Huawei BTS3900L Installation Manual page 43

BTS3900L (Ver.C)
Installation Guide
2.
3.
4.
5.
Figure 8-9 Drilling a hole and installing an expansion bolt assembly
(1) M12x60 bolt
Step 3 Install the base and adjust the base level.
1.
Issue 07 (2013-11-08)
CAUTION
Take proper safety measures to protect your eyes and respiratory tract against the dust
before drilling holes.
After disassembling the expansion bolt assembly, ensure that the top of the expansion tube
is on the same level as the floor.
Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing
is too wide or too narrow, locate and drill holes again.
Tighten the expansion bolt slightly, and then put the expansion bolt assembly into the hole
vertically.
Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into
the hole.
Remove the M12x60 bolt, spring washer, and flat washer from each expansion bolt
assembly in sequence.
(2) Spring washer
Place the insulating spacer and the base on the floor, align the mounting holes in the base
and in the insulating spacers with the holes of the expansion bolts in the floor, and then use
four M12x60 bolts to secure the base, as shown in
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(3) Flat washer
Figure 8-10.
8 Installing the Cabinet
(4) Expansion tube
34