Huawei NetCol5000-A-035 - Connecting Pipelines

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
3 Installation Guide
Issue 13 (2019-01-15)
Copyright © Huawei Technologies Co., Ltd.
48
Figure 3-23 Exhausting nitrogen
(1) Discharge pipe needle
valve
(2) Low-pressure needle
valve
(3) Liquid pipe needle valve
Step 2 Open the pressure gauge valve. Loud noises of air flow are generated at first and then
disappear gradually.
Step 3 After the air is exhausted, remove the pressure gauge and install the valve bonnet.
Step 4 Exhaust nitrogen from liquid pipe low-pressure needle valve by following Step 1 to Step 3.
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3.9 Connecting Pipelines