Installation guide

9
General Safety Precautions
OL-2189-01
General Safety Precaution and Maintenance Guidelines
Warning Never install telephone wiring during an electrical storm.
Warning Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard.
Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they containelectromagnetic interference(EMI)
that might disrupt other equipment; and theydirect the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity.
Warning Use caution when installing or modifying telephone lines.
Warning Ultimate disposal of this product should be handled according to all national laws and regulations.
Warning This unit is intended for installation in restricted access areas. A restricted access area is where
access can only be gained by service personnel through the use of a special tool, lock and key, or
other means of security, and is controlled by the authority responsible for the location.
Warning Connect the unit only to DC power source that complies with the Safety Extra-Low Voltage (SELV)
requirements in IEC 60950 based safety standards.
Warning This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations.
Warning Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
Warning Avoidusingatelephone (otherthanacordlesstype) duringanelectrical storm.Theremaybearemote
risk of electric shock from lightning.
Warning Do not use a telephone to report a gas leak in the vicinity of the leak.