Safety Guidelines

This chapter describes safety guidelines that must be followed for personal safety and for the proper handling and operation of equipment. If you have questions relating to the safe use of the Cisco Optical Networking System (ONS) 15304 router, please contact Cisco Customer Support.

Safety Recomm endatio ns

To avoid injury, damage to equipment, or service interruption, follow all danger warnings provided with this product and the safety procedures established by your company.

It is not unusual for static electricity charges to build up on the body if a person walks a short distance. This buildup is sufficient to damage a Cisco ONS 15304, cables connected to the unit, or a field-replaceable unit (FRU). Always wear a skin-contact electrostatic discharge grounding strap when you are working on system components. Attach the strap to the ground plug colocated to the right of the power connectors on the Cisco ONS 15304.

Your company can provide antistatic protection by mounting bays on conductive floor coverings and providing conductive shoes or heel grounders.

In general, comply with the following guidelines:

Do not place the Cisco ONS 15304 on an unstable cart, stand, or table. It might fall and cause serious damage to the product.
Slots and openings in this product's sides are provided for ventilation. To protect it from overheating, these openings must not be blocked or covered.
Avoid installation during an electrical storm, when lightning is present, or in wet conditions.
Use caution when working with electrical wiring and equipment or in wet conditions.
Use caution when working with optical transceiver equipment and cabling.
To reduce the risk of electrical shock, do not disassemble this product. Service should be performed by trained personnel only. Opening or removing covers or FRUs might expose you to dangerous voltages or other risks. Incorrect reassembly can cause electrical shock when the unit is subsequently used.

For detailed information on proper mounting instructions, refer to "Installing the Cisco Optical Networking System 15304."

Field-Replaceable Units

When handling, installing, or replacing FR Us, you must observe the following precautions:

Wear a wrist strap or other static grounding device before removing and replacing FRUs.
Place each FRU in an antistatic bag when not mounted in a Cisco ONS 15304.
Do not stack FRUs on or against each other.
Inspect all FRUs for damage before installing them in the Cisco ONS 15304. Closely inspect all pin connectors to ensure all pins are undamaged.
Protect all transmit and receive optical connectors by covering them with clean dust caps at all times.

For details on installing FRUs, refer to the appropriate configuration note that accompanied your Cisco ONS 15304 router.

Optical Fib ers

Laser Radiation

The Cisco ONS 15304 uses laser sources that emit lightwave energy into fiber cables. This energy is within the red (visible) and infrared (invisible) parts of the electromagnetic spectrum.

Laser products are subject to federal and state regulations and local practices. Regulation 21 CFR 1040 of the U.S. Bureau of Radiological Health requires manufacturers to certify each laser product as Class I, II, III, or IV, depending on the characteristics of the laser radiation emitted. In terms of health and safety, Class I products present the least hazard (none), while Class IV products present the greatest hazard.

The Cisco ONS 15304 complies with 21 CFR 1040, Chapter 1, subchapter J as a Class I laser product as set forth by the U.S. Bureau of Radiological Health. These regulations ensure that there is no danger to personnel from the laser transmitter when the system is in its operating configuration. A label indicating this is located near the optical connector on the front of the Cisco ONS 15304.

During testing and maintenance, some procedures require the handling of optical fibers that may be connected to optical transmitters. Under these circumstances, laser radiation with the limits of Class IIIb might be present.

Class IIIb is of sufficient magnitude to cause injury to personnel and caution must be used to avoid exposure. This precaution applies to any point in the system where the laser signal can be accessed.

When accessing a fiber-optic connector, you must remove the SDH access module (SAM) card to turn off the laser emissions on the Cisco ONS 15304 SAM.

Handling Optical Fibers

When working with optical fibers, you must observe the following precautions:

Avoid direct exposure to fiber ends or optical connector ends in the laser signal path.
Place all optical fiber cuttings in a suitable container.
Handle optical fibers with care. Keep them in a safe and secure location during installation.
Protect unconnected optical fiber connectors with dust caps.
Follow the manufacturer's instructions when using an optical test set. Incorrect calibration or control settings could result in hazardous levels of radiation.

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