Antifreeze Handling - Huawei NetCol5000-C030 User Manual

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual
Figure 4-33 Shutdown
Step 2 Tap Confirm. If the device is successfully shut, the system displays a message,
indicating that the command is successfully triggered.
Step 3 Turn off the power switches (AC1 and AC2).
Step 4 (Optional) If the power supply needs to be disconnected for maintenance or for a
long period, switch off the smart cooling product circuit breaker on PDF.
----End

4.7.1 Antifreeze Handling

Context
If the NetCol5000-C will be idle for a long time, ensure that the circulation water
inside the system has a temperature no lower than 3°C, or has used antifreeze
liquid, otherwise, the heat exchanging pipes of the smart cooling product may
freeze up and crack. If the water temperature does not meet the requirement,
drain all water out of the NetCol5000-C.
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 4-34 Drainage needle valves of the heat exchanger (NetCol5000-C065)
Issue 04 (2021-03-15) Copyright © Huawei Technologies Co., Ltd.
4 Power-On Commissioning
121