Huawei DBS3900 Installation Manual page 459

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Table of Contents

DBS3900 (Ver.B)

Installation Guide

Figure 13-17 Drilling holes at the anchor points and installing expansion bolt assemblies

(1) M10x60 bolt

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

Figure 13-18 Pre-tightening the bolts at the upper anchor points

(1) Mounting ears on the IMB03

Issue 06 (2011-09-15)

(2) Spring washer 10

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)

(3) Flat washer 10

(4) Expansion tube