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HUAWEI CX600-8/16/X3/X8/X16 Metro Service Platform
Hardware Description
Figure 3-15 An air filter in the SFU slot area
Placing a black sponge air filter at the air intake vent helps to prevent dust from entering the
system. It is recommended that air filters be removed and cleaned at least once every three
months.
3.3.5 Fan Speed Adjustment
This section describes the 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.
principles.
Table 3-10 Fan Speed Adjustment Principles
Ambient
Temperat
ure
-5°C-+27°
C (23°F -
80.6°F)
27°C-50°C
(80.6°F -
122°F)
Over 45°C
(113°F)
Issue 03 (2013-11-30)
Rotational
Noise and Dissipation Standards
Speed
Low speed (50%
When fans rotate at a constantly low speed, the noises
rotational speed)
meet the NEBS standard and the fans meet heat
dissipation requirements of a fully configured system.
Linear variation
The fan speed is adjusted smoothly in linear mode,
without a sharp increase in noises.
High speed (100%
Fans rotate at high speed to meet heat dissipation
rotational speed)
requirements.
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3 CX600-X16
Table 3-10
lists general
47
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