Motorola SC 4812ET RF Hardware Installation Manual page 72

Cabinet Mounting
– continued
4
New Concrete Pad Mounting
72
Step
1
2
3
4
5
6
Mounting the cabinet on a new concrete pad which has been designed to
install the cabinet offers some unique opportunities, as the cables, wires,
and conduits can all be routed into the cabinet from the bottom through
the concrete pad.
After the pad has been poured following the procedure in Chapter 2, the
concrete has cured adequately and the mounting holes drilled as detailed
in Chapter 2, follow the procedures in Table 4-4 to install each cabinet.
SC 4812ET RF and Power Cabinet Hardware Installation Manual
TM
Table 4-3: Rooftop (Elevated Substructure) Mounting
Fasten mounting brackets (see Figure 4-2) onto cabinet with
M12 bolts and washers (supplied in installation hardware).
Do NOT torque the bolts yet.
! CAUTION
Do NOT use the cabinet doors as a hand hold to move the
cabinet around, this could damage the door hinges
Place the cabinet on top of the substructure, so that the mounting
holes are aligned with the holes in the cabinet mounting
brackets.
Install the mounting bolts into the four (4) mounting locations
in the mounting brackets attached to the cabinet bast. Tighten
the bolts to the proper torque recommended by the
manufacturer of the bolts. If using the M12 bolts supplied
with the installation hardware, tighten the bolts to 80 N–m (60
ft–lbs.) torque.
Tighten the M12 bolts attaching the mounting brackets to the
cabinet. Torque to 135 N–m (100 ft–lbs) within a 19 mm
(3/4") torque wrench
Remove the four (4) eye–bolts (see Figure 4-2) on the top of
the cabinet, replace them with the bolts and washers supplied
with the installation hardware using a 24 mm (15/16") hex
driver. Torque to 80 N–m (60 ft–lbs).
Install the wiring as described in Chapter 5 of this manual.
NOTE
The isolation washers supplied in the hardware installation
kit are provided to give the installer the option of
electrically isolating the cabinet should the situation
require it. The use of the washers is not a requirement.
The grounding of each site is unique, and the isolation of
the cabinet is a site specific decision.
DRAFT
Action
. . . continued on next page
Apr 2001
V04.03