Item Description Type
Engineering
procurement
material
This type of materials is not
congured by Huawei.
Customers need to prepare
them by themselves.
Drainpipe, pipe support, and
equipotential ground cable
4.2.2.1 R410A Refrigerant
Do not use low-quality refrigerant. Huawei is not responsible for any damage
caused by low-quality refrigerant.
Verify that the refrigerant is authentic in the following ways:
1. Contact the refrigerant producer to
conrm the refrigerant authenticity.
2. As shown in Figure 4-21, place the refrigerant in an indoor place with
constant temperature and humidity for 24 hours. Then, use a thermometer to
measure the temperature of the refrigerant tank outer surface and connect a
pressure gauge to the pressure tank to measure the internal pressure. Find the
saturation pressure corresponding to the measured outer surface temperature
from Table 4-12. If the deviation between the saturation pressure and the
measured internal pressure is greater than 0.2 MPa, the refrigerant does not
meet the requirements and needs to be replaced.
Figure 4-21 Checking refrigerant
Table 4-12 Mapping between temperatures and R410A saturation pressure
Temperatur
e (°C)
Saturation
Pressure –
Gauge
Pressure
(MPa)
Temperatu
re (°C)
Saturation
Pressure –
Gauge
Pressure
(MPa)
Temperatu
re (°C)
Saturatio
n
Pressure –
Gauge
Pressure
(MPa)
0 0.7 19 1.31 38 2.21
1 0.73 20 1.35 39 2.27
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 4 Installation
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 52
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