Observe the following general precautions when using and working with your chassis:

• 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 so can cause fire or electric shock by shorting out interior components.

• Position system cables and power supply cable carefully. Route system cables and the power supply cable and plug so that they are not stepped on or tripped over. Ensure that nothing is 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 site modifications. Always follow your local and national wiring rules.

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

Use the following checklist to carry out all site planning tasks:

• The site meets environmental requirements.

• The site’s air conditioning system can compensate for the heat dissipation of the chassis.

• The floor space that the chassis occupies can support the weight of the system.

• Electrical service to the site complies with the safety with electricity requirements.

• The electrical circuit servicing the chassis complies with the power supply requirements.

• Console port wiring and cabling limitations have been considered in accordance to TIA/EIA-232F.

• The chassis Ethernet cabling distances are within prescribed limits.

• The equipment rack where the chassis is to be installed complies with prescribed requirements.

• The following factors have been carefully considered when selecting rack: location, safety, ease of maintenance, and proper airflow.

Environmental monitoring of the chassis protects the system and components from damage due to excessive voltage and temperature conditions. To ensure normal operation and avoid unnecessary maintenance, plan and prepare your site configuration before installation. After installation, ensure that the environmental characteristics continue to be met.

For an outside plant installation (cell site cabinet, hut, and so on), you’re required to protect the chassis against airborne contaminants, dust, moisture, insects, pests, corrosive gases, polluted air, or other reactive elements. We recommend that you install the unit in a fully sealed enclosure or cabinet. Examples of such cabinets include IP65 cabinets with heat exchanger complying with Telcordia GR487. Temperature must be maintained within –40ºC to 65ºC. This is applicable to Cisco N540X-6Z18G-SYS-A/D, N540X-8Z16G-SYS-A/D, and N540X-4Z14G2Q-A/D router variants.

Cisco N540-6Z18G-SYS-A/D router supports operational temperature of 0 to 50ºC.

Place the device inside a space that is protected from direct weather and environmental stresses by an enclosure.

Cool air is circulated through the router by fans that are located along the left side of the router. The internal fans maintain acceptable operating temperatures for the internal components by drawing in cool air through the vents, and circulating the air through the router.

To ensure adequate airflow, we recommend that you always maintain this minimum clearance distance as mentioned in the following figure.

• Front clearance—5 inches (12.7 centimeters)

• Rear clearance—0.5 inches (1.27 centimeters)

• Side clearance—3 inches (7.62 centimeters)

Note the following points:

• When installing the router in a back-to-back position with another device, ensure that there is a minimum of 3.9 inches (10 centimeters) airflow clearance between the two devices.

• If airflow through the equipment rack and the routers that occupy it is blocked or restricted, or if the ambient air being drawn into the rack is too warm, an overtemperature condition may occur within the rack and the routers that occupy it.

• The site must be as dust-free as possible. Dust tends to clog the router fans, reducing the flow of cooling air through the equipment rack and the routers that occupy it, thereby increasing the risk of an overtemperature condition.

• Enclosed racks must have adequate ventilation. Ensure that the rack is not congested because each router generates heat. An enclosed rack must have louvered sides and a fan to provide cooling air. The equipment generates heat near the bottom of the rack, which can be drawn upward into the intake ports of the equipment above.

• When mounting a router in an open rack, ensure that the rack frame does not block the exhaust fans.

• When rack-installed equipment fails, especially equipment in an enclosed rack, try operating the equipment by itself, if possible. Power off all the other equipment in the rack (and in adjacent racks) to give the router maximum cooling air and clean power.

• Avoid installing the router in a location in which the router air intake vents may draw in the exhaust air from adjacent equipment. Consider how the air flows through the router; the airflow direction is front to back, with ambient air drawn in from the vents located on the sides of the router.

The chassis has specific power and electrical wiring requirements. Adhering to these requirements ensures the reliable operation of the system. Follow these precautions and recommendations when planning your site power for the chassis:

• The redundant power option provides a second, identical power supply to ensure uninterrupted power supply.

• Connect each power supply to a separate input power source. Otherwise, it results in a total power failure to the system due to a fault in the external wiring or a tripped circuit breaker.

• To prevent loss of input power, ensure that the maximum load on each circuit is within the current ratings of the wiring and the breakers.

• Check the power at your site before installation, and periodically after installation, to ensure that you are receiving clean power. If necessary, install a power conditioner.

• Provide proper grounding to avoid personal injury and damage to the equipment due to power surges or lightning striking power lines. The chassis ground must be attached to a central office or other interior ground system.

Note	Cisco N540-6Z18G-SYS-A/D router has single power supply unit.

Warning

Statement 1045—Short-Circuit Protection This product requires short-circuit (overcurrent) protection to be provided as part of the building installation. Install only in accordance with national and local wiring regulations.

Caution

The router requires external surge protection devices for installations where electrical surges higher than 4KV common mode and 2KV differential mode are expected. Failure to do so can result in permanent damage to the router. For Cisco N540-6Z18G-SYS-A/D router, 2KV common mode and 1KV differential modes are supported.

