2. As shown in
, 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
. 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 12-33 Refrigerant detection
Table 12-1 Mapping between temperatures and R410A saturation pressures
Temperatur
e (ºC)
Saturation
Pressure –
Gauge
Pressure
(MPa)
Temperatu
re (ºC)
Saturation
Pressure –
Gauge
Pressure
(MPa)
Temperatu
re (ºC)
Saturatio
n
Pressure –
Gauge
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
FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
12 Component Replacement
Issue 03 (2021-04-20) Copyright © Huawei Digital Power Technologies Co., Ltd.
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