Safety recommendations

Follow these guidelines to ensure general safety:

• Never attempt to lift an object that might be too heavy for you to lift by yourself.

• Keep the chassis area clear and dust-free during and after installation.

• If you remove the chassis cover, place it in a safe place.

• Keep tools and chassis components away from walk areas.

• Do not wear loose clothing that may get caught in the chassis. Fasten any tie or scarf and roll up sleeves.

• Wear safety glasses when working under conditions that might be hazardous to your eyes.

• Do not perform any action that may create a hazard to people or makes equipment unsafe.

Follow these guidelines when working on equipment powered by electricity:

• Locate the emergency power-off switch in the room in which you are working. If an electrical accident occurs, you can quickly turn off the power.

• Disconnect all power before doing the following:

  • Installing or removing a chassis.

  • Working near power supplies.

• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power extension cables, frayed power cords, and missing safety grounds.

• Do not work alone if hazardous conditions exist.

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

• Never open the enclosure of the power supply.

• If an electrical accident occurs to another person, proceed as follows:

  • Use caution; do not become a victim yourself.

  • Turn off power to the device.

  • If possible, send another person to get medical aid. Otherwise, assess the condition of the victim and then call for help.

  • Determine if the person needs rescue breathing or external cardiac compressions; then take appropriate action.

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur if electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. Always follow these ESD prevention procedures when removing and replacing modules:

• Ensure that the router chassis is electrically connected to the ground.

• Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. 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.

Caution

For the safety of your equipment, periodically check the resistance value of the anti-static strap. It should be between 1 and 10 megohms (Mohm).

This section describes the requirements your site must meet for the safe installation and operation of your router. Ensure that the site is properly prepared before beginning installation. If you are experiencing shutdowns or unusually high errors with your existing equipment, the guidelines provided in this section can also help you isolate the cause of failures and prevent future problems.

• Keep your system components away from radiators and heat sources, and do not block cooling vents.

• Do not spill food or liquids on your system components, and never operate the product in a wet environment.

• Do not push any objects into the openings of your system components. Doing that can cause fire or electric shock by shorting out interior components.

• Position system cables and power supply cables carefully. Route system cables and the power supply cable and plug so that they cannot be stepped on or tripped over. Be sure that nothing else rests on your system component cables or power cable.

• Do not modify power cables or plugs. Consult a licensed electrician or your power company for electrical modifications at your site. Always follow your local and national wiring rules.

• If you turn off your system, wait at least 30 seconds before turning it on again to avoid system component damage.