Vacuumizing And Precharging Refrigerant - Huawei FusionCol8000-E24 User Manual

FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
Figure 12-34 Injecting nitrogen to preserve the pressure
(1) Nitrogen cylinder
(4) High pressure gauge
The outlet pressure of the reducing valve should be within 3.0 MPa; otherwise,
components may be damaged.
Step 2 Open the pressure gauges and reducing valve. Inject 3.0 MPa nitrogen and
preserve the pressure for 24 hours. The system pressure should stay constant
under unchanging ambient temperature conditions. If there is considerable
temperature change, perform the test again.
The outlet pressure of the reducing valve should be within 3.0 MPa; otherwise,
components may be damaged.
Step 3 If the pressure decreases, apply soapy water or use a halogen leak detector to
check for any leakage. If the pressure is stable, expel the nitrogen.
----End

12.15.4 Vacuumizing and Precharging Refrigerant

During the commissioning of the smart cooling product, ensure that no comburent
substance (such as air or additive) enters the smart cooling product system. The
relevant party will be liable for any risks and losses caused due to violation.
Issue 03 (2021-04-20)
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(2) Reducing valve
(5) Low pressure needle valve
12 Component Replacement
(3) Low pressure gauge
(6) Liquid pipe needle valve
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