Huawei NetCol5000-A025 - (Optional) Refrigerant R410 A

● Engineering procurement: materials that are not congured by Huawei and
need to be purchased from another vendor.
3.1.2.1 (Optional) Refrigerant R410A
CA UTION
Do not use low-quality refrigerant. Huawei is not responsible for any damage
caused by low-quality refrigerant.
Follow these suggestions to choose high-quality refrigerant:
1. Contact the refrigerant producer to conrm the refrigerant authenticity.
2. Check the refrigerant by following the steps shown in Figure 3-1: Keep the
refrigerant indoors at a constant temperature and humidity for 24 hours. Use
a thermometer to measure the external surface temperature of the
refrigerant container, and connect a pressure gauge to the container to
measure its internal pressure. Determine the saturation pressure that
corresponds to the measured external surface temperature according to Table
3-6 and calculate the deviation from the measured internal pressure. If the
deviation is more than 0.2 MPa, the refrigerant is not
qualied and should be
replaced.
Figure 3-1 Checking refrigerant
Table 3-6 Mapping between temperatures and R410A saturation pressure
Temperature
(°C)
Saturation
Pressure-
Surface
Pressure
(MPa)
Temperatur
e (°C)
Saturatio
n
Pressure-
Surface
Pressure
(MPa)
Temperatur
e (°C)
Saturati
on
Pressur
e-
Surface
Pressur
e (MPa)
0 0.7 19 1.31 38 2.21
1 0.73 20 1.35 39 2.27
2 0.75 21 1.39 40 2.33
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 3 Installation Guide
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 31