PowerWalker Battery Pack for VI 1000_1500RT LCD - Manual (Page 27)

EN
6. UPS Maintenance
6.1 UPS and Battery Care
For the best preventive maintenance, keep the area around the UPS clean and
dust-free. If the atmosphere is very dusty, clean the outside of the system with a
vacuum cleaner. For long battery life, keep the UPS at an ambient temperature of
25°C (77°F)
6.2 Storing the UPS and Batteries
When the UPS is intended to store for a long period, recharge the battery every 6
months by connecting the UPS to utility power. The batteries charge to 90% capacity
in approximately 4 hours. However, it is recommended that the batteries charge for
48 hours after long-term storage.
6.3 Time to Replace Batteries
When LCD backlight turns to red, the screen displays “bTWK” and there is a
continuous sounding, the battery may need to be replaced. Please check the battery
connection or contact your local dealer to order new battery.
WARNING:
Turn off the UPS and disconnect the utility power cord from the wall outlet.
Servicing should be performed by qualified service personnel knowledgeable
of batteries and required precautions. Keep unauthorized personnel away from
batteries
Batteries can present a risk of electrical shock or burn from high short
circuit current. The following precautions should be observed:
1. Remove watches, rings, or other metal objects.
2. Use tools with insulated handles.
3. Do not lay tools or metal parts on top of batteries.
4. Wear rubber gloves and boots.
5. Disconnect the charging source prior to connecting or disconnecting battery
terminal.
When replacing batteries, replace with the same type and number of
batteries or battery packs. Contact your service representative to order new