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.
2. 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.
3. Tighten the expansion bolt slightly, and then put the expansion bolt assembly into the hole
vertically.
4. Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into
the hole.
5. Remove the M12x60 bolt, spring washer, and flat washer from each expansion bolt
assembly in sequence.
Figure 8-9 Drilling a hole and installing an expansion bolt assembly
(1) M12x60 bolt
(2) Spring washer (3) Flat washer (4) Expansion tube
Step 3 Install the base and adjust the base level.
1. 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 Figure 8-10.
BTS3900L (Ver.C)
Installation Guide
8 Installing the Cabinet
Issue 07 (2013-11-08) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
34
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