Refrigerant Charge Amount Requirements; Vacuumizing - Huawei FusionCol8000-E240 User Manual

FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual

8.5.15.4.1 Refrigerant Charge Amount Requirements

Table 8-7 Charge amount of refrigerant
Charge Amount of Refrigerant
Standard amount (kg)

8.5.15.4.2 Vacuumizing

Prerequisites
● Before vacuumizing, check that the refrigerant pipe system has passed the air
tightness test and does not leak.
● Before vacuumizing, ensure that all connectors on the device are tightened.
● System high pressure may occur if the system is not vacummized or is not
thoroughly vacummized. Therefore, ensure that the system is thoroughly
vacummized.
Procedure
Step 1 Connect the pressure gauge and vacuum pump to vacuumize the device.
Figure 8-32 Vacuumizing
(1) Vacuum pump
(4) Liquid pipe needle valve
Step 2 In the beginning, the vacuum pump makes loud noises and exhausts white smoke
from the exhaust vent. After 10 minutes, if it still exhausts white smoke, observe it
for another 10 minutes because the cooling system may not be sealed properly or
there may be too much residual refrigerant or water in the cooling system.
Issue 02 (2021-04-15)
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FusionCol8000-E240H4
18.5
(2) Pressure gauge
(5) Sight glass
8 System Maintenance
(3) Low pressure needle valve
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