Huawei DBS3900 Installation Manual page 67

DBS3900 LampSite
Installation Guide
To prevent inhalation or eye contact with dust, take adequate preventive measures when
drilling holes.
Step 3 Use a hammer drill with φ8 bore to drill holes at the marked anchor points, as shown in
Figure
the distance between them. If they are inaccurately positioned, re-measure and re-drill the
holes. Then, use a rubber mallet to hit a plastic expansion sleeve into each hole.
Figure 7-7 Drilling holes and installing expansion bolts
Step 4 Lead the M6x50 screws through the washers, and then through the drilling holes on the
mounting bracket to the plastic expansion sleeves, and torque the screws to 5 N•m, as shown
in Figure
Issue 06 (2015-10-30)
CAUTION
7-7. Use a vacuum cleaner to clean the dust inside and around the holes and measure
7-8.
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