Installation Manual
2. Preparation before Installation
12
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Direct or indirect touch through a wet object on high-voltage and mains supply can bring a
fatal danger.
2.1.4
Electrostatic Discharge Damage Precautions
The QSW-6900-56LF designing gives a great consideration to prevent electrostatic discharge
damage and adopts multiple measures. But if the electrostatic exceeds certain limit, it can still
cause great damages to the circuitry and the device. In networks connected by the QSW-6900-
56LF, the major sources of electrostatic induction are outdoor high voltage transmission cables,
lightening, indoor floor materials and the machine structure.
Pay attention to the following tips:
❖
The device and the floor are well grounded.
❖
Take dust prevention measures in the room.
❖
Maintain an appropriate humidity.
❖
When the pluggable modules of the switch are being installed, wear antistatic wrist strap
and make sure the antistatic wrist strap is well grounded.
❖
Do not use bare hand to directly touch the components and the printed-circuit board (PCB)
when the boards are used.
❖
Use an anti-static shielding bag to properly store the board.
❖
Do not let any clothes touch a circuit board. An antistatic wrist strap can only prevent human
static electricity from damaging the circuit board, but cannot prevent any static electricity
on clothes.
2.1.5
Laser Safety
Among the modules supported by the QSW-6900-56LF, there are a great number of optical
modules that are Class
I
laser product.
Precautions:
❖
When a fiber transceiver works, ensure that the port has been connected with a fiber or has
been covered by a dust cap so as to keep out dust and prevent it from burning your eyes.
❖
Do not stare at any fiber port.
Do not stare at any fiber port under any circumstances, as this may cause permanent damage
to your eyes.
2.2
Installation Site Requirements
Install the QSW-6900-56LF indoor. To ensure normal operation and a prolonged service life of
the device, the installation site must meet the following requirements.
2.2.1
Rack Mounting Requirements
Make sure the cabinet complies with the following conditions if the QSW-6900-56LF is installed
in the cabinet:
❖
Install the switch in an open cabinet as much as possible. If you install the switch inside a
closed cabinet, be sure that the cabinet has a good ventilation and heat dissipation system.
