Safety Warnings

This handout lists the safety warnings necessary for handling this chassis. Before you install or service the chassis, review these safety warnings to avoid injuring yourself or damaging the equipment.

For a complete list of translated safety warnings, see the Regulatory Compliance and Safety Information — Cisco NCS 500 Series Routers document.

The safety warnings are grouped under the following sections:

Standard Warning Statements


Warning

Statement 1071—Warning Definition

IMPORTANT SAFETY INSTRUCTIONS

Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Read the installation instructions before using, installing, or connecting the system to the power source. Use the statement number provided at the end of each warning statement to locate its translation in the translated safety warnings for this device.

SAVE THESE INSTRUCTIONS


Warning

Statement 414—Connected To Grounded Outlet

In the Scandinavian countries (Denmark, Finland, Iceland, Norway, and Sweden) the appliance must be connected to a grounded outlet.


Warning

Statement 1017—Restricted Area

This unit is intended for installation in restricted access areas. Only skilled, instructed, or qualified personnel can access a restricted access area.


Warning

Statement 1040—Product Disposal

Ultimate disposal of this product should be handled according to all national laws and regulations.


Warning

Statement 1047—Overheating Prevention

To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of: –40 to 149°F (–40 to 65°C).


Warning

Statement 1049—Rack Installation

To reduce the risk of bodily injury, mount the chassis on a rack that is permanently affixed to the building.


warning_nonsafety

Statement 294—Class A Warning for Korea

This is a Class A device and is registered for electromagnetic compatibility (EMC) requirements for industrial use. The seller or buyer should be aware of this. If this type was sold or purchased by mistake, it should be replaced with a residential-use type.


Warning

Statement 1030—Equipment Installation

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Safety Guidelines for Personal Safety and Equipment Protection

The following guidelines ensure your safety and protect the equipment. This list does not include all the potentially hazardous situations. Therefore, you must be alert.

  • Before moving the system, always disconnect all power cords and interface cables.

  • Never assume that power is disconnected from a circuit; always check.

  • Before and after installation, keep the chassis area clean and dust free.

  • Keep tools and assembly components away from walk areas where you or others can trip over them.

  • Do not work alone if potentially hazardous conditions exist.

  • Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

  • Do not wear loose clothing that may get caught in the chassis.

  • When working under conditions that may be hazardous to your eyes, wear safety glasses.

Safety Precautions for Module Installation and Removal

Be sure to observe the following safety precautions when you work on the chassis.


Warning

Statement 1006—Chassis Warning for Rack-Mounting and Servicing

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

  • This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

  • When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

  • If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.


Warning

Statement 1008—Class 1 Laser Product

This product is a Class 1 laser product.


Warning

Statement 1011—Staring into Laser Beam

Do not stare into the beam or view it directly with optical instruments.


Warning

Statement 1016—Invisible Laser Radiation

Invisible laser radiation is present.


Warning

Statement 1030—Equipment Installation

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.


Warning

Statement 1089—Instructed and Skilled Person Definitions

An instructed person is someone who has been instructed and trained by a skilled person and takes the necessary precautions when working with equipment.

A skilled person or qualified personnel is someone who has training or experience in the equipment technology and understands potential hazards when working with equipment.


Warning

Statement 1090—Installation by Skilled Person

Only a skilled person should be allowed to install, replace, or service this equipment. See statement 1089 for the definition of a skilled person.

Safety with Electricity


Warning

Statement 43

Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.


Warning

Statement 1003—DC Power Disconnection

Before performing any of the following procedures, ensure that power is removed from the DC circuit.


Warning

Statement 1004—Installation Instructions

Read the installation instructions before using, installing, or connecting the system to the power source.


Warning

Statement 1005—Circuit Breaker

This product relies on the building’s installation for short-circuit (overcurrent) protection. To reduce risk of electric shock or fire, ensure that the protective device is rated not greater than:


Warning

Statement 1019—Main Disconnecting Device

The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device.


Warning

Statement 1022—Disconnect Device

To reduce risk of electric shock and fire, a readily accessible two-poled disconnect device must be incorporated in the fixed wiring.


Warning

Statement 1024—Ground Conductor

This equipment must be grounded. To reduce the risk of electric shock, 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.


Warning

Statement 1025—Use Copper Conductors Only

To reduce risk of fire, use copper conductors only.

Warning

Statement 1028—More Than One Power Supply

This unit might have more than one power supply connection. To reduce risk of electric shock, remove all connections to de-energize the unit.


Warning

Statement 1046—Installing or Replacing the Unit

To reduce risk of electric shock, when installing or replacing the unit, the ground connection must always be made first and disconnected last.


Warning

Statement 1064—Grounded Equipment

This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure that the switch functional ground lug is connected to earth ground during normal use.


Warning

Statement 1073—No User-Serviceable Parts

There are no serviceable parts inside. To avoid risk of electric shock, do not open.

Warning

Statement 1074—Comply with Local and National Electrical Codes

To reduce risk of electric shock or fire, installation of the equipment must comply with local and national electrical codes.


Warning

Statement 1088—Avoid Servicing Outdoor Connections During an Electrical Storm

Avoid using or servicing any equipment that has outdoor connections during an electrical storm. There may be a risk of electric shock from lightning.


