Follow these suggestions to choose high-quality refrigerant:
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 3-7 Mapping between temperatures and R410A saturation pressure
Temperature
(°C)
Saturation
Pressure-
Surface
Pressure
(MPa)
Temperatur
e (°C)
Saturatio
n
Pressure-
Surface
Pressure
(MPa)
Temperatu
re (°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
3
0.78
22
1.4
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
NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width)
3 Installation Guide
Issue 17 (2020-10-22)
Copyright © Huawei Technologies Co., Ltd.
29
