Figure 4-32 the drainage needle valves of the heat exchanger (NetCol5000-C030/
C032)
(1) Drainage needle valves 1
(2) Drainage needle valves 2
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 steps
for three times.
----End
4.8 Checking After Commissioning
lists the commissioning checklist.
Table 4-12 Commissioning checklist
Check Item
Actual Result
No oil stain exists on the copper pipe thermal insulation
foam or bottom plate, or it has been cleaned.
□ Passed □ Failed
The needle valve plug is secured (torque of 0.45±0.05
N•m), and valve bonnet is tightened.
□ Passed □ Failed
The foreign matter inside the water pan and bottom plate
is cleaned up.
□ Passed □ Failed
NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual (2019)
4 Commissioning
Issue 03 (2020-08-30)
Copyright © Huawei Technologies Co., Ltd.
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