Huawei DBS3900 Installation Manual page 37

DBS3900 LampSite
Installation Guide
Figure 6-26 Drilling holes and installing expansion bolts
(1) M6×60
expansion bolt
1.
2.
3.
4.
5.
Step 4 Align the mounting holes with the four M6×60 expansion bolts. Install spring washer 6 and
flat washer 6 in sequence on each M6×60 expansion bolt, insert the bolts to each expansion
tub, and then use a torque wrench or socket wrench to tighten the four M6×60 bolts with a
torque of 5 N•m to secure the RHUB to the wall, as shown in
Issue 06 (2015-10-30)
(2) Nut
Use a hammer drill with bit 8 to drill holes with a diameter of 8 mm and a depth of 45
mm to 50 mm at the marked anchor points. All the holes have the same depth.
Use a vacuum cleaner to clear the dust inside and around each hole. If the distance
between two holes is incorrect, mark and drill holes again.
Partially tighten an expansion bolt and place it vertically into each hole.
Use a rubber mallet to hit the expansion bolt until the entire expansion sleeve is in the
hole.
Remove the M6×60 bolt, nut, spring washer, and flat washer from each expansion bolt in
sequence.
NOTICE
After removing an expansion bolt, ensure that the top of the expansion sleeve is level
with the wall. If it is not level, the RHUB cannot be installed on the concrete floor
evenly and securely.
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(3) Spring washer (4) Flat washer
6 Installing an RHUB
(5) Extension tub
Figure 6-27.
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