Huawei NetCol8000-A013 User Manual page 85

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (800 mm Width)
Step 6 Adjust the compressor rotational speed to 3000 rpm.
1.
2.
Issue 06 (2022-11-25)
Determine whether refrigerant needs to be filled based on the total one-way
pipe length. If refrigerant needs to be filled, fill it from the low-pressure
needle valve on the cooling pipe. Ensure that the refrigerant is filled in small
amount or filled now and then if possible. The total amount of filled
refrigerant must meet the following requirements.
Table 4-6 Refrigerant to be charged
Total One-Way Pipe Length (L)
≤ 30 m
30 m < L ≤ 60 m
Figure 4-9 Adding refrigerant
(1) Electronic balance (2) Refrigerant
cylinder
After the compressor speed stabilizes at 3000 rmp for about 10 minutes,
choose Run > Device Run State to view the Suction Pressure, Discharge
Pressure, EEV Suct Superheat, and Supercool. Check whether the suction
pressure, discharge pressure, EEV suction superheat degree, and supercool
degree are within their normal ranges.
Table 4-7 Running parameters
Outdoor Normal
Ambient Discharge
Temperatur Pressure
e Range
< 15°C 1.5–2.5 MPa
15–35°C 1.5–3.1 MPa
Copyright © Huawei Technologies Co., Ltd.
4 Power-On Commissioning
Refrigerant to Be Charged
No additional refrigerant is required.
(L – 30) x 0.05
(3) Pressure gauge
Normal Normal
Suction Suction
Pressure Superheat
Range Degree
0.7–1.2 MPa 4–10°C
(4) Low-pressure
needle valve
Normal
Supercool
Degree
3–5°C
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