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Cautions for Installation
Observe the safety instructions described in this section when installing the system.
Installation should be done in accordance with the applicable local electric codes.
Before Installing
Before starting the installation, ensure the following:
Install the system in the restricted access area.
While Installing
During installation, ensure the following:
The system power must be cut off before installing.
Ensure that the power switch of the power supply is off when installing the system.
Installing the system with power on may cause system damage or fatal human
injury when connecting or disconnecting cables.
Ensure that workers wear protection gloves and goggles to prevent injury from
debris while drilling holes in a wall or ceiling.
Do not wear accessories such as watches and rings to prevent electrical shock.
When using the AC / DC converter, connect the DC power cable first before
connecting the AC power.
Cover unused ports with a cap. This prevents foreign substances from entering into
the unused ports.
To prevent foreign substances, outdoor air, and moisture from entering the cable
inlet (including cable gland and conduit), finish the inlet as follows:
- Unused inlet: Use the hole finishing materials including cap and rubber packing.
- Cable-installed inlet: After cable installation, block any space in the inlet with
tape, compressed sponge, rubber packing, and silicone.
When operator installs the RRH, the RRH must be within the protective angle
(left/right side 45° each from the central axis) to prevent the RRH from lightning
RT4401-48A Installation Manual v3.0
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Post warning signs in areas where high-voltage cables are installed.
Post "off limit" signs in areas where accidents are most expected.
Use guardrails or fences to block open areas such as ditches, open roof areas,
and scaffolds.
Chapter 1 Before Installation
7
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