HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
2 NE40E-X16 Chassis Overview
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 2-11 Air flow in the NE40E-X16
2.3.2 Air Intake Vent
This section describes the air intake vents.
The NE40E-X16 has three air channels.
The upper and lower chassis have separate air channels that draw air from the front and
exhausts air from the rear. The air filters are installed over the air intake vents. Each filter has
a curved face, large area, and small windage resistance. These features help to improve heat
dissipation efficiency. Air filters on the upper and lower chassis are identical.
The air channel in the SFU slot area is located on the left of the chassis. The air filter uses
front access. The depth of the air filter is the same as that of an SFU and the height of the air
filter is four times the height of the an SFU.
2.3.3 Fan Module
This section describes the appearance of the fan module.
Two fan modules each containing one fan are located side by side at the air exhaust vent. If a
single fan fails, the system can still work normally for a short period of time at ambient
temperature of 40°C ( 104°F ). Figure 2-12 shows the appearance of a fan module.
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