Instruction manual

RADVISION |SCOPIA Elite 5000 Series MCU Safety Guide Chassis-related Safety Information| 11
WARNING
Ensure that each power domain supply circuit breaker is switched OFF while completing the
following power connection procedure. Failure to comply can result in personal injury.
WARNING
When external power is applied, the chassis is energized at all times. Power to the chassis is
controlled only from the external power source, and cannot be switched off at the chassis. Failure
to observe can result in personal injury.
NOTE
In a typical telecommunications environment, the VRTN path of the -48 VDC supply is
grounded to protective earth (PE) of the building.
Airflow Information
If you plan to install the chassis in an equipment rack, follow these precautions to avoid overheating condition:
• Install the chassis in an enclosed rack only if it has adequate ventilation or an exhaust fan; use an open rack
whenever possible.
• Note that a ventilation system that is too powerful in a closed rack might prevent cooling by creating negative
pressure around the chassis and redirecting the air away from the chassis intake vent. If necessary, operate
the chassis with the rack open.
• Use baffles inside the enclosed rack to assist in cooling the chassis.
CAUTION
Avoid equipment overheating hazard: Ensure that filler panels are installed in all empty blade
cage slots, front and rear. Missing filler panels or other openings in the chassis may cause
equipment damage due to cooling fan airflow disruption.