8.5.15.4.1 Refrigerant Charge Amount Requirements
Table 8-7 Charge amount of refrigerant
Charge Amount of Refrigerant
FusionCol8000-E240H4
Standard amount (kg)
18.5
8.5.15.4.2 Vacuumizing
Prerequisites
NO TICE
● 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
(2) Pressure gauge
(3) Low pressure needle valve
(4) Liquid pipe needle valve
(5) Sight glass
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.
FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
8 System Maintenance
Issue 02 (2021-04-15)
Copyright © Huawei Technologies Co., Ltd.
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