Yes dude, there's a particular way of using ur UPS to increase its long life and to protect ur PC from power surges from any abstract power voltage.
Steps to follow and to keep in mind:-
1.)When u switch OFF ur UPS,please do not again switch it ON all of a sudden, wait for 5-6 seconds before doin so(and vice versa) coz this will prevent any strain on the UPS battery and increase its long life.
2.)Once in a month or say 15 days,turn OFF ur UPS for half an hour and then turn it ON to recharge the batery.By doin so,the battery will always be in a good condition and will be in a state of CHARGE as well as DISCHARGE and the power failures will be prevented most efficiently by ur UPS.
3.)DO not overload the UPS other than its recommended rating i.e avoid connecting ur Printer/scanners and telephone cables to ur UPS otherthan the PC wire if the UPS rating doesnt supports it,Coz the bottom line is to prevent ur PC and its components from failure(wich is a high priority) otherthan ur Printers/scanners etc.
4.)Always check for loose connections and keep the UPS well ventilated (by keeping normal surrounding air to flow into the device).Do not stack books,modem or any other devices or components on top of ur UPS device.
these r sum points wich u can follow to make ur UPS in an ever running condition....
(if i hv mentioned sumthing wrong or inaccurate in this reply,PLZ guys feel free to correct me by "quoting" my mistakes in ur replies)

thanx,
cheers n peace....