NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
6 System Operation and Maintenance
Copyright © Huawei Technologies Co., Ltd.
Table 6-5 Yearly maintenance checklist
Item (on the Basis of Quarterly
Maintenance)
Use a high-precision humidity and
temperature sensor to calibrate the
humidity and temperature sensors
inside and outside the cabinet.
If the temperature deviation is greater
than 1°C or humidity deviation is
greater than 5%, calibrate or replace
the humidity and temperature sensor.
For the calibration method, see the
4.4.2.5 Calibrating a Sensor.
The evaporator fins are not pushed
down.
Use a fin brush to organize the fins that
are pushed down.
Welding
spot and
needle
valve
Check that the welding spots and
needle valves do not leak using
soapy water, or check that they are
free from oil stains.
If leaking points are found, retrieve the
refrigerant and weld the leaking points
again. For details, contact Huawei
technical support.
6.3 Alarm Reference
If the Clear icon is displayed on the Details screen, the alarm can be manually cleared by
tapping the Clear button after the fault is rectified. The alarm clearance type (automatic or
manual) varies with smart cooling products. Alarms can be cleared are a025, a058, a061, a062,
a064, a076, a079, a095.
Table 6-6 Alarm description
Return-
air 1
temp
invalid
Return-
air 2
temp
invalid
1. The cables to the temp
sensor are loose or
damaged.
2. The temp sensor is
faulty.
1. Check the cables to the
temp sensor.
2. Maintain or replace the
temp sensor.
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