FusionModule800 Smart Small Data Center
Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
After removing cables, wrap exposed terminals with insulation tape and do not block cable
labels. If cable labels are blocked, cables may be connected incorrectly.
Step 2 Locate the faulty UPS between the two UPSs.
Step 3 Turn off the battery switch, or remove the wiring terminal between the battery pack and the
faulty UPS.
Step 4 Turn off the corresponding UPS input and output switches. Use a multimeter to check
whether the UPS input and output terminals and battery terminals are disconnected.
Step 5 Remove the rear cover from the UPS, and remove the input and output power cables, battery
cable, and signal cable.
Wrap the exposed cable with insulation tape.
Step 6 Remove screws from the UPS front panel, and pull out the UPS.
Step 7 Install the new UPS and screw it to the cabinet.
Step 8 Connect the input power cable, output power cable, and signal cables to the UPS in sequence.
Check whether the cable labels are consistent with the silk screens on the UPS, and whether
all cables are connected.
Step 9 Close the UPS input and output switches. If the UPSs are connected in parallel, set parallel
parameters before closing the switches.
Step 10 Check whether the UPS generates abnormal alarms. If there are alarms, clear them and start
the UPS.
Step 11 Close the battery switch.
----End
Scenario with Two UPSs (Two Faulty)
Step 1 Ensure that the TN system is reliably grounded, and that the main ground cable of the Smart
Module is reliably connected.
After removing cables, wrap exposed terminals with insulation tape and do not block cable
labels. If cable labels are blocked, cables may be connected incorrectly.
Step 2 Turn off the battery switch, or remove the wiring terminal between the battery pack and the
faulty UPS.
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