Huawei BBU3900 Installation Manual page 31

Installing the BBU on the Wall
a c
Determining the Anchor Points on the Wall
Place the BBU against the wall, and then use the marking pen to mark
the anchor points.
a
d
Installing the Expansion Bolts
e
Bolt M6×60
Nut
Spring washer 6
Flat washer 6
Expansion tube
30
Fixing the BBU Case on the Wall
Wall
BBU
Flat washer
Spring washer