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| Title | Size | Download |
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| 01-Preparing for installation | 173.23 KB |
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
· Do not place the device on an unstable case or desk. The device might be severely damaged in case of a fall.
· Make sure the ground is dry and flat and anti-slip measures are in place.
· 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.
· Ensure good ventilation of the equipment room and keep the air inlet and outlet vents of the device free of obstruction.
· Make sure the device operates in the voltage range as required.
· Use a screwdriver to fasten screws.
· To prevent condensation, perform the following tasks:
¡ Unpack the device a minimum of half an hour after you move the device from a location below 0°C (32°F) to the equipment room.
¡ Power on the device a minimum of 2 hours after you move the device from a location below 0°C (32°F) to the equipment room.
Electrical safety
· Carefully examine your work area for possible hazards, such as moist floors, ungrounded power extension cables, or missing safety grounds.
· Locate the emergency power-off switch in the room before installation. Shut off the power immediately if an accident occurs.
· Unplug all the external cables (including power cables) before moving the chassis.
· Do not work alone when the device has power.
· Always check that the power has been disconnected.
Laser safety
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WARNING! Do not stare into any fiber port when the device is powered on. The laser light emitted from the fiber port might hurt your eyes. |
· Before you disconnect a fiber connector, execute the shutdown command in interface view to disable the optical source.
· After you remove an optical fiber from the connector, install the dust cover on the connector to avoid connector damage.
Examining the installation site
The device can only be used indoors. To ensure normal operation and a long lifespan for your device, the installation site must meet the requirements in this section.
Temperature and humidity
Maintain the temperature and humidity in the equipment room at acceptable levels.
· Lasting high relative humidity can cause poor insulation, electricity creepage, mechanical property change of materials, and metal corrosion.
· Lasting low relative humidity can cause washer contraction and ESD and cause problems including loose screws and circuit failure.
· High temperature can accelerate the aging of insulation materials and significantly lower the reliability and lifespan of the switch.
To ensure correct operation of the device, the equipment room must meet the temperature and humidity requirements listed in Table 1.
Table 1 Temperature/humidity requirements in the equipment room
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Temperature |
Relative humidity |
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0°C to 40°C (32°F to 104°F) |
5% to 95%, noncondensing |
Cleanliness
Dust buildup on the chassis can 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.
Table 2 Dust concentration limit in the equipment room
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Substance |
Concentration limit (particles/m3) |
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Dust particles |
≤ 3 x 104 (No visible dust on desk in three days) |
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NOTE: Dust particle diameter ≥ 5 µm |
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The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table 3.
Table 3 Harmful gas limits in the equipment room
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Gas |
Max. (mg/m3) |
|
SO2 |
0.2 |
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H2S |
0.006 |
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NH3 |
0.05 |
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Cl2 |
0.01 |
Cooling
· Leave a minimum of 10 cm (3.94 in) of clearance around the device.
· A good ventilation system is available at the installation site.
ESD prevention
The device might be damaged by the following Electrostatic discharge (ESD) sources:
· Outdoor environment—For example, high-voltage power line and lightning.
· Indoor environment—For example, floor carpet.
· Device internal system.
To prevent ESD damage, follow these guidelines:
· Ground the device reliably.
· Take dust-proof measures for the equipment room. For more information, see "Cleanliness."
· Maintain the humidity and temperature at acceptable levels. For more information, see "Temperature and humidity."
· Wear an ESD suit and an ESD wrist strap, wear ESD gloves, and remove any electrically conducting objects such as watch or jewelry before handling the device.
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the switch and application system, adversely affect the switch 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, perform the following tasks:
· If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to filter interference from the power grid.
· Keep the switch far away from radio transmitting stations, radar stations, and high-frequency devices.
· Use electromagnetic shielding, for example, shielded interface cables, when necessary.
Lightning protection
To protect the device from lightning, follow these guidelines:
· Make sure the chassis is reliably grounded by using the grounding cable.
· Make sure the grounding terminal of the AC power receptacle is reliably grounded.
· Install a lightning protector at the power input end.
Installation accessories
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Power cable (provided) |
Power adapter (provided) |
Rubber feet (provided) |
Grounding terminal (provided) |
Console cable (provided) |
Grounding cable (user-supplied) |
Pre-installation checklist
Table 4 Pre-installation checklist
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Item |
Requirements |
Result |
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Installation site |
Ventilation |
· There is a minimum of 10 cm (3.9 in) of clearance around the device. · A ventilation system is available at the installation site. |
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Temperature |
0°C to 40°C (32°F to 104°F) |
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Relative humidity |
5% to 95% (noncondensing) |
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Cleanness |
· Dust concentration ≤ 3 × 104 particles/m3 · No dust on desk within three days |
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ESD prevention |
· The device is reliably grounded. · The equipment room is dust-proof. · The humidity and temperature are at acceptable levels. |
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EMI prevention |
· Take effective measures to protect the power system from the power grid system. · Separate the protection ground of the device from the grounding device or lightning protection grounding device as far as possible. · Keep the device far away from radio stations and radar and high-frequency devices working in high current. · Use electromagnetic shielding when necessary. |
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Lightning protection |
· The chassis is reliably grounded. · The grounding terminal of the AC power receptacle is reliably grounded. |
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Electricity safety |
· Equip a UPS. · In case of emergency during operation, switch off the external power switch. |
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Safety precautions |
The device is far away from any moist area and heat source. |
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Accessories |
Accessories provided with the device. |
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Reference |
· Documents shipped with the device. · Online documents. |
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