NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Item (Monthly
Maintenance)
Start the indoor unit. Choose
Maint > Diagnostic Mode >
Enter on the main screen, and
set Electric heater to On.
Check whether the electric
heater generates heat.
NOTE
To avoid burns, do not touch the
electric heater surface with bare
skin.
Replace the electric heater. For details,
refer to 5.4.11 Replacing the Electric
Heater.
5.1.4 Yearly Maintenance
Table 5-4 lists yearly maintenance items for the indoor unit.
Calculate the total cooling capacity and total server load of running indoor units. If the total
load exceeds 80% of the total cooling capacity of the air conditioner, Huawei recommends
increasing the number of air conditioners.
Table 5-4 Yearly maintenance checklist
Item (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%, the T/H sensor must
be calibrated or replaced. 6.12
Calibrating a Sensor describes how to
calibrate the T/H 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.
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