48-Port Gigabit Ethernet PoE+ Managed Switch with Four 10G SFP+ Uplinks
User Manual
11
2.1.5
Fiber Use Safety
Notes:
When a fiber transceiver is in use, ensure that the port is connected with an optical fiber
cable or is covered with a dust cap to keep out dust and avoid harm to your eyes.
When the optical module is in use, do not pull out the fiber cable and stare into the
transceiver interface or you may harm your eyes.
Do not stare into any active optical port under any circumstance, as this may cause permanent
damage to your eyes.
2.2
Installation Site Requirements
This Switch must be used indoors. The installation site must meet the following requirements to
ensure the normal working order of the equipment and for extended service life.
2.2.1
Ventilation Requirement
Ensure that a minimum of 10 cm (4 in.) of clearance on the sides and back panel of the switch is
reserved at the ventilation openings to ensure the normal ventilation. Prevent cables from
blocking the air intake.
2.2.2
Temperature and Humidity Requirements
To ensure the normal work and service life of the equipment, temperature and humidity must be
maintained at the installation site. If the environment does not meet the temperature and
humidity requirements of the switch for an extended period of time, the equipment will be
damaged.
In an environment with high relative humidity, the insulating material may have bad
insulation or have poor power efficiency. The switch materials may suffer degradation in
mechanical performance and metallic parts may get rusted.
In an environment with low relative humidity, however, the insulating strip may dry and
shrink. Static electricity may occur easily and endanger the circuit on the equipment.
High-temperature environments can greatly reduce the reliability of the equipment, even
in the short term; long-term high temperature will also affect the life and accelerate the
aging process of the product.
The requirements for the sampling site of the temperature and humidity in the operating
environment of the device are as follows:
There is no protective plate at the front or back of the equipment rack.
The vertical height is 1.5 (4.9 ft.) m above the floor.
The distance from the front panel of the equipment is 0.4 m (1.3 ft.).
2.2.3
Cleanliness Requirements
Dust poses a severe threat to the running of the equipment. The indoor dust falling on the
equipment may be adhered by 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.
Temperature
Relative Humidity
0 – 45°C (32 – 113°F)
10% to 90% RH (non-condensing)
