Huawei NetCol5000-A050 User Manual page 124

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
●
Step 2 Open the pressure gauges and reducing valve. Inject 3.0 MPa nitrogen and
preserve the pressure for 24 hours. The system pressure should stay constant
under unchanging ambient temperature conditions. If there is considerable
temperature change, perform the test again.
The outlet pressure of the reducing valve should be within 3.0 MPa; otherwise,
components may be damaged.
Step 3 If the pressure decreases, find out and repair the leakage point by using soap
water or a halogen leak detector. If the pressure is preserved properly, exhaust
nitrogen from the three positions shown in
----End
Issue 13 (2023-08-20)
If a low temperature component is installed on the outdoor side, connect
pipes as shown in Figure
low-pressure, discharge pipe, and liquid pipe needle valves simultaneously.
Figure 4-78 Charging nitrogen to pipes with a low temperature component
(1) Nitrogen cylinder
(4) Pressure gauge 2
(7) Discharge pipe needle
valve
NO TICE
NO TE
For scenarios where a container is transported without refrigerant, keep 0.2 to 0.6 MPa of
nitrogen in the pipeline.
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4-78, and charge nitrogen into the system from the
(2) Reducing valve
(5) Connection nut
(8) Liquid pipe needle valve
Figure 4-61.
4 Installation
(3) Pressure gauge 1
(6) Low-pressure needle
valve
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