Huawei NetCol5000-A-035 - Page 148

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
5 Power-On Commissioning
Issue 13 (2019-01-15)
Copyright © Huawei Technologies Co., Ltd.
139
Figure 5-2 Vacuumizing the cooling system without configuring low-temperature
component
(1) Liquid pipe needle
valve
(2) Low-pressure needle
valve
(3) Low-pressure gauge
valve
(4) Nut
(5) High-pressure gauge
valve
(6) Vacuum pump

If the low-temperature component is connected, vacuumize the cooling system from the
three positions (liquid pipe needle valve, low-pressure needle valve, and discharge pipe
needle valve) at the same time, as shown in Figure 5-3.