NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
3 Installation Guide
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
27
1.
Contact the refrigerant producer to confirm the refrigerant authenticity.
2.
Check the refrigerant by following the steps shown in
: 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
and calculate the deviation from the measured internal pressure. If the
deviation is more than 0.2 MPa, the refrigerant is not qualified 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)
Temperature
(°C)
Saturation
Pressure-Surface
Pressure (MPa)
Temperature
(°C)
Saturation
Pressure-S
urface
Pressure
(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
3
0.78
22
1.43
41
2.39
4
0.81
23
1.47
42
2.45
5
0.84
24
1.51
43
2.51
6
0.87
25
1.56
44
2.57
7
0.9
26
1.60
45
2.63
8
0.93
27
1.65
46
2.7
9
0.96
28
1.69
47
2.76
10
0.99
29
1.74
48
2.83
11
1.02
30
1.79
49
2.9
12
1.05
31
1.84
50
2.97
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