Nortel Networks BCM1000 - Manual (Page 3)

3
Installation and Maintenance Guide
North American Regulatory Information
Safety
Business Communications Manager equipment meets all applicable requirements of both the CSA
C22.2 No. 950-95 and UL-1950 Edition 3.
Danger: Risk of shock.
Read and follow installation instructions carefully.
Ensure the Business Communications Manager base unit and Business Communications
Manager expansion unit are unplugged from the power socket and that any telephone or
network cables are unplugged before opening the Business Communications Manager
base unit or Business Communications Manager expansion unit.
If installation of additional hardware and /or servicing is required, disconnect all telephone
cable connections prior to unplugging the Business Communications Manager.
Ensure the switch located on the back of the housing, on the power supply, is set to the
correct input voltage (115 or 230).
Ensure the Business Communications Manager base unit and Business Communications
Manager expansion unit are plugged into the wall socket using a three-prong power cable
before any telephone cables are connected.
Caution: Only qualified persons should service the system.
The installation and servicing of this hardware is to be performed only by service
personnel having appropriate training and experience necessary to be aware of hazards to
which they are exposed in performing a task and of measures to minimize the danger to
themselves or other persons.
Electrical shock hazards from the telecommunication network and AC mains are possible
with this equipment. To minimize risk to service personnel and users, the Business
Communications Manager system must be connected to an outlet with a third-wire ground.
Service personnel must be alert to the possibility of high leakage currents becoming
available on metal system surfaces during power line fault events near network lines.
These leakage currents normally safely flow to Protective Earth ground via the power
cord. Therefore, it is mandatory that connection to an earthed outlet is performed first and
removed last when cabling to the unit. Specifically, operations requiring the unit to be
powered down must have the network connections (central office lines) removed first.