Canoga-perkins 9171 Metro Ethernet Routing Switch Manual de usuario descargar pdf (Pagina 7)

9171 Installation Guide

Proprietary & Confidential

Canoga Perkins Metro Ethernet Routing Switch

Page

To ensure switches maintain a long

term stable work, the installation workplace should also meet the

following requirements:

2.1.3

Temperature/Humidity Requirements

To ensure the normal work and service life of switches, certain temp

erature and humidity should be

maintained inside switch rooms. Longtime higher humidity inside switch rooms may easily lead to poor

insulation or even electric leakage of dielectrics, and sometimes cause material changes in mechanical

features and corrosio

n of metal parts; if the relative humidity is lower, insulation pads could dry shrink to make

fastening screws loose. Meanwhile, in the dry climate, lower relative humidity could easily cause static

electricity which will impose harms to the circuit of swi

tch; higher temperature would be even more harmful:

longtime high temperature would accelerate aging process of insulation materials to greatly reduce the

reliability of switches and severely affect their service life.

Table 2

Temperature/Humidity Requ

irements

2.1.4

Cleanliness Requirements:

Dust is a big hazard to the safe operation of switches. Indoor dust falling on the switch body can cause

electrostatic adsorption to make poor contact of metal

connectors or metal contacts. Especially when the

indoor relative humidity is lower, electrostatic adsorption is easily formed, which will not only affect equipment

service life, but also easily lead to communication failure.

Table 2

2: Dust Content Requir

ements in Switch Room

Substance

Unit

Concentration limit

DUST

Particle/m3

≤ 3 X 104 (No visible dust on the tabletop for three days)

Note: The dust particle size is

≥ 5

μm

Besides dust, there are rigorous limits on the content of harmful substances that can accelerate the

corrosion and aging of metals, such as salts, acids, a

nd sulfides in the air in the equipment room, and the

equipment room must be protected against ingression of harmful gases such as SO2, H2S, NH3, and

Item

9171 Series

Temperature

～

Humidity

10%

～

95%

1 2 3 4 5 6 7 8 9 10 11 12 ... 25 26

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