Warning

Statement 1252—Equipment Grounding

This equipment must be grounded. To reduce the risk of electric shock, the power cord, plug, or combination must be connected to a properly grounded electrode, outlet, or terminal.

When working on equipment that is powered by electricity, follow these guidelines:

  • Locate the room’s emergency power-off switch. If an electrical accident occurs, you know where to quickly turn off the power.

  • Before starting work on the system, turn off the DC main circuit breaker and disconnect the power terminal block cable.

  • Disconnect all power when:

    • Working on or near power supplies

    • Installing or removing a device chassis or network processor module

    • Performing most hardware upgrades

  • Never install equipment that appears damaged.

  • Carefully examine your work area for possible hazards, such as moist floors, ungrounded power extension cables, and missing safety grounds.

  • Never assume that power is disconnected from a circuit; always check.

  • Never perform any action that creates a potential hazard to people or makes the equipment unsafe.

  • If an electrical accident occurs and you are uninjured:

    • Use caution to avoid injuring yourself.

    • Turn off power to the device.

    • Seek medical attention, if necessary.

Use the following guidelines when working with any equipment that is disconnected from a power source, but connected to telephone wiring or network cabling:

  • When installing or modifying telephone lines, use caution.

  • Never install telephone jacks in wet locations unless the jack is designed to handle such locations.

  • Never install telephone wiring during a lightning storm.

Cautions and Regulatory Compliance Statements for NEBS

The NEBS-GR-1089-CORE regulatory compliance statements and requirements are discussed in this section.


Warning

Statement 7003—Shielded Cable Requirements for Intrabuilding Lightning Surge

The intrabuilding port(s) of the equipment or subassembly must use shielded intrabuilding cabling/wiring that is grounded at both ends.

  • Copper Gigabit Ethernet ports

Note

Statement 7013—Equipment Grounding Systems—Common Bonding Network (CBN)

This equipment is suitable for installations using the CBN.

Warning

Statement 7016—Battery Return Conductor

Treat the battery return conductor of this equipment as DC Isolated (DC-I).

Note

Statement 8015—Installation Location Network Telecommunications Facilities

This equipment is suitable for installation in network telecommunications facilities.


Note

Statement 8016—Installation Location Where the National Electric Code (NEC) Applies

This equipment is suitable for installation in locations where the NEC applies.


Note

This equipment is designed to boot up in less than 30 minutes, depending on its neighboring devices that must be fully up and running.

Power Supply Considerations

Check the power at your site to ensure that you are receiving clean power (free of spikes and noise). If necessary, install a power conditioner.

Guidelines for DC-Powered Systems

Basic guidelines for DC-powered systems include the following:

  • Each chassis power supply has its own dedicated input power source. The source must comply with the safety extra-low voltage (SELV) requirements in the UL 60950, CSA 60950, EN 60950, and IEC 60950 standards.

  • Protect the circuit by a dedicated two-pole circuit breaker. Ensure that the circuit breaker is sized according to the power supply input rating and local or national code requirements.

  • The circuit breaker is considered as the disconnect device and is easily accessible.

  • The system ground is the power supply and chassis ground.

  • Use the grounding lug to attach a wrist strap for ESD protection during servicing.

  • Do not connect the DC return wire to the system frame or to the system-grounding equipment.

  • Ensure that the DC return is grounded at the source side.

  • Ensure that each power feed of the equipment is connected to different sources.

Prevent Power Loss

Use the following guidelines to prevent power loss to the device:

  • To prevent input power loss, ensure that the maximum load on each circuit supplying the power is within the current ratings of the wiring and breakers.
  • In some systems, you can use an UPS to protect against power failures at your site. Avoid UPS types that use ferroresonant technology. These UPS types can become unstable with systems such as the device, which can have substantial current-draw fluctuations due to bursty data traffic patterns.

Determining power requirements is useful for planning the power distribution system to support the device.

Preventing ESD Damage

Electrostatic Discharge (ESD) can damage equipment and impair electrical circuitry. ESD may occur when electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. When removing and replacing modules, always follow these ESD prevention procedures:

  • Ensure that the device chassis is electrically connected to earth ground.

  • Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. To channel unwanted ESD voltages safely to ground, connect the clip to an unpainted surface of the chassis frame. To guard against ESD damage and shocks, the wrist strap and cord must operate effectively.

  • If no wrist strap is available, ground yourself by touching a metal part of the chassis.

  • When installing a component, use any available ejector levers or captive installation screws to properly seat the bus connectors in the backplane or midplane. These devices prevent accidental removal, provide proper grounding for the system, and help to ensure that bus connectors are properly seated.

  • When removing a component, use available ejector levers or captive installation screws, if any, to release the bus connectors from the backplane or midplane.

  • Handle components by only their handles or edges; do not touch the printed circuit boards or connectors.

  • Place a removed component board side up on an antistatic surface or in a static-shielding container. If you plan to return the component to the factory, immediately place it in a static-shielding container.

  • Avoid contact between the printed circuit boards and clothing. The wrist strap only protects components from ESD voltages on the body; ESD voltages on clothing can still cause damage.

  • Never attempt to remove the printed circuit board from the metal carrier.

For the safety of your equipment, periodically check the resistance value of the antistatic wrist strap. Maintain the value between 1 and 10 Mohm.