Huawei NetCol8000-A Quick Manual page 4

Low-
Optional
temperature
items
component
cable
Teamwork
networking and
monitoring
cable
2.1
Refrigerant R410A
Do not use unqualified refrigerant. Huawei will not be liable for any equipment damage caused
by unqualified refrigerant.
You can verify the refrigerant authenticity in the following ways:
1. Dial the refrigerant manufacturer's hotline to confirm the refrigerant manufacturer authenticity.
2. Place the refrigerant tank indoors for 24 hours. Use a point thermometer to measure the outer
surface temperature of the refrigerant tank (figure 1) , and connect a pressure gauge to the
tank to measure the internal pressure (figure 2). Find the saturation pressure corresponding to
the measured outer surface temperature from the table on the next page. 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.
Mapping Between Saturation Temperatures and Pressure of R410A
Saturation Gauge
temperature (ºC) (MPa)
10 0.99
11 1.02
12 1.05
13 1.09
14 1.12
15 1.16
16 1.19
17 1.23
18
1.27
If low-temperature component is configured, an additional 2 x 1.5
mm² power cable is needed.
If teamwork networking is required, prepare a standard 8pin RJ45
network cable for each device.
If monitoring is required, prepare one 2pin network cable for each
device.
Saturation
temperature
(ºC)
19
20
21
22
23
24
25
26
27
3
Gauge Saturation
(MPa) temperature (ºC)
1.31 28
1.35 29
1.39 30
1.43 31
1.47 32
1.51 33
1.56 34
1.60
35
1.65
36
Gauge
(MPa)
1.69
1.74
1.79
1.84
1.89
1.94
1.99
2.05
2.10