Following All Safety Precautions
Before any operation, read the instructions and precautions in this document carefully to
minimize the possibility of accidents. The Danger, Caution, and Note items in the documents
do not cover all the safety precautions that must be followed. They only provide the generic
safety precautions for operations.
When operating Huawei products and equipment, you must comply with safety precautions
and special safety instructions related to the equipment provided by Huawei. The safety
precautions in the document are related to only Huawei products. Huawei is not liable for
any consequence that results from the violation of universal regulations for safety operations
and safety codes on design, production, and equipment use.
Complying with the Local Safety Regulations
When operating the device, comply with the local safety regulations.
Qualified Personnel Only
The installation and maintenance personnel of Huawei equipment must be trained and
master the correct operating methods and safety precautions before beginning work.
Safety of Personnel
• The AC power supply provides power for running the system. Direct contact with the high
voltage power supply or contact through damp objects may result in serious injury.
• In a thunderstorm, do not perform operations on high voltage and AC power supply facilities
or on a steel tower and mast.
• Power off the device before performing operations on the power supply equipment.
• Protect yourself when drilling holes. Flying dust may hurt your eyes or you may inhale the
dust.
• When working at a height, be cautious about falling objects.
Device Safety
• Leave space around the device for heat dissipation. Keep the device away from heat and
fire, for example, electric heaters and candles.
• Do not disassemble the device. When the device has a fault, contact the operator.
• Ensure that the device is always kept in a dry environment. If any liquid leaks through the
device, power off the device and contact the operator.
• If you detect smoke, unusual sound, or smell emanating from the device, unplug the device
immediately.
• Power off the device during thunder and lightning.
• Do not hang anything on the power cable or plug. Do not cover the device.
• Before cleaning the device, unplug it. Use a soft, dry cloth to clean the device exterior.
• Ensure that the power plug is clean and dry. Do not use a damaged or aged power cable.
• Power on an DAU within 24 hours after unpacking it. If you power off an DAU for
maintenance, restore power to the DAU within 24 hours.
• To avoid direct lightning, DAU must be installed in the protection angle of 45 degrees below
a separate lightning rod, or protection angle of 45 degrees below a surrounding high-rise
building.
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Safety Information
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Environmental protection
This product complies with the design requirements for environmental protection. The storage,
use, and placement of the product must follow national laws and regulations.
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Privacy Policy
To better understand how we protect your personal information, please see the privacy policy at
http://consumer.huawei.com/privacy-policy
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