UPS2000-A-(6 kVA-10 kVA) 
User Manual 
 
Copyright © Huawei Technologies Co., Ltd. 
 
 
7.1.2 Quarterly Maintenance 
Table 7-2 Quarterly Maintenance 
 
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. 
Check that all units are 
operating properly by 
observing the status icons on 
the LCD, all operating 
parameters are within their 
normal ranges, and no fault 
or alarm information is 
displayed in active alarm or 
historical alarms. 
If an alarm is present, rectify 
the fault by checking the 
device status and 
parameters. 
Wipe the cabinet surface 
using a white paper and the 
paper does not turn black. 
Clean the dust, especially in 
the front panel. 
Check the output voltage 
level and frequency, the 
number of batteries and the 
actual battery capacity. 
Power cables and terminals 
(between the UPS and 
external power distribution 
equipment) 
The insulation layer of 
cables are intact and 
terminals are free from 
noticeable sparks. 
 
Replace the cables. 
 
Secure the output 
terminals. 
 
7.1.3 Yearly Maintenance 
Table 7-3 Yearly Maintenance 
 
Ambient temperature: 
0–40°C 
 
If the humidity and 
temperature are