Huawei NetCol5000-A050 User Manual page 283

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Procedure
Step 1 Tap Shutdown on the home screen of the controller. Turn off the active power
switch QF1, standby power switch QF2 (you do not need to turn off 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 filter dryer, as shown in
● 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.
Issue 08 (2021-09-17)
NO TICE
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Copyright © Huawei Technologies Co., Ltd.
Figure 11-29.
11 Parts Replacement
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