Huawei DBS3900 Installation Manual page 239

DBS3900 (Ver.B)
Installation Guide
Step 3 Align the base, and then install the bolt with the spring washer and flat washer, as shown in
Figure
Figure 8-5 Aligning the base
Step 4 Use a level to check the base level. If the base is not level, use adjusting pads to adjust the base
level, as shown in
Figure 8-6 Adjusting the base level
(1) Level
Step 5 Use a torque wrench to tighten the bolts with the tightening torque of 45 N·m, as shown in
Figure
Issue 06 (2011-09-15)
CAUTION
After dismantling the expansion bolt assembly, ensure that the top of the expansion tube
is on the same level as the floor.
8-5.
Figure 8-6.
8-7.
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8 Outdoor Scenario with DC Power Supply (BBU Installed
(2) Adjusting pad
in a +24 V DC APM30H)
226