Huawei NetCol5000-A021 User Manual page 200

In-row air cooled smart cooling product
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NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
After removing the valve, seal the suction vent immediately to ensure that the system is clean
and that moisture does not enter the pipe.
3.
4.
5.
Step 6 Use a 13# ratchet wrench (or solid wrench) to remove the three M8 bolts that secure the
compressor and support, and remove the compressor.
Seal the screw thread joints in the pipe using sealant.
After the installation, check that the input power cables of the compressor are in the same
phase sequence as those of the wiring terminals.
Step 7 Secure the new compressor to the support using a solid wrench, secure the compressor
support to the cabinet interior using a 13# socket wrench, and install an electric heating belt in
the cabinet.
Step 8 Apply red glue from the second to fourth circles of the inner screw threads of the discharge
angle valve. Use two 30# adjustable wrenches to secure the angle valve nut and pipe nut on
the discharge side, as shown by (3) in
adjustable nut.
Installation of the suction angle valve is the same as that of the discharge angle valve.
Step 9 Vacuumize the system and precharge refrigerant by following the instructions in
Vacuumization and Refrigerant
Step 10 Connect the compressor cables, check that the phase sequence is correct and then power on.
Continue with charging refrigerant by following the procedure of commissioning the
compressor in section
requirements. After verifying that the system is working properly, exit from the diagnostic
mode.
Step 11 Install the air filter and close the rear door.
----End
Issue 03 (2020-01-10)
Heat the discharge angle valve joints using a heat gun for 10 minutes, and then use two
30# adjustable wrenches to secure the angle valve nut and pipe nut on the discharge side,
as shown by (3) in
Figure
nut until the pipe is separated from the angle valve. After removing the valve, seal the
exhaust vent immediately.
Use a 13# ratchet wrench (or solid wrench) to remove the two M8 screws shown by (4)
in
Figure 6-8
below the compressor support.
Pull out the compressor and support, as shown by (5) in
5.5 Commissioning Procedure
Copyright © Huawei Technologies Co., Ltd.
6-8, and use a 30# adjustable wrench to loosen the angle valve
Figure
6-8, and use a torque wrench to tighten the
Precharging.
until the total refrigerant volume meets
6 System Operation and Maintenance
Figure
6-8.
5.2
192

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