Sagem 4450E - Manual (Page 28)

SAGEM 3P@C
3P@C Installation Manual
Page 2-5 Reproduction and communication in any form prohibited without the written permission of SAGEM SA
To satisfy the requirement for long-term equipment operating temperature, the general chassis design
of 3P@C 4450E fully considers the system heat dissipation. When a single device is operating, the
heat dissipation of the system is shown in Figure 2-8, where, the air is led in from the lower part and
led out from the upper part in the chassis front. The air outlet is on the top of the switch.
Figure 2-8 Heat dissipation of a single system
Hot air is discharged
Cold air comes in
On the air deflector frame is a fan module with 6 radiator fans built in. When the fans are started, the
cold air is drawn in from the inlet on the front of the air deflector frame, then goes upward in the
cabinet. It passes by the switch, and takes away the heat of the switch, and finally goes out from the
top of the switch.
When multiple switches operate at the same time, the hot air in the lower switch are let out from the
top of the switch, and exhausted via the rear outlet of the air deflector frame above it. The following
figure shows the air ducts in the cabinet in the case that multiple switches are operating at the same
time.
Figure 2-9 Air ducts inside the cabinet
Warning
The radiator fans are used for cooling and heat dissipation to
improve the temperature features of the system and ensure the
normal operation of the switch. Make sure these ventilation
holes are not blocked and enough space is reserved on two
sides of the equipment for air circulation, ventilation and heat
dissipation. Otherwise, if the components in the equipment are
overheated, the system would not work normally or even the
components would be damaged by overheat.