4.3.4 Air Filter
The CX600-X8 draws in air from the front top and exhausts air from the rear top. There is a 3
U space in the upper part of the chassis and an air filter on the front of the chassis. To maximize
air intake, the filter is fully perforated. The air filter is fixed to the chassis by a fastener to facilitate
filter removal and replacement.
shows the appearance of an air filter.
Figure 4-14
An air filter
NOTE
Placing a black sponge air filter at the air intake vent helps to prevent dust from entering the system. It is
recommended that the air filter be removed and cleaned once every three months.
4.3.5 Fan Speed Adjustment
When the system is fully configured, temperatures reported by the temperature sensors on the
LPUs, SFUs, and MPUs serve as the basis for fan speed adjustment.
lists general
principles.
Table 4-10
Fan Speed Adjustment Principles
Ambient
Temperat
ure
Rotational Speed
Noise and Dissipation Standards
-5°C-+27°
C (23°F -
80.6°F)
Low speed (50%
rotational speed)
When fans rotate at a constantly low speed, the noises
meet the NEBS standard and the fans meet heat
dissipation requirements of a fully configured system.
27°C-50°C
(80.6°F -
122°F)
Linear variation
The fan speed is adjusted smoothly in linear mode,
without a sharp increase in noises.
Over 45°C
(113°F)
High speed (100%
rotational speed)
Fans rotate at high speed to meet heat dissipation
requirements.
4.4 Switching Network
This section describes the functions of the switch fabric unit.
HUAWEI CX600-8/16/X3/X8/X16 Metro Service Platform
Hardware Description
4 CX600-X8
Issue 03 (2013-11-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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