Fixing Support - Huawei Airbridge cBTS3612 Installation Manual

Installation Manual
Airbridge cBTS3612 CDMA Base Station
back to its installation position and run the expansion bolt through the installation hole
of the support.

3.3.5 Fixing Support

1) Align the hole on the anti-static floor with the connecting holes of the support.
Screw the M12×70 bolts from the top to bottom. Meanwhile, place the plain
washer, spring washer and insulating covering (for the purpose of increasing the
contact area) as is shown in Figure 3-12.
2) Gently knock the support to adjust the height so that the anti-static floor falls on
its original place on the framework. Make sure that the upper plane presses
against the anti-static floor. Then, screw the tightening bolts on the anti-static
floor.
3) Make the expansion bolts cross fastened to 45Nm with a Torque wrench one by
one to reduce the stress between the bolts and the support.
4) Tighten the height-lock bolts to 45Nm with a Torque wrench. The bolts in the
middle should be tightened first and then those on both sides. Figure 3-12 is the
diagram of bolt position.
Caution:
Fasten the three bolt sets in strict accordance with the above-mentioned procedures.
i.e.: anchor bolt for the floordexpansion boltdheight - lock bolt (first in the middle, then on both sides).
(1) Anti-static floor
(4) Big plain washer Ö12
(7) Nut M12
Figure 3-12 The position of fastening bolts
(2) Bolt M12×70
(5) Height-lock bolts (both sides)
(8) Exploded expansion bolt M12×80
3-14
Hardware Installation
3 Cabinet Installation
(3) Spring washer Ö12
(6) Height-lock bolt (middle)