4 Operation and Maintenance
User Manual
36
Check if the wiring in the input and output are firmly and connect well.
Check the working status of cooling fans regularly. Prevent sundries from blocking the air outlet.
If any damage, please replace it in time.
Check the battery voltage and the working status of UPS regularly.
4.6 Battery Maintenance
The working life of battery is based on environment temperature and discharge times. Using battery
in the high temperature for a long time or discharging battery deeply will reduce the working life of
battery.
Charge battery for ten hours before using it. During charging, it can use the battery. If the battery
and charger are powered off at the same time, the discharging time will be less than the standard
value.
Generally, charge and discharge battery once every four to six months. Discharge battery till the
battery is under-voltage and power it off and then charge it. In the high temperature area, charge
and discharge battery once every two months. The charging time for the standard battery should
be more than ten hours every time.
If UPS hasn't been used for a long time, it is recommended to charge battery more than ten hours
every three months.
Generally, the working life of battery is three to five years. If battery failure, replace it early. The
battery replacement should be performed by authorized professional.
4.7 Maintenance Byass Mode(Only for UPS with Maintenance
Bypass)
When it needs to maintain UPS or replace battery, but it can't stop supplying power for load, switch
off UPS and transfer to bypass mode, dismantle the maintenance bypass cover and transfer the
maintenance bypass switch from maintenance bypass to bypass and then switch off mains breaker
and bypass breaker in the rear panel of UPS. Now, AC power draws through maintenance bypass
switch to supply power for load.
