Juniper QFX10016, Руководство по оборудованию

Страница: 422 / 439

• Operate the device within marked electrical ratings and product usage instructions.
• To ensure that the device and peripheral equipment function safely and correctly, use the cables and
connectors specified for the attached peripheral equipment, and make certain they are in good
condition.
You can remove and replace many device components without powering off or disconnecting power to
the device, as detailed elsewhere in the hardware documentation for this device. Never install
equipment that appears to be damaged.
Action to Take After an Electrical Accident
If an electrical accident results in an injury, take the following actions in this order:
1. Use caution. Be aware of potentially hazardous conditions that could cause further injury.
2. Disconnect power from the device.
3. If possible, send another person to get medical aid. Otherwise, assess the condition of the victim, and
then call for help.
Prevention of Electrostatic Discharge Damage
Device components that are shipped in antistatic bags are sensitive to damage from static electricity.
Some components can be impaired by voltages as low as 30 V. You can easily generate potentially
damaging static voltages whenever you handle plastic or foam packing material or if you move
components across plastic or carpets. Observe the following guidelines to minimize the potential for
electrostatic discharge (ESD) damage, which can cause intermittent or complete component failures:
• Always use an ESD wrist strap when you are handling components that are subject to ESD damage,
and make sure that it is in direct contact with your skin.
If a grounding strap is not available, hold the component in its antistatic bag (see Figure 215 on page
412 ) in one hand and touch the exposed, bare metal of the device with the other hand immediately
before inserting the component into the device.
411