Huawei DBS3900 Installation Manual page 294

Figure 1-1 Safety personal protective equipment (PPE)
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1.2 Installation Environment Requirements
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Equipment installation, operation, and maintenance must follow procedures in the
Hardware Installation and Maintenance Guide, Configuration Guide, and Operation and
Maintenance Guide.
Use a voltmeter to measure the voltage at the contact point to prevent electric shocks
before touching any metal surface or terminal.
Ensure all slots are inserted with boards or filler panels. Prevent exposure of board
hazardous voltage and energy, ensure normal working of ventilation channels, control
electromagnetic interference, and prevent dusts or foreign matters from the backplane,
mother board, and boards.
After equipment installation, users should conduct routine checks and maintenance, and
promptly replace faulty parts to ensure equipment safe running as required by the
Hardware Installation and Maintenance Guide and Operation and Maintenance Guide.
After equipment installation, clear equipment area and remove empty packaging
materials, such as the carton box, foam, plastics, and cable ties.
In case of fire, evacuate from the building or equipment area and press the fire alarm bell,
or call the fire emergency number. Do not enter the burning building again in any cases.
Ensure the installation environment comply with equipment specifications, including the
voltage, temperature, humidity, altitude, pollution degree, overvoltage category , and
waterproof and dustproof classification.
Do not place the equipment in a flammable, explosive gas or smog environment, or
perform any operation in such environment.
Keep acidic, alkaline or other corrosive gases away from the installation site.
Keep the equipment away from sources of heat or fire, such as the electric heater,
microwave oven, oven, water heater, fireplace fire, candle or other places that may
Safety Information