Rooftop - Motorola SC 4812ET RF Hardware Installation Manual

Site Preparation
– continued
Step
4 Have a second installer turn on the shop vacuum and place the nozzle near the hole to collect dust and
debris (see Figure 2-2). This will extend the life of the drill bit, and give you a better idea of how deep
the hole is. Wrapping a piece of electrical tape around the drill bit to indicate the desired depth is
suggested.
Figure 2-2: Mounting Hole Drilling and Cleaning
AIR GUN USED TO CLEAR
DEBRIS FROM MOUNTING
HOLE
TAPE WRAPPED
AROUND BIT TO
INDICATE DEPTH
5 Repeat Step 3 and 4 for all remaining holes to be drilled for this cabinet.
6 Clean all holes by using the shop vacuum in conjunction with the air compressor gun attachment.
Begin by using short bursts of air several inches away from the hole, gradually decreasing the distance
from the hole while increasing the duration of the air bursts until the hole is completely free of loose
material.

Rooftop

Apr 2001
SC
TM
Table 2-8: Drilling Procedure
Roof load carrying limits must be reviewed and an
appropriate support structure must be installed to support
the RF and Power Cabinet as required.
The cabinet must be elevated sufficiently above the roof
surface to prevent water from puddling around its base.
Although the cabinets are well insulated from the
environment they will not tolerate submersion.
4812ET RF and Power Cabinet Hardware Installation Manual
Action
VACUUM USED TO
COLLECT DEBRIS
WHILE DRILLING/
CLEANING HOLES
WARNING
CAUTION
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