Juniper EX4300 Series

• Operate the device within marked electrical rangs and product usage instrucons.
• To ensure that the device and peripheral equipment funcon safely and correctly, use the cables and
connectors specied for the aached peripheral equipment, and make certain they are in good
condion.
You can remove and replace many device components without powering o or disconnecng power to
the device, as detailed elsewhere in the hardware documentaon for this device. Never install
equipment that appears to be damaged.
Acon to Take Aer an Electrical Accident
If an electrical accident results in an injury, take the following acons in this order:
1. Use cauon. Be aware of potenally hazardous condions that could cause further injury.
2. Disconnect power from the device.
3. If possible, send another person to get medical aid. Otherwise, assess the condion of the vicm, and
then call for help.
Prevenon of Electrostac Discharge Damage
Device components that are shipped in anstac bags are sensive to damage from stac electricity.
Some components can be impaired by voltages as low as 30 V. You can easily generate potenally
damaging stac voltages whenever you handle plasc or foam packing material or if you move
components across plasc or carpets. Observe the following guidelines to minimize the potenal for
electrostac discharge (ESD) damage, which can cause intermient 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 anstac bag (see Figure 114 on page
385) in one hand and touch the exposed, bare metal of the device with the other hand immediately
before inserng the component into the device.
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