Replacing The Welded Filter Dryer (Welding Connection) - Huawei FusionDC1000A Maintenance Manual

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)

4.2.2.9 Replacing the Welded Filter Dryer (Welding Connection)

Prerequisites
●
●
●
●
Context
Figure 4-27
Figure 4-27 Position of the filter dryer
(1) Liquid pipe NTC
temperature sensor
(4) Welding point B
Procedure
Step 1 Tap Shutdown on the LCD home screen and turn off the smart cooling product
switch in the PDC and the compressor switch QF3.
Issue 01 (2021-04-20)
The filter dryer needs to be replaced.
A spare filter dryer of the same model is available and functional.
Tools: welding equipment, refrigerant retrieval device (configured based on
local conditions), Phillips screwdriver, nitrogen cylinder, refrigerant tank,
vacuum pump, pressure gauge, leather hose, protective gloves
Preparation: Power off the indoor unit and reclaim all refrigerant from the
system.
shows the position of the filter dryer.
Copyright © Huawei Technologies Co., Ltd.
(2) Welding point A
(5) Welding point C
4 Parts Replacement
(3) Filter dryer
86