Huawei NetCol5000-A050 User Manual page 75

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
2.
Figure 4-21 Checking refrigerant
Table 4-8 Mapping between temperatures and R410A saturation pressure
Temperatur
e (°C)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Issue 13 (2023-08-20)
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 4-8. 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.
Saturation
Pressure –
Gauge
Pressure
(MPa)
0.7
0.73
0.75
0.78
0.81
0.84
0.87
0.9
0.93
0.96
0.99
1.02
1.05
1.09
Copyright © Huawei Digital Power Technologies Co., Ltd.
Temperatu Saturation
re (°C) Pressure –
Gauge
Pressure
(MPa)
19 1.31
20 1.35
21 1.39
22 1.43
23 1.47
24 1.51
25 1.56
26 1.60
27 1.65
28 1.69
29 1.74
30 1.79
31 1.84
32 1.89
4 Installation
Temperatu Saturatio
re (°C) n
Pressure –
Gauge
Pressure
(MPa)
38 2.21
39 2.27
40 2.33
41 2.39
42 2.45
43 2.51
44 2.57
45 2.63
46 2.7
47 2.76
48 2.83
49 2.9
50 2.97
51 3.04
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