Huawei NetCol5000-A050 - Leakage Test with Nitrogen for Refrigerant Pipes

Figure 4-76 Bottom routing of the water inlet pipe
NO TICE
When routing pipes from the top, do not route the pipes over servers or other
devices to protect them from being
aected by pipe leaks.
----End
4.8.9 Leakage Test with Nitrogen for Refrigerant Pipes
Prerequisites
NO TICE
● Refrigerant pipes have been welded.
● The needle valve plugs are tightened.
● The measuring range of a pressure gauge must be at least 4.0 MPa, and the
rubber hose must withstand a pressure of at least 4.5 MPa.
● Only nitrogen can be used for pressure preservation and leakage detection.
● During pressure preservation, do not remove the rubber hoses and pressure
gauges; otherwise, nitrogen may leak.
● When an air-cooled outdoor unit or a water cooling module is connected to the
outdoor side, perform the same operations on the refrigerant side for nitrogen
injection and pressure preservation.
Procedure
Step 1 Connect the rubber hoses, pressure gauges, reducing valve, and nitrogen cylinder
to the device. The pressure gauges and reducing valve are closed.
● If no low temperature component is installed on the outdoor side, connect
pipes as shown in Figure 4-77, and charge nitrogen into the system from the
low-pressure and exhaust pipe needle valves simultaneously.
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 4 Installation
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 99