Accton Technology ES4710BD - Manual (Page 57)

56
E ES4710BD 10 Slots L2/L3/L4 Chassis Switch
Temperature: Relative humidity
Long term condition Short term condition Long term condition Short term condition
15 ~ 30°C 0 ~ 40°C 40～65% 10～90%
A sample of ambient temperature and humidity should be taken at 1.5m above the floor and 0.4m in
front of the switch rack, with no protective panel covering the front and rear of the rack.
Short term working conditions refer to a maximum of 48 hours of continued operation and an
annual cumulative total of less than 15 days.
Formidable operation conditions refers to the ambient temperature and relative humidity value that
may occur during an air-conditioning system failure, and normal operation conditions should be
recovered within 5 hours.
2.1.3 Dust and Particles
Dust is harmful to the safe operation of the ES4710BD. Dust can lead to electrostatic adherence,
especially likely under low relative humidity, causing poor contact of metal connectors or contacts.
Electrostatic adherence will result in not only reduced product lifespan, but also increased chance of
communication failures. The recommended values for dust content and particle diameter in the site
are shown below:
Max. Diameter (µm) 0.5 1 3 5
Max. Density
(particles/m³)
1.4Ч10
7
7Ч10
5
2.4Ч10
5
1.3Ч10
5
In addition, salt, acid and sulfide in the air are also harmful to the switch. Such harmful gases will
aggravate metal corrosion and the aging of some parts. The chosen site should avoid harmful gases,
such as SO
2
, H
2
S, NO
2
, NH
3
and Cl
2
, etc. The table below details the threshold values.
Gas Average (mg/m³) Max (mg/m³)
SO
2
0.2 1.5
H
2
S 0.006 0.03
NO
2
0.04 0.15
NH
3
0.05 0.15
Cl
2
0.01 0.3
Notice