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 ow are generated at rst 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.
----End
3.9 Connecting Pipelines
● The thickness of heat insulation cottons should not be less than 13 mm.
● When purchasing water pipes, ensure that the water pipe with thermal
insulation foam warped can go through the ports on the bottom and top
boards.
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. 51
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