Справочник Пользователя для Juniper Networks 5000 SERIES

Chapter 2 Installing the Device

14

User’s Guide

G

ENERAL

 I

NSTALLATION

 G

UIDELINES

Observing the following precautions can prevent injuries, equipment failures, and 
shutdowns.

Never assume that the power supply is disconnected from a power source. 
Always check first.

Room temperature might not be sufficient to keep equipment at acceptable 
temperatures without an additional circulation system. Ensure that the room in 
which you operate the NetScreen-5000 Series has adequate air circulation.

Do not work alone if potentially hazardous conditions exist.

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

E

QUIPMENT

 R

ACK

 I

NSTALLATION

 G

UIDELINES

The location of the chassis and the layout of your equipment rack or wiring room are 
crucial for proper system operation.

Use the following guidelines while configuring your equipment rack.

Enclosed racks must have adequate ventilation. An enclosed rack should have 
louvered sides and a fan to provide cooling air.

When mounting a chassis in an open rack, ensure that the rack frame does not 
block the intake or exhaust ports. If you install the chassis on slides, check the 
position of the chassis when it is seated all the way into the rack.

In an enclosed rack with a ventilation fan in the top, equipment higher in the 
rack can draw heat from the lower devices. Always provide adequate ventilation 
for equipment at the bottom of the rack.

Baffles can isolate exhaust air from intake air. The best placement of the baffles 
depends on the airflow patterns in the rack.

You can mount the device in a standard 19-inch equipment rack. Rack mounting requires 
the following tools:

1 Phillips-head screwdriver

Rack-compatible screws 

The included rear slide kit (for the rear and front mount method) on the 
NetScreen-5200

Front-mount brackets