Installing Cables - Huawei NetCol5000-A050 User Manual

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual (1350 mm Depth)
Step 1 Connect the rubber hoses, pressure gauges, reducing valve, and nitrogen cylinder
to the device. The pressure gauges and reducing valve are closed.
Figure 4-51 Nitrogen injection for pressure preservation (without a low
temperature component)
(1) Nitrogen cylinder
(4) High pressure gauge
Figure 4-52 Nitrogen injection for pressure preservation (with a low temperature
component)
(1) Nitrogen cylinder
(4) Pressure gauge 2
(7) Liquid pipe needle valve
Step 2 Open the pressure gauges and reducing valve. Inject 3.0 MPa nitrogen and
preserve the pressure for 24 hours. The system pressure should stay constant
under unchanging ambient temperature conditions. If there is considerable
temperature change, perform the test again.
Step 3 If the pressure decreases, use soapy water to identify the leaking point and repair
it. If the pressure preservation is proper, exhaust nitrogen from the needle valves.
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4.9 Installing Cables

Issue 04 (2022-12-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
(2) Reducing valve
(5) Low-pressure needle valve (6) Exhaust pipe needle valve
(2) Reducing valve
(5) Low-pressure needle valve (6) Exhaust pipe needle valve
4 System Installation
(3) Low pressure gauge
(3) Pressure gauge 1
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