Installation Manual 36 Document #: LTRT-94704
Mediant 3000 & IPmedia 3000
2.8 Chassis Cooling System
The device's components are cooled by the Fan Tray module (FM/M3K), located on the
extreme left of the chassis' front panel. The Fan Tray module is hot swappable and
provides a handle for quick and easy removal and insertion. The module is composed of
eight fans and a removable Air Filter (AF/3K). The fans are divided into two independent
functional segments to prevent a single point of failure, providing necessary air flow for
each blade in the card cage even if one of the fans or one segment stops operating. The
Fan Tray module sucks air into the chassis using the eight fans, through a perforated grill
located on the chassis' left panel. The incoming air passes through the Air Filter, whose
honeycombed design prevents radio frequency (RF) interferences. The cool air passes over
the entire set of blades, cooling each one. The air then exits the chassis through perforated
vents on the chassis' right panel.
The Fan Tray module also provides severity alarm LEDs and an Alarm Cut-Off (ACO)
button on its front panel (for a description, refer to ''Alarm LEDs and ACO Button'' on page
21).
Figure 2-18: Fan Tray Module
Blank panels are used to cover all unoccupied slots on the chassis' front and rear panels.
These panels are constructed to assist optimal air flow within the chassis.
When implementing the 8410 blade in a Mediant 3000 Simplex system, Air Baffle panels
are also used (refer to figure below) to assist in cooling the system. The Air Baffles maintain
internal airflow pressure and ensure the correct operating temperature in the front cage of
the chassis. These panels are installed in slots 3 and 4 in the chassis' front panel.
Figure 2-19: Air Baffle Panel for Unoccupied Front-Panel Slots
To Next Page
Loading...
Need help?
General
