1 Hardware safety guidelines

Installing the device

To ceiling-mount the device, make sure the ceiling has a thickness less than 18 mm (0.71 in).

The device cannot be installed securely if the ceiling is too thick.

Do not mount the device to a metallic ceiling.

Radio interference.

To ceiling-mount the device, make sure the ceiling can hold a maximum weight of 5 kg (11.02 lb).

Device damage in case of a fall.

As a best practice, do not mount the device to a ceiling made of materials weak in strength such as plaster. To mount the device on such a ceiling due to environmental restrictions, use a strong plate to reinforce the ceiling.

Device damage in case of a fall.

Reserve adequate clearance around the device for heat dissipation.

Device overtemperature.

The screw models and lengths must be as specified in the installation guide.

Device component damage caused by incompatible screws.

Do not use an excessive torque to fasten a screw.

Device damage.

Handling transceiver modules

Do not stare into any open apertures of operating transceiver modules or optical fiber connectors.

Disconnected optical fibers or transceiver modules might emit invisible laser light. Staring into any fiber port or viewing directly with non-attenuating optical instruments when the device has power might hurt your eyes.

When removing a transceiver module, do not touch the golden plating of the transceiver module.

Transceiver module damage.

Handling cables

Use professional waterproof materials to waterproof unused ports after the device is installed outdoors.

The original waterproof measures on the ports will become invalid in the outdoor harsh environment.

Attach loads to unused external antenna connectors.

Radio interference.

After connecting cables to antenna ports and Ethernet ports on an outdoor device, waterproof the connections and ports.

Device damage caused by water intrusion.

Ground an outdoor device reliably.

Device damage caused by lightning strikes.

When connecting an RF cable to an antenna port, install a lightning arrester for the antenna port and ground the device reliably.

Device damage caused by lightning strikes.

Handling the power supply

The power adapter or PoE source must meet the maximum power requirement of the device.

The device cannot operate at full load.

Moving the device

Do not hold the handle of a power supply, air vents of the chassis, or ejector levers of a module to move the device.

Device damage.

Handling the device

Pressing the RESET button on the device will reset the device forcibly. This operation can be performed only by qualified maintenance personnel when a severe system failure occurs.

Service interruption.

Avoid touching the device surface by the skin.

Thermal burns when the skin touches the hot surface of an overheated device.

Do not block air inlet and outlet vents of the device.

Device damage cause by insufficient heat dissipation.

Do not insert external objects, such as iron wires into the device through air vents.

Electric shock and device damage.

When an x86 device is operating, do not turn off power to it forcibly, or remove a power supply directly from it.

System crash.

Handling modules

Do not install or remove a module if you do not wear an ESD wrist strap.

Static electricity can damage the electronic components on the module, causing module damage or unstable operation.

When holding a module, do not touch the electronic components or PCB directly.

Module damage or unstable operation caused by static electricity.

Put a module into an antistatic bag when it is not inside the chassis.

Module damage or unstable operation caused by static electricity.

When a module is loading and downloading the software, do not power off the device or hot swap the module.

Module damage.

Do not touch the connectors on a module when installing or removing the module.

Module damage.

Handling transceiver modules

Do not stare into any open apertures of operating transceiver modules or optical fiber connectors.

Disconnected optical fibers or transceiver modules might emit invisible laser light. Staring into any fiber port or viewing directly with non-attenuating optical instruments when the device has power might hurt your eyes.

When removing a transceiver module, do not touch the golden plating of the transceiver module.

Transceiver module damage.

Handling cables

Network cables are used for the communication between the device and the maintenance terminal. Network cable connection or disconnection can be performed only by qualified maintenance personnel for service adjustment as scheduled and they must be aware of the impact on the network.

Login failure from a maintenance endpoint to the device.

Handling power supplies

Before removing a power supply, turn off the circuit breaker.

Device damage or bodily injury.

Operate the power switches on the PDUs in the cabinet only when upgrading or expanding the device, replacing the components in the device, or when a severe system failure occurs.

Device shutdown or service interruption.