Huawei DBS3900 Installation Manual page 462

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DBS3900 (Ver.B)

Installation Guide

Step 4 Use a level to check that the two anchor holes on the marking template are on a horizontal plane,

place the marking template against the wall, and then use a marker to mark anchor points, as

Holes marked "B" are used as anchor points. The distance between the marking plate and the

ground is 1000-1200 mm.

Figure 13-22 Marking anchor points

The bolts in the wall must bear a stress of a minimum of 1.25 kN.

Step 5 Drill holes at the anchor points, and then install expansion bolt assemblies, as shown in

the IMB03 on the Wall

Step 6 Place the IMB03 onto the two bolts at the upper anchor points, and then use a torque wrench to

pre-tighten the two bolts until a 20-30 mm length of each bolt is reserved out of the wall, as

Issue 06 (2011-09-15)

(Side-Mounted).

Tighten the two bolts at the lower anchor points prior to the bolts at the upper anchor points, and ensure

that the subrack is vertical.

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13 Indoor Scenario (BBU Installed in an IMB03)

(2) Anchor holes