Ruijie Networks RG-N18010, Hardware Installation And Reference Manual

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 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.
Humidity Requirements of the RG-N18000
Operating Humidity Storage Humidity
10% to 90% (non-condensing) 5% to 95% (non-condensing)
The ambient humidity is 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.
Cleanness Requirements
Dust poses the top threat to the running of the equipment. The indoor dust falling on the 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 use life of the equipment, but also causing communication faults. The
following table shows the requirements for the dust content and granularity in the equipment room.
Substance Concentration Limit (particles/m
3
)
Dust particles (diameter ≥ 0.5 μ m) ≤ 3.5 × 10
6
Dust particles (diameter ≥ 5 μ m) ≤ 3 × 10
4
The air filter of the RG-N18010/N18014 must be cleaned at interval to ensure good ventilation and dust
prevention.
Apart from dust, the salt, acid and sulfide in the air in the equipment room must also meet strict requirements; as such
poisonous substances may accelerate the corrosion of the metal and the aging of some parts. The equipment room
should be protected from the intrusion of harmful gases (for example, SO
2
, H
2
S, NO
2
and Cl
2
), whose requirements are
listed in the following table.
Gas Average (mg/m
3
) Maximum (mg/m
3
)
SO
2
0.3 1.0
H
2
S 0.1 0.5
NO
2
0.5 1. 0
Cl
2
0.1 0.3
The
Average
refers to the average limit of harmful gas in one week. The
Maximum
value is the upper limit of
the harmful gas measured in one week for up to 30 minutes every day.
Dusting Cycle Suggestions:
1. Clean the air filters every three months.
2. Dust the air intakes and exhaust vents of all modules every three months.
3. Dust the modules every one or two years.
4. Dust the fan shelves yearly.
5. Dust the chassis, including the backboard, every one or two years.
If the device is in a poor dust prevention environment, please increase the dusting times.