Optional) Leakage Test With Water; Cable Connections; Overview And Precautions - Huawei NetCol5000-C030H90D0 User Manual

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual (2019)
Step 4 Adjust the air exhausting speed until no bubble flows out of the hose.
Step 5 After air is expelled, manually turn the chilled water valve to the 0 state.
Step 6 Close the exhaust valve.
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3.11 (Optional) Leakage Test with Water

● If the leakage test has been done with nitrogen, skip the test with water.
● Ensure that the indoor temperature is always above 0°C during the leakage test
with water, otherwise, the pipes may experience frost cracks. If the indoor
temperature is below 0°C, take anti-freezing measures for the pipes.
Manually open the chilled water valve. Inject water to 0.8 MPa, and preserve the
pressure for 24 hours. Then connect a pressure gauge to a needle valve on the
pipeline to measure the pressure. If the reading remains unchanged, the pipe is
not leaking. You can perform the following operations.

3.12 Cable Connections

3.12.1 Overview and Precautions

Precautions
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Issue 03 (2020-08-30)
NO TICE
Connections of all power cables, control cables, and ground cables must
comply with the local electrical code, and the cable specifications should
comply with the local cabling specifications.
For details about the maximum current, see the equipment nameplate.
Ensure that the voltage and frequency of the primary power supply meet the
requirements.
Only trained and qualified personnel are allowed to connect cables.
Before connecting cables, use a multimeter to measure the input voltage and
ensure that the power supply is off.
Ensure that all smart cooling products are safely grounded before powering
them on.
Keep cables away from the fan, and so on (if unavoidable, take protective
measures), and ensure that cables are securely connected.
When laying out cables, ensure that the power and signal cables are reliably
separated and that the strong- and weak-current cables are bound separately.
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