Installing Lower Support - Huawei Airbridge cBTS3612 Installation Manual

Installation Manual
Airbridge cBTS3612 CDMA Base Station
III. Drilling
Drill holes on the floor at the marks of the cabinet connecting holes with a percussion
drill. The drill bit size should be v14 or v16.
Caution:
1. Generally, the selected drill bit is bigger than the expansion bolt. If the hole diameter is too small for
the F14 drill bit, enlarge the hole diameter by technical means.
2. Hold the drilling bit vertical to the floor during drilling. Hold tight the drillst o ck with two hands to keep it
in the right direction, as vibrations of the drill may damage the floor or produce a slanting hole.
3. The hole depth should be the length of the expansion bolt stem plus the drill bit. All holes should
share the same. Before measuring the hole depth, remove the dust inside the hole with a vacuum
cleaner, then drill again if necessary.
4. If the ground is too hard and smooth to settle the drill bit, punch out a pit with a chisel before drilling.

3.2.3 Installing Lower support

I. Installing the expansion bolt
1) Before the installation, remove the dust inside and outside the holes with a
vacuum cleaner, and then check the hole distance. Whenever big errors occur,
the concerned hole must be re-located and re-drilled.
2) Unfix the spring washer, nut and the big plain washer, put the bolt into the hole
and strike it with a hammer (such as nail hammer) until the bolt is completely
driven into the hole. To avoid the vibration of the bolt in the hole, put the nut on
the bolt and screw the nut until the bolt is slightly exploded in the hole.
Caution:
Take off the spring washer before installation, otherwise the washer will get invalid when the expansion
bolt is knocked. Carefully knock the bolt into the hole so as to avoid damaging the bolt thread.
II. Installing the lower support
1) Place the insulating plate and the lower support in turn aligning with the four
expansion bolts.
2) Put insulating covering, big plain washers, spring washers Ö12 and nuts M12
onto the four expansion bolts in turn; make the nuts cross-fastened one by one;
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Hardware Installation
3 Cabinet Installation