expansion bolts slightly, and place each expansion bolt vertically into each
hole.
Use a rubber mallet to pound the expansion anchor bolt until it goes all the way into the
hole.
Tighten and then loosen the expansion bolt, and remove the M10 bolt, spring washer,
and flat washer in sequence.
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14 (Optional) Installing the Cabinet and Cabinet Cables
(3) Spring washer (4) Flat washer (5) Expansion tube
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