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Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation Guide
Chapter 2 Preparing for Installation
Safety Guidelines
Warning
Avoid using or servicing any equipment that has outdoor connections during an electrical storm.
There may be a risk of electric shock from lightning.
Statement 1088
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Read the installation instructions before connecting the system to the power source.
Statement 1004
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. For a DC
installation, ensure that the branch circuit breaker is rated a maximum 15A for DC systems. For AC
systems, 15A for voltages greater than 200Vac; 20A for voltages below 127Vac.
Statement 1005
Warning
Take care when connecting units to the supply circuit so that wiring is not overloaded.
Statement 1018
Warning
The plug-socket combination must be accessible at all times, because it serves as the main
disconnecting device.
Statement 1019
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ45 connectors. Use caution when connecting cables.
Statement 1021
Warning
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.
Statement
1022
Warning
To reduce the risk of fire, use only 26 AWG or larger telecommunication line cord.
Statement 1023
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Warning
Use copper conductors only.
Statement 1025
Warning
This unit might have more than one power supply connection. All connections must be removed to
de-energize the unit.
Statement 1028
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