Space Requirements; Temperature And Humidity Requirements; Cleanliness Requirements - Ruijie RG-SAP845-SP Hardware Installation And Reference Manual

Hardware Installation and Reference Guide

Space Requirements

2.2.3
To facilitate heat dissipation and maintenance of the device, do not install the device against the wall.
Leave a certain space (not less than 0.4 m) for the left and right panels to facilitate heat dissipation.

Temperature and Humidity Requirements

2.2.4
To ensure the normal operating of the device and prolong its service life, maintain certain temperature
and humidity in the equipment room.
If the equipment room is in the environment that does not meet the temperature/humidity requirements
for a long time, the device may be damaged.
When the relative humidity is too high, it is easy to cause poor insulation of insulating materials and

even mechanical properties such as leakage.
When the relative humidity is too low, the insulating washer may dry out and cause loosening of the

fastening screws.
In dry environment, it is easy to generate static electricity and harm the internal circuit of the device.

In the high-temperature environment, the aging process of insulating materials will be accelerated,

the reliability of the device will be greatly reduced, and its service life will be seriously affected.
Note
The temperature and humidity of the working environment of the device are measured at 1.5 m above
the floor and 0.4 m in front of the device rack when there is no protective plate before and after the rack.

Cleanliness Requirements

2.2.5
Dust is a major hazard to device operating. Indoor dust falling on the device body will cause electrostatic
adsorption and poor contact of metal contacts. Especially when the indoor relative humidity is low, it is
more likely to cause electrostatic adsorption, which will not only affect the service life of the device, but
also cause communication failures. The dust content and granule size requirements in the equipment
room are as follows:
Dust requirements
Table 2-1
Dust
Dust granule (diameter ≤ 0.5 um)
Dust granule (0.5 um < diameter ≤ 1
um)
Unit
Number of
granules/m³
Number of
granules/m³
13
Installation Preparation
Content
≤ 1.4 x 10^7
≤ 7 x 10^5