Rear Panel; Fans; Power Supply - Lenovo G8124-E Installation Manual

Rear Panel

Fans

Power Supply

24
G8124-E Installation Guide
Six internal fans cool the switch unit. If an individual fan fails, the other fans continue
to run, and the switch unit continues to operate normally.
Note: Fans are not customer replaceable.
Fan operation and internal temperatures are monitored. If the air temperature
exceeds a desired threshold, the environmental monitor displays warnings.
Note: If a fan fails, the maximum operating temperature drops from +40°C (104°F)
to +35°C (95°F).
If there is a failure of one or more fans, the front panel Fan LED flashes.
For redundancy, the G8124-E includes two internal AC power supplies. Each of the
two IEC 320 power connectors can be attached to a universal grounded AC power
source.
Statement 5
CAUTION:
The power control button on the device and the power switch on the power
supply do not turn off the electrical current supplied to the device. The device
also might have more than one power cord. To remove all electrical current
from the device, ensure that all power cords are disconnected from the power
source.