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ME60
Hardware Description
1 Hardware Description
Issue 01 (2018-05-07)
125
1.9.2 Heat Dissipation System of the ME60-X8
1.9.2.1 System Air Channel
The ME60-X8 supports two fan modules. Each fan module consists of one fan.
The ME60-X8 draws in air from the front and exhausts air from the rear. The air intake vent is
located above the board area on the front chassis; the air exhaust vent is located above the
board area on the rear chassis.
The two fan modules of the ME60-X8 are located side by side on the air exhaust vent, with
each module containing one fan. The entire system dissipates heat by drawing in air, as shown
in Figure 1-70.
Figure 1-70
Air flow in the ME60-X8
1.9.2.2 Fan Speed Adjustment
When the system is fully configured, temperatures reported by the temperature sensors on the
Interface boards, SFUs, and MPUs serve as the basis for fan speed adjustment. Table 1-87
lists general principles.
Table 1-87
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%)
When fans rotate at a constantly low speed, the
noises meet the standard and the fans meet heat
dissipation requirements of a fully configured
system.
27°C -
40°C
Linear variation
The fan speed is adjusted smoothly in linear mode,
without a sharp increase in noises.