Huawei DBS3900 Installation Manual page 270

DBS3900 LampSite
Installation Guide
Figure 14-32 Marking anchor points
(1) Level
Step 2 Drill holes at the anchor points, and then insert expansion anchor bolt assemblies, as shown in
Figure 14-33.
Figure 14-33 Drilling a hole and inserting expansion anchor bolt assemblies
(1) M10x80 bolt
1.
Issue 08 (2016-05-30)
(2) Mounting bracket for the metal grid
(2) Nut
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.
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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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