Huawei NetCol5000-A025 User Manual page 73

NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width)
Exercise caution during welding to avoid burning components, such as rubber
rings, inside the cabinet.
Charge nitrogen to protect pipes from oxidation while you weld the pipes, as
shown in
Nitrogen injection volume range: 6–12 L/min. The nitrogen injection time for the
entire system is greater than 2 minutes. The nitrogen injection time after pipe
welding is greater than 1 minute.
● Slowly charge nitrogen into pipes through the discharge pipe needle valve
when welding gas pipes.
● Slowly charge nitrogen into pipes through the liquid pipe needle valve when
welding liquid pipes.
Figure 3-33 Routing pipes from the bottom
(1) Gas pipe
Figure 3-34 Welding schematic diagram
Step 2 Take out two straight pipes whose diameters are 3/4 inch and 5/8 inch
respectively from the fitting bag, and weld the two pipes, as shown in
Issue 15 (2020-12-10)
NO TICE
Figure 3-34.
Copyright © Huawei Technologies Co., Ltd.
(2) Liquid pipe
3 Installation Guide
Figure 3-33.
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