Huawei NetCol5000-C030 User Manual page 136

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual
Procedure
Step 1 Remove the plugs from the drainage needle valve 1 and 2 of the heat exchanger,
to drain water naturally until no water flows out.
Figure 5-23 Drainage needle valves of the heat exchanger (NetCol5000-C065)
Figure 5-24 Drainage needle valves of the heat exchanger (NetCol5000-C030/
C032)
(1) Drainage needle valves 1
Step 2 Connect a nitrogen cylinder to the drainage needle valve 1 of the heat exchanger,
set the intake pressure to 0.5 MPa, and blow nitrogen into the valve for 10
minutes so that the water flows out of the drainage needle valve 2.
Step 3 Connect the nitrogen cylinder to the drainage needle valve 2 of the heat
exchanger, set the intake pressure to 0.5 MPa, and blow nitrogen into the valve for
10 minutes, so that the water flows out of the drainage needle valve 1.
Step 4 Stop the nitrogen cylinder and wait for 20 minutes.
Step 5 Start the nitrogen cylinder and repeat
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Issue 06 (2022-12-15) Copyright © Huawei Digital Power Technologies Co., Ltd.
5 Power-On Commissioning
(2) Drainage needle valves 2
Step 2–Step 4 for three times.
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