Login
- Table of Contents
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 01-Preparing for installation | 177.22 KB |
1 Preparing for installation
Safety recommendations
To avoid any equipment damage or bodily injury, read the following safety recommendations before installation. Note that the recommendations do not cover every possible hazardous condition.
General safety recommendations
· Make sure the installation site is flat, vibration-free, and away from electromagnetic interferences, and ESD-prevention and anti-slip measures are in place.
· Do not place the device on an unstable case or desk. The device might be severely damaged in case of a fall.
· Keep the chassis and installation tools away from walk areas.
· Keep the chassis clean and dust-free.
· Do not place the device near water or in a damp environment. Prevent water or moisture from entering the device chassis.
· Remove all cables from the device before moving it.
· Ensure good ventilation of the equipment room and make the air inlet and outlet vents of the device are not blocked.
· Make sure the power voltage for the device is in the acceptable range.
· Use a screwdriver to fasten screws.
· After you move the device from a location below 0°C (32°F) to the equipment room, wait a minimum of half an hour before unpacking the device and a minimum of 2 hours before powering on the device.
Electricity safety
· Carefully examine your work area for possible hazards, such as moist floors, ungrounded power sources, or missing safety grounds.
· Locate the emergency power-off switch in the room before installation. Shut off the power immediately if an accident occurs. Remove the power cord if necessary.
· Do not work alone when you operate the device with power on.
· Always verify that the power has been disconnected when you perform operations that require the device to be powered off.
Laser safety
|
|
WARNING! · Do not stare into any disconnected optical fiber or fiber port. The laser light emitted from the optical fiber or fiber port might hurt your eyes. · Before you remove the fiber connector from a fiber port, execute the shutdown command in interface view to shut down the port. |
|
|
CAUTION: Insert a dust plug in any open fiber port, fiber connector, or transceiver module port to protect them from contamination and ESD damage. |
Examining the installation site
The device can only be used indoors. For the device to operate correctly and have a prolonged service time, the installation site must meet the following requirements.
Temperature and humidity
Make sure the temperature and humidity in the equipment room meet the requirements described in Table1-1.
· Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical property change of materials, and metal corrosion.
· Lasting low relative humidity can cause washer contraction and ESD and cause problems including loose mounting screws and circuit failure.
· High temperature can accelerate the aging of insulation materials and significantly lower the reliability and lifespan of the device.
Table1-1 Temperature and humidity requirements for the equipment room
|
Temperature |
Humidity |
|
0°C to 40°C (32°F to 104°F) |
5% to 95% (noncondensing) |
Cleanliness
Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of metal components and contact points, especially when indoor relative humidity is low. In the worst case, electrostatic adsorption can cause communication failure.
Table1-2 Dust concentration limit in the equipment room
|
Substance |
Concentration limit (particles/m3) |
|
Dust particles |
≤ 3 x 104 (No visible dust on desk in three days) |
|
NOTE: Dust particle diameter ≥ 5 µm |
|
The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table1-3.
Table1-3 Harmful gas limits in the equipment room
|
Gas |
Max. (mg/m3) |
|
SO2 |
0.2 |
|
H2S |
0.006 |
|
NH3 |
0.05 |
|
Cl2 |
0.01 |
|
NO2 |
0.04 |
Cooling
· Leave a minimum of 10 cm (3.94 in) of clearance around the chassis for heat dissipation.
· Make sure a good ventilation system is available at the installation site.
ESD prevention
To prevent electrostatic discharge (ESD), follow these guidelines:
· Make sure the device is reliably grounded.
· Take dust-proof measures for the equipment room.
· Maintain the humidity and temperature in the equipment room at the acceptable range.
· Always wear ESD gloves and ESD garment and remove conductive objects such as jewelry or watch before working with the device.
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the device and application system, adversely affect the device in the following ways:
· A conduction pattern of capacitance coupling.
· Inductance coupling.
· Electromagnetic wave radiation.
· Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
· Take effective measures to filter interference from the power grid.
· Keep the device far away from radio transmitting stations, radar stations, and high-frequency devices.
· Use electromagnetic shielding, for example, shielded interface cables, when necessary.
· To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning strikes, route interface cables only indoors.
Lightning protection
To enhance lightning protection for the device, follow these guidelines:
· Make sure the device is reliably grounded.
· Make sure the AC power outlet is reliably grounded.
· Install a surge protected power strip at the power input end.
Installation accessories
Table1-4 Installation accessories
|
|
|
|
|
|
Mounting brackets |
Console cable |
Power cord |
Grounding cable |
|
|
|
|
|
|
Cage nut (user supplied) |
M6 screw |
M4 screw |
Rubber feet |
Pre-installation checklist
Table1-5 Pre-installation checklist
|
Item |
Requirements |
Result |
|
|
Installation site |
Ventilation |
· A minimum clearance of 10 cm (3.9 in) is reserved around the chassis. · The installation site has a good ventilation system. |
|
|
Temperature |
0°C to 40°C (32°F to 104°F) |
|
|
|
Relative humidity |
5% to 95% (noncondensing). |
|
|
|
Cleanliness |
· Dust concentration ≤ 3 x 104 particles/m3. · No visible dust on desk within three days. |
|
|
|
ESD prevention |
· The device is reliably grounded. · Dust-proof measures are taken in the equipment room. · Humidity and temperature are maintained at the acceptable range. |
|
|
|
EMI prevention |
· Effective measures are taken for filtering interference from the power grid. · The protection ground of the device is away from the grounding facility of power equipment or lightning protection grounding facility. · The device is far away from radio transmitting stations, radar stations, and high-frequency devices. · Electromagnetic shielding, for example, shielded interface cables, is used as required. |
|
|
|
Lightning protection |
· The device is reliably grounded. · The AC power source is reliably grounded. |
|
|
|
Electricity safety |
· A UPS is available. · The power-off switch in the equipment room is identified and accessible so that the power can be immediately shut off when an accident occurs. |
|
|
|
Safety precautions |
The device is far away from any sources of heat or moisture. |
|
|
|
Accessories |
Installation accessories supplied with the device are available. |
|
|
|
Reference |
· Documents shipped with the device are available. · Online documents are available. |
|
|
