Huawei NetCol5000-A User Manual page 151

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Do not move the pipe or steel vessel when charging refrigerant. Otherwise, the value on the
electric balance is influenced.
Step 5 Charge at least another 10 kg refrigerant (15 kg for a unit with a low-temperature unit). The
amount injected must not be more than the total injection amount. The rest refrigerant is to be
charged during power-on and commissioning.
Step 6 After refrigerant charging, close pressure gauge valves and the refrigerant steel vessel valve.
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5.3 Commissioning Preparations
5.3.1 Checking Before Power-on
1.
2.
3.
4.
5.3.2 Circuit Breakers
Before commissioning the NetCol5000-A, familiarize yourself with the names and positions
of all circuit breakers, as shown in
Issue 13 (2019-01-15)
After the injection is completed, tighten the needle valve bonnet, and check whether the needle valve
leaks by applying soap bubbles to the valve vent or using a halogen leak detector. If the valve leaks,
contact Huawei technical support.
The installation verification has been performed by referring to
Verification.
The input voltage and frequency of the primary power source are within the nominal
ranges, and the phase sequence is correct.
The inlet and outlet air for the outdoor unit is smooth.
Make sure that the doors, windows, floor, and ceiling of the datacenter room/container
environment are sealed well.
Copyright © Huawei Technologies Co., Ltd.
Figure 5-4.
5 Power-On Commissioning
3.12 Connections
142