Huawei DBS3900 Installation Manual page 293

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Basic Safety Precautions
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: Non-tropical climate symbol: This symbol indicates that equipment is safe to use
only in non-tropical climates.
: Symbol on/near a fan box/moving part. This symbol is silkscreened on or
attached to a fan box panel to warn operators not to touch the fan with fingers. "Do not
touch the blades when the fan is rotating!"
or : Instruction reading symbol. This symbol is attached to remind
instruction reading next to an equipment port to notify a user to read the manual for the
usage of the port. Application scenarios of this symbol include but are not limited to:
1. For equipment with multiple power supplies, this symbol is used to replace the multi-
power symbol next to power supplies, which indicates that the equipment has multiple
power supplies and all the power supplies must be cut off to power off the equipment.
2. For equipment with multiple input ports, this symbol is used next to the output ports.
Read the manual before connection to understand the rated value and configuration
information of power output.
3. For equipment with multiple slots, this symbol is used next to the slots. Read the
manual to understand the slot information, board restriction and usage conditions.
Instructed person must obtain related certificates after strict training, understand all the
required safety regulations, and master correct operation methods before installing,
operating and maintaining Huawei equipment.
Equipment installation, operation, and maintenance must comply with local laws and
regulations. Safety information in the manual only serves as a supplement to local laws
and regulations, and:
- Only skilled person and instructed person can install, operate, and maintain
equipment.
- Only skilled person and instructed person can remove safety facilities and
maintenance equipment.
- Operators should promptly report faults or errors that may cause safety issues.
- Equipment operators, including operators, instructed person and skilled person,
should have special operation qualifications required by the local country, such as
high-voltage operation, climbing, and special equipment operation qualifications.
If personal injury or equipment damage may occur during installation, equipment
operators should stop operation immediately, report the situation to the project owner,
and take effective protective measures.
Installation, operation, and maintenance of outdoor equipment are strictly forbidden in
lightning, rainy, snowy, windy and other adverse weather conditions. This includes but
not limited to outdoor equipment transportation, cabinet installation, power cable
installation, and outdoor cable connection.
Do not wear watches, bracelets, bangles, rings, necklaces or other conductive objects
during equipment installation, operation and maintenance.
Dedicated insulation tools, such as insulation gloves, safety clothing, safety helmet, and
safety shoes, must be used during equipment installation, operation, and maintenance, as
shown in Figure 1-1.
Safety Information