FusionModule800 Smart Small Data Center
Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Context
Tools: Phillips screwdriver, torque wrench, 557 glue, refrigerant retrieval device
(required based on local conditions).
Preparation: Power off the outdoor unit and empty the system of refrigerant.
Procedure
Step 1 Shut down the air conditioner over the EMS.
Method 1: Log in to the ECC800 mobile phone or pad app as admin.
a. Choose Home.
b. Tap the cabinet that houses the air conditioner in the micro-module view.
c. Tap the air conditioner to be set in the cabinet layout diagram.
d. Choose Real-time Data > OFF.
Method 2: Log in to the ECC800 WebUI as admin. Choose Monitoring > Air
Conditioner > NetCol5000-A0104 > Controls > Ctrl Info, set On/off status on
EMS > Off, and then click Submit.
0104 in NetCol5000-A0104 is variable and subject to changes with the air conditioner connection
sequence. The displayed value prevails.
Step 2 Disconnect the power supplies from the air conditioner control unit and the outdoor unit after
the air conditioner shuts down over the EMS.
Step 3 Reclaim all the 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 4 Open the top cover, front panel, and left front panel.
Step 5 Remove the safety valve using a torque wrench. Figure 5-39 shows the position of the safety
valve.
Step 6 Apply 557 glue to the threads of the safety valve.
Step 7 Tighten the safety valve to a torque of 60 N·m using a torque wrench.
Step 8 Perform a leakage test with nitrogen again.
Step 9 After checking that the air conditioner does not leak, vacuumize the air conditioner and
charge refrigerant.
Step 10 Reinstall the front panel, left front panel, and top cover.
----End
5.4 Replacing Monitoring System Components
After replacing a component of the monitoring system, set parameters for the new component
to ensure proper communication.
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