UPS IST7 (10KVA-40KVA)
User Manual
5 Use and Operation
69
will lead to the inverter fault. If the circulating current is larger than 3A, please report it to our
company to maintain it.
Switch on the total output breaker of UPS, each output branch breaker, and then start the load one by
one.
5.4.2 Shut Down Parallel System
Generally, it isn't recommended to start or close parallel system frequently.
Shut down parallel UPS one by one.
5.4.3 Exit Parallel System
When one UPS in parallel system fault, it will exit from parallel system automatically with
sound & light alarm. At that time, the fault UPS will be exited from parallel system completely
to achieve online hot maintenance or replacement.
5.5 Periodic Preventative Maintenance
To improve the efficiency and reliability of the UPS, perform the following maintenance
regularly:
Clean the UPS by dry cloth regularly. Don't use liquid or spray cleaner. Before cleaning,
shut down the UPS.
Check if the wiring of input and output is firmly and well connected.
Check the working status of cooling fans regularly. Prevent sundries from blocking the air
outlet. If damaged, please replace it in time.
Check the battery voltage and the working status of UPS regularly to discover fault timely.
5.6 Battery Maintenance
The working life of battery is based on the 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.
When selecting battery box, please pay attention to following items: