Motorola SC 4812ET RF Hardware Installation Manual page 48

Site Preparation
Step
2
2 Position the end of the drill bit in the center of the first mark on the floor. Stabilize the drill by holding
the drill handle at the 90_ position, refer to Figure 2-1. Rest the drill against your leg while drilling to
counter the drill's tendency of rotating out of your hand while drilling through reinforcement bars and
stone aggregate.
Figure 2-1: Drill Stabilization
3 Begin to drill in short bursts, keep the drill bit from "walking" by using the side of your work boot to
hold the drill in place until drill "has a bite" in the concrete. Once started, run drill at full speed.
48
– continued
Table 2-8: Drilling Procedure
SC 4812ET RF and Power Cabinet Hardware Installation Manual
TM
Action
POSITION
DRILL BIT IN
CENTER OF
MARK ON
FLOOR
90 Degree
_
PLACE KNEE NEXT TO
DRILL
TO CONTROL ROTATION
POSITION WORK
BOOT NEXT TO BIT
WHEN STARTING TO
PREVENT BIT FROM
WALKING.
. . . continued on next page
Apr 2001
DRAFT