Preparing for installation

The following diccusses the considering cases of router istallation,includes two sections:

Safety notice

Ensure safety as the following principals

Safety warnings

Safety principal of operation with electricity

Preventing electrostatic discharge damage

Gertneral site Requirement

Site environment

Preventive site configuration

Rack configuration

Power supply considerations

Please continre to read "Router Installation" after reading this section.

 

Safety notice

Ensure safety as the following principals

1.         Keep the chassis ares clear and dust-free during and after installation£»

2.       Put the cover in a safe place;

3.        Put the tools away from walk areas where you and others could fall over them£»

4.        Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll up your sleeves.

5.       If the working environment could cause damage to your eyes, wear protection glasses;

6.        Do not do anything that causes damage to human or device.

  

Safety warnings

1.        Please follow the instructions below. Any mal-operation could cause damage to human;

2.        Read the installing instruction carefully before operating the system;

3.       Only qualified mechanics are allowed to install or replace the switch;

4.        Before working on a chassis or working near power supplies,unplug the power cord om AC units;disconnect the power at the circiut breaker on DC units.

5.        Unplug AC plug and disconnect DC connection before working on the case or near the power supply.

6.       Ultimate  configuration of this product must follow all applicable national laws and regulations.

 

Safety principal of operation with electricity

1.        Follow these guidelines when working oon equipment powered by electricity.

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

3.       Before working on a chassis or working near power suppliees,unplug the power cord on AC units,disconnect the power at the circiut breaker on DC units.

4.        Do not touch the power supply when the power cord is connected .

5.        Incorrect connection of this or connected equipment to a general purpose outlet could result in a hazardous situation.

7.        Read the installation instructions carefully before you connect the system to its power source.

Note£º

1.        Look carefully for possible hazards in your working area, such as moist floors,ungrounded power extension cable ,frayed ppower cord.

2.        Locate the emergency power off switch for the room in which you are working .Then ,if an elecrtical accident occurs ,you can act quikly to turn off the power.

3.       Power off the router and unplug the power cord before doing the following:

    ---Installing or removing the chassis

    ---Working near power supply

4.        Do not work alone if potentially hazardous condition exists.

5.       Never assume that power is disconnected from a circiut.Always check.

6.        If an accident occurs ,proceed as folllows:

A.       Turn OFF power to the system

B.       Use caution

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

D.       If possible ,send onather person to get medical aids.Otherwise ,assess the condition of the victim and then call for help.

Preventing electrostatic discharge damage

Electrostatic discharge can damage equipment and impair electricall circiutry .It occurs when electronic components are improperly handled and can result in complete or intermittent failures.

Always follow electrostatic discharge  prevention procedures when removing and replacing components.Ensure that the chassis is electrically connected to earth grouond .Wear an ESD-preventive wrist strap,ensuring that it makes good skin contact .Conect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground.To properly guard against ESD damage and shoaks,the wrist strap and cord must be used effectively.If no wrist strap is available, ground yourself by touching the metal part of the chassis.

 

General site requirements

This section describes the requirements your site must meet for safe installation and operation of your system .Ensure that your site is properly prepared before beginning installation.

Site environment

The router can be placed on a desktop or mounted in a rack.The location of the chassis and the layout of your equipment rack or wiring room are extremely important for for proper system operation.Placing euipment too close togather ,inadiquate ventilation,and inaccessible panels can make system maintinace or cause system malfunctions and shutdown.

When planning your site layout and equipment loations, remamber the precautions described in the next section ,"Preventive Site Configuration" .If you are experiencing shutdowns or unusually high errors with your exsting equipment, this precautions might help you isolate the cause of failures and prevent future problemss.

Preventive site configuration

The following precautions will help you plan an acceptable operating environment for you router and help you avoid environmentally-cauesd equipment failures:

1.  Ensure that the room in which you operate your system has adequate air circulation .Electrical euqipment generates heat .Ambient air temperature might not be able to cool equipment to acceptable opoerating temperatures without adequate circiulation.

2.  Always follow the EDS-prevention procedures to avoid damage  to equipment .Damage from static discharge can cause immediate or intermittent equipment failure.

3.  The chaissis is designed to allow cooling air to flow  effectively inside it .An open chassis allows allows air leaks ,which might interrupt and redirect the flow of cooling air from internal components.

Configuring Equipment rack

The following information will help you plan an acceptable equipment rack configuration.

1. The equipment in the rack will heat when working.So enclosed racks must have adequate ventilation.The equipment should not be put too close to each other to ensure the racks are not overheat.

2.  When mounting  a chassis in an open rack ensure that the rack frame does not lock the intake or or the exhaust ports.So check the position of the chassis when it is seated all the way into the rack.

3.  Ensure that you provide adequate ventilation for equipment at the bottom of rack.

4.  Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through the chassis .The best placement of the chassis on the airflaw in the rack ,which and be found by experimenting with different arrangement.

Power supply condition

Check the power at you site to ensure that you are reaieving "claen" power.Install a power conditioner if neccesary.nsure that a fuse or circiut breaker no larger than 240V,10A interminal is used on the phase conductors.£¬

Warning£º

If the power system does not connect to the earth properly , the variables of input power is big or exist excess pulse,it will add error ratio of communication equipment ,even to damage the hardware system.