User's Manual

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Keep any non-conductive material, such as Styrofoam and other plastics, away
from your work area
5.4.2 LibraPlus Unit Grounding
When you are installing your outdoor units, you need to follow proper grounding
practices. The proper grounding of outdoor units helps to minimize lightning damage
and dissipate static buildup. In general, grounding is accomplished by installing a single
heavy gauge wire, such as a 6 gauge, copper cable, between the outdoor unit’s
grounding lug and the mounting structure’s grounding point.
The following section sets out some grounding guidelines for you to follow during
installation.
It is very important that the grounding system for your outdoor equipment be
installed by a fully qualified, professional installer, and that proper safety
practices are followed in accordance with your local electrical code.
Locate your grounding point as close to the outdoor unit as possible. I t must
be below the unit and must not be inside a building.
The grounding point can be located on an unpainted section of a metal tower,
as section of a building’s metal structure or a ground riser per your applicable
local electrical code.
When you run the ground cable to the grounding point, make certain that it
follows a direct path and that you avoid sharp bends in the cable.
Do not drill holes in tower supports or cross braces to provide a grounding
point.
Do not remove any paint on the outdoor unit chassis.
Do not secure the ground cable in a bundle with other data, power, or RF
cables.
The chassis of the outdoor unit’s power supply must be connected to the frame
or cabinet via a ground strap.
If you are installing more than one radio (ODU) and they will be in close proximity to
each other, do not daisy chain the unitsgrounds to each other. This means that you
should not connect the ground of one unit to the ground of another unit and finally to
the grounding system, as shown in Figure 5:1 Daisy Chain Conf iguration.
LibraPlus 5860 User Guide Pre-installation: Grounding Page 22 of 95