Item Method Expected Result Troubleshooting
Oxidation of
metal
components in
the PDF or NMW
Visual inspection No metal
component is
rusty.
● If any metal
component
experiences
severe
oxidation,
remove the
rust or replace
the component
in a timely
manner.
● If the
component
was painted
before, repaint
it after
removing the
rust.
Table 3-9 Semiannual maintenance for the cooling system
Item
Method Expected Result Troubleshooting
T/H sensor Use a precision
T/H sensor to
calibrate the T/H
sensors inside and
outside the
cabinet.
The temperature
deviation is less
than 1°C, and the
humidity
deviation is less
than 5%.
If the temperature
deviation is
greater than 1°C
or humidity
deviation is
greater than 5%,
the T/H sensor
must be
calibrated or
replaced.
Evaporator
appearance
Visual inspection The evaporator
ns are not
pushed down.
Use a n brush to
organize the ns
that are pushed
down.
Welding joint and
needle valve
leakage
Check that
welding points
and needle valves
do not leak using
soapy water or
check that they
are free from oil
stains.
Use soapy water
to check whether
welding points
and needle valves
leak.
If leaking points
are found, retrieve
the refrigerant
and weld the
leaking points
again. Contact
Huawei technical
support.
FusionModule2000 Smart Modular Data Center
Maintenance Guide (Fusion Module Actuator) 3 Routine Maintenance
Issue 01 (2020-12-25) Copyright © Huawei Technologies Co., Ltd. 37
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