•
Do not open or remove chassis covers or sheet-metal parts unless instructions are
provided in the hardware documentation for this device. Such an action could cause
severe electrical shock.
•
Do not push or force any objects through any opening in the chassis frame. Such an
action could result in electrical shock or fire.
•
Avoid spilling liquid onto the chassis or onto any device component. Such an action
could cause electrical shock or damage the device.
•
Avoid touching uninsulated electrical wires or terminals that have not been
disconnected from their power source. Such an action could cause electrical shock.
•
Always ensure that all modules, power supplies, and cover panels are fully inserted
and that the installation screws are fully tightened.
Related
Documentation
AC Power Electrical Safety Guidelines on page 314•
• DC Power Electrical Safety Guidelines for Switches on page 316
• General Electrical Safety Guidelines and Warnings on page 311
• Maintenance and Operational Safety Guidelines and Warnings on page 305
• Installation Instructions Warning on page 291
• Grounded Equipment Warning on page 298
Definitions of Safety Warning Levels
The documentation uses the following levels of safety warnings (there are two Warning
formats):
NOTE: You might find this information helpful in a particular situation, or you
might overlook this important information if it was not highlighted in a Note.
CAUTION: You need to observe the specified guidelines to prevent minor
injury or discomfort to you or severe damage to the device.
WARNING: This symbol alerts you to the risk of personal injury from a laser.
WARNING: This symbol means danger. You are in a situationthat could cause
bodily injury. Before you work on any equipment, be aware of the hazards
involved with electrical circuitry and be familiar with standard practices for
preventing accidents.
Copyright © 2017, Juniper Networks, Inc.284
EX4300 Switch Hardware Guide
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