Huawei NetCol5000-A035 - 3.9.3 Leak Checking

3.9.3 Leak Checking
Prerequisites
NO TICE
● Pipes from indoor unit and outdoor unit have been soldered properly.
● The measuring range of the pressure gauge must be greater than or equal to
4.0 MPa, and the tolerance range of the leather hose must be greater than or
equal to 4.5 MPa.
● Do not remove the pressure gauge and the leather hose when charging
nitrogen to retain the pressure to prevent the nitrogen from leaking.
● Before leak checking, make sure that the needle valve plugs are tightened.
● Only nitrogen is allowed when leak checking.
Procedure
Step 1 Connect the pressure gauge, hose, reducing valve, and the nitrogen to the device.
The pressure gauge valves and reducing valve should be closed.
● If low-temperature component is not
congured, charge nitrogen from (1)
and (2), as shown in Figure 3-32.
NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width) 3 Installation Guide
Issue 17 (2020-10-22) Copyright © Huawei Technologies Co., Ltd. 60