Huawei CloudEngine 7800 Series Hardware Description page 159

CloudEngine 7800&6800&5800 Series Switches
Hardware Description
Figure 4-9 Appearance of a FAN-40HA-B fan module
Figure 4-10 Appearance of a FAN-40HA-F fan module
Function
A FAN-40HA fan module consists of a fan frame, two counter-rotating fans, and a fan control
unit. FAN-40HA-B and FAN-40HA-F fan modules use different airflow designs but have the
same functions.
Table 4-10 Functions of a FAN-40HA fan module
Function
Automatic fan speed adjustment
Hot swap
Heat dissipation
Panel
Figure 4-11
Issue 16 (2015-08-26)
S T A T U S
H A -B
F A N -4 0
S T A T U S
H A -F
F A N -4 0
Table 4-10 describes the functions of them.
and Figure 4-12 show the panels of the FAN-40HA fan modules.
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Description
After the fan module communicates normally
with the switch, the switch controls the speed
of fans based on temperature of the chassis.
Supported
l FAN-40HA-B: back-to-front airflow
l FAN-40HA-F: front-to-back airflow
4 Fan Module
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