User's Manual

ZXC10 BTSB (V1.0) cdma2000 Base Transceiver Station Installation Manual
4-12
Rack area
M10X40 embedded expansion nut
ф12 drill bit is recommended for
holes of 43 mm deep
Fig. 4.2-11 Locations of the Installation Holes for the Four Bases
2. Drilling
After the scoring according to Fig. 4.2-11, select φ12 bit for drilling. Keep the
bit vertical to the floor. Use both hands to hold the drill handle tightly and
straightly without swing, to avoid damaging floor and incline the hole.
The hole depth should be equal to the length of the expansion tube of expansion
nut (or bolt) plus the flare head length. While drilling holes, use a vacuum
cleaner to remove dust. Measure the space between holes, place the adjustable
base and check whether the holes are matched. For holes with large deviation, it
is necessary to reposition and re-drill the holes before installing the expansion
bolts.
Insert the expansion nut and expansion tube into the hole. Strike the expansion
bolt with a rubber hammer till the expansion tube of the expansion bolt fully
enters the floor. If the expansion bolt is being installed, the washer and nut on
the bolt should be removed first.