Procedure
Step 1 Tap Shutdown on the home screen of the controller. Turn o the active power
switch QF1, standby power switch QF2 (you do not need to turn o QF2 for the
model with a single power supply), and drive switch QF3.
Exercise caution because the device is still energized after the LCD is shut down on
the screen.
Step 2 Recycle the refrigerant from the low-pressure needle valve and discharge pipe
needle valve to ensure that there is no pressure in the system. (If a low
temperature component is used, recycle the refrigerant from the liquid pipe needle
valve, low-pressure needle valve, and discharge pipe needle valve.)
Step 3 Remove the
lter dryer, as shown in Figure 11-29.
● During welding, use a silver copper welding rod containing 5% silver. 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 when welding.
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 11 Parts Replacement
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 273
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