Huawei NetCol8000-A013 User Manual page 35

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (800 mm Width)
2.
3.
Figure 3-1 Checking refrigerant
Table 3-3 Mapping between temperatures and R410A saturation pressure
Temperature
(° C)
0
1
2
3
4
5
6
7
8
9
10
11
12
Issue 05 (2019-12-20)
Contact the refrigerant producer to confirm the refrigerant authenticity.
Check the refrigerant by following the steps shown in
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 3-3 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.
Saturation
Pressure-S
urface
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
Copyright © Huawei Technologies Co., Ltd.
Temperature Saturation
(° C) Pressure-S
urface
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
3 Installation Guide
Figure 3-1: Keep the refrigerant
Temperatur
e (° C)
38
39
40
41
42
43
44
45
46
47
48
49
50
Saturati
on
Pressure
-Surface
Pressure
(MPa)
2.21
2.27
2.33
2.39
2.45
2.51
2.57
2.63
2.7
2.76
2.83
2.9
2.97
28