Huawei NetCol5000-A050 User Manual page 172

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Step 4 Charge refrigerant on the basis of the precharging.
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Issue 08 (2021-09-17)
If there is no low temperature component, open the low-pressure valve of the
pressure gauge, and charge the remaining refrigerant from the low-pressure
needle valve in small flow or intermittently.
Figure 6-34 Precharging refrigerant when no low temperature component is
configured
(1) Refrigerant cylinder
(4) Connection nut
If there is a low temperature component, open the low-pressure valves of
pressure gauge 1 and pressure gauge 2, and charge the remaining refrigerant
from the low-pressure needle valves in small flow or intermittently.
Figure 6-35 Precharging refrigerant when a low temperature component is
configured
(1) Refrigerant (2) Electronic scale
cylinder
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(2) Electronic scale
(5) Low-pressure needle
valve
(3) Pressure gauge 1 (4) Pressure gauge 2
6 Power-On Commissioning
(3) Pressure gauge
(6) Exhaust pipe needle valve
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