Temperature And Humidity Requirements; Cleanness Requirements - D-Link DES-7200 Hardware Installation Manual

2.2.3 Temperature and Humidity
Requirements
To ensure the normal working and a prolonged useful life of the DES-7210/7206, appropriate
temperature and humidity must be maintained in the equipment room.
If the equipment room has temperature and humidity that do not meet the requirements for a
long time, the equipment may be damaged.
In an en vironment w ith h igh r elative h umidity, t he i nsulating m aterial m ay have bad

insulation or even leak electricity, and sometimes the materials may suffer from
mechanical performance change and metallic parts may get rusted.
On the other hand, in an environment with low relative humidity, the insulating strip may

dry and shrink, and static electricity may occur easily and endanger the circuit on the
equipment.
In an environment with high temperature, the equipment is subjected to even greater

harm, as its performance may degrade significantly and its useful life may be shortened
in the case of long-term exposure that expedites the aging process.
Therefore, t he am bient t emperature and humidity of t he DES-7210/7206 equipment must
meet the requirements listed in Table 2-1:
Table 2-1 Temperature and Humidity Requirements of the DES-7210/7206
Temperature
Long-term condition
0ºC-45ºC
Note
2.2.4

Cleanness Requirements

Dust pos es t he t op t hreat to t he r unning of t he eq uipment. The i ndoor dus t falling on t he
equipment may be adhered by the static electricity, causing bad contact of the metallic joint.
Such electrostatic adherence may occur more easily when the relative humidity is low, not
only affecting the useful life of the equipment, but also causing communication faults. Table
2-2 shows the requirements for the dust content and granularity in the equipment room.
Table 2-2 Requirements for the Dust content and Granularity in the Equipment Room
Maximum diameter (ìm)
Max. density (Particles/m
Note
2-6
Short-term condition
0ºC-45ºC
1. The ambient temperature and humidity are measured at the point that
is 1.5m above the floor and 0.4m before the equipment when there is
no protective plate in front or back of the equipment rack.
2. The short-term working condition applies where the continuous
working period does not exceed 48 hours and the accumulative total
period within a year does not exceed 15 days.
0.5
7
3 1.4 x 10
)
The ai r f ilter of t he DES-7210 must b e c leaned at r egular i ntervals t o
ensure good ventilation and dust prevention.
DES-7200 Hardware Installation Guide
Relative Humidity
Long-term condition
40%-65%
1 3
5
7 x 10 2.4 x 10
Short-term condition
10%-90%
5
5 5
1.3 x 10