724-746-5500 | blackbox.com
Page 6
LVN5250A-R2 Hardware Installation Guide
724-746-5500 | blackbox.com
3. Electrical and General Safety Guidelines
DISPOSING OF BATTERY BACKUP UNITS—IF APPLICABLE
WARNING: If the battery backup unit is damaged in any way, toxic chemicals may be released.
The material in the battery pack contains heavy metals that can contaminate the environment. Federal, state, and local
regulations prohibit the disposal of rechargeable batteries in public landfills. Be sure to recycle the old battery packs
properly. Comply with all applicable battery disposal and hazardous material handling laws and regulations in the
country or other jurisdiction where you are using the BBU.
WARNING: There is danger of an explosion if the battery is incorrectly replaced. Replace it only with the same or equivalent type
recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.
WARNING: Disconnect the power supply at the circuit breaker before accessing any components. Turning off the system power
supply switch does not reduce the risk of electrical shock from the power supply terminal block.
CAUTION: • To prevent the unit from overheating, never install the appliance in an enclosed area that is not properly ventilated
or cooled. For proper airflow, keep the front and back sides of the appliance clear of obstructions and away from
the exhaust of other equipment.
• Be aware of the locations of the power switches on the chassis and in the room, so you can disconnect the power
supply if an accident occurs.
• Take extra precautionary measures when working with high-voltage components. Do not work alone.
• Before removing or installing main system components, be sure to disconnect the power first. Turn off the system
before you disconnect the power supply.
• Use only one hand when working with powered-on electrical equipment to avoid possible electrical shock.
• Use rubber mats specifically designed as electrical insulators when working with computer systems.
• The power supply or power cord must include a grounding plug and must be plugged into grounded outlets.
CAUTION: Electric Static Discharge (ESD) can damage electronic components. To prevent damage to your system board, it is
important to handle it very carefully. The following measures can prevent ESD damage to critical components.
• Use a grounded wrist strap designed to prevent static discharge.
• Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use.
• Touch a grounded metal object before removing the board from the antistatic bag.
• Do not let components or PCBs come into contact with your clothing, which may retain a charge even if you are
wearing a wrist strap.
• Handle a board by its edges only; do not touch its components, peripheral chips, memory modules, or contacts.
• When handling chips or modules, avoid touching their pins.
• Put the motherboard and peripherals back into their antistatic bags when not in use.
• For grounding purposes, make sure your computer chassis provides excellent conductivity between the power
supply, the case, the mounting fasteners, and the motherboard.
