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.
lists general
principles.
Table 3-10
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.
HUAWEI CX600-8/16/X3/X8/X16 Metro Service Platform
Hardware Description
3 CX600-X16
Issue 03 (2013-11-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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