Context
Figure 6-9 shows the lter dryer before replacement. Figure 6-12 shows the lter
dryer after replacement.
Procedure
Step 1 Tap Shutdown on the LCD home screen and turn o the smart cooling product
switch in the PDC and the compressor switch QF3.
Exercise caution because the NetCol5000-A is still energized when it is being shut
down over the LCD.
Step 2 Reclaim all refrigerant from the system using a refrigerant retrieval device to
ensure that there is no pressure inside the system.
Discharge the refrigerant if the local laws and regulations allow.
Step 3 Remove the liquid pipe NTC temperature sensor shown by (1) in Figure 6-9.
Step 4 Remove the welded lter dryer, as shown in Figure 6-15.
● Use copper welding rods to weld the connection ports and check that the
welding joints are in good condition, without poor soldering.
● To avoid burning the internal components, other pipes, thermal insulation
foam, power cables, and labels, take protective measures, such as spreading
wet cloth, around the welding position.
● Do not use face-down bonding.
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 6 System Operation and Maintenance
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 241
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