UPS5000-E-(40 kVA-320 kVA)
User Manual
6 Routine Maintenance
Issue 10 (2015-09-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
196
6
Routine Maintenance
6.1 UPS Maintenance
Only trained personnel are allowed to perform maintenance. Before performing operations
on the UPS, wear electrostatic discharge (ESD) clothes, ESD gloves, and an ESD wrist
strap. Remove conductive objects such as jewelry or watches during operations to avoid
electric shocks or burns.
Use insulated tools when maintaining internal devices. Only trained personnel are allowed
to perform maintenance. Customers are not allowed to maintain components behind
protective covers that can be removed only using tools. If the components are to be
maintained, contact Huawei technical support.
Only maintenance engineers can maintain power modules and bypass modules.
Maintain UPSs regularly based on the following requirements. Otherwise, the UPSs may
fail to operate properly and the service life may be shortened.
6.1.1 Monthly Maintenance
Table 6-1
Monthly Maintenance
Check Item
Expected Result
Troubleshooting
Operating environment
Ambient temperature:
0–40°C
Humidity: 0–95% RH
(non-condensing)
If the humidity and
temperature are
abnormal, check the air
conditioner status.
If the input voltage is
abnormal, check the
power grid status and
input cable connection.
Liquid crystal display
(LCD)
According to the status
icons on the LCD, all units
are operating properly. No
If an alarm is present, rectify
the fault by checking the
device status and