Note

The chassis installation must comply with all the applicable codes, and is approved for use with only copper conductors. The ground bond-fastening hardware must be compatible and preclude loosening, deterioration, and electrochemical corrosion of hardware and joined material. Attachment of the chassis ground to a central office or other interior ground system must be made with a 6-AWG gauge wire copper ground conductor.

This section contains guidelines for wiring and cabling at your site. When preparing your site for network connections to the router, consider the type of cable required for each component, and the cable limitations. Consider the distance limitations for signaling, ElectroMagnetic Interference (EMI), and connector compatibility. Possible cable types are fiber, thick or thin coaxial, foil twisted-pair, or unshielded twisted-pair cabling.

Also consider any additional interface equipment you need, such as transceivers, hubs, switches, modems, Channel Service Units (CSU), or Data Service Units (DSU).

Before you install the router, have all the additional external equipment and cables on hand. For information about ordering, contact a Cisco customer service representative.

The extent of your network and the distances between the network interface connections depend, in part, on the following factors:

• Signal type

• Signal speed

• Transmission medium

The distance and rate limits referenced in the following sections are the IEEE-recommended maximum speeds and distances for signaling purposes. Use this information as a guideline when planning your network connections prior to installing the router.

If wires exceed the recommended distances, or if wires pass between buildings, give special consideration to the effect of a lightning strike in your vicinity. The electromagnetic pulse caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices. If you have had problems of this sort in the past, you may want to consult experts in electrical surge suppression and shielding.

You need the following tools and equipment to install and upgrade the device and its components:

• ESD-preventive cord and wrist strap

• Antistatic mat or antistatic foam

• Number 1 and Number 2 Phillips-head screwdrivers

• #12-24 pan-head screws to secure the device to the equipment rack

• Cables for connecting to network ports (based on the configuration)

• Ethernet hub, switch, or PC with a network interface card for connecting to the Ethernet ports

• Console terminal that is configured for 115200 baud, 8 data bits, no parity, no flow control, and 2 stop bits

• Console cable for connecting to the console port

• Ratcheting torque screwdriver with a Phillips head that exerts up to 30-pound force per square inch (0.02-kilograms force per square millimeter (kgf/mm2)) of pressure

• Crimping tool as specified by the ground lug manufacturer

• Wire-stripping tools for stripping both 6 and 14-AWG wires

• Tape measure and level

• Ratcheting torque screwdriver with a Phillips head that exerts up to 15 inch-pounds (1.69 newton meters) of torque for attaching the ground wire to the device

This section illustrates how the building that houses the chassis must be properly grounded to the earth ground.

This section illustrates how to prepare yourself before removing the chassis from the sealed antistatic bag. The figures show how to wear the ESD strap around the wrist and how to connect the other end of the strap to the ground. ESD wrist straps are the primary means of controlling static charge on personnel.

Note: These images are for only representation purposes. The chassis' actual appearance and size would vary.

Equipment that is intended for installation in controlled environmental space has average yearly levels of contamination. Ventilated cabinets or racks can be used if pollutant levels are maintained within allowable limits.

Equipment intended for installation in outside plant (OSP) areas must have sealed cabinets with heat exchanger that meet the NEMA -4 or IP66 protection and low average yearly levels of concentration of contaminants inside the cabinet.

Note	Ventilated cabinets and racks are not recommended for OSP applications.

Allowable limits for Environmental Pollutants

Concentration of pollutant levels in outdoor and indoor environment must be less than pollutant levels mentioned in Table 2.3 and Table 2.4 of NEBS GR-63-CORE Issue 5 Dec 2017, respectively. High concentrations of pollutants have a negative impact on the equipment life time.

Allowable Temperature and Humidity

Maximum allowable temperature and humidity levels must be within the values that are mentioned in the data sheets. Do not install in places where condensation may occur, or where equipment is exposed to high humidity for long time, such as near the sea, rivers, and large water bodies.

Installations in Highly-corrosive Environment

Installation in highly corrosive areas is not recommend. Examples of highly corrosive area are seashore, less than 10 meters from high traffics roadway, and areas having high industrial pollutants.

Periodic Measurement of Environmental Pollutants

We recommend that you check concentration of pollutants periodically. Necessary protection should be provided to ensure the equipment is not exposed to high concentration level of pollutants.

Ensure that there is sufficient room around the chassis pallet for unpacking.

1. Remove the accessory tray and the packing material.

2. Carefully set the packing material aside.

   Tip	Be sure to save the packaging in case you need to return any of the components products.

   Note	These images are for only representation purposes. The chassis' actual appearance and size would vary.

   

   1	Regular Slotted Container (shipping box)	2	Foam end caps
   3	Front corrugated cap	4	Front end of the product
   5	Back end of the product	6	Accessory tray

The Cisco N540X-6Z18G-SYS-A/D, N540X-8Z16G-SYS-A/D, N540X-4Z14G2Q-A/D, and N540-6Z18G-SYS-A/D router variants include the following accessories kit.

Note	Most Cisco documentation is available online. The chassis Pointer Card that is shipped with your Cisco NCS 500 Series Services Routers contains links and information to other online documentation.

Note	If the product is not in use, store the device in the initial packaged condition or in an ESD PE sealed bag with silica gel.