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10. Preventive Maintenance
Maintenance includes fully control of all the electronic and mechanical components in UPS. And they need-
ed to be replaced after their lifetime is over. Periodic maintenance ensures to improve UPS’s efficiency and
to extend life-time. LEGRAND recommends a minimum yearly periodic maintenance visit by authorized
LEGRAND UPS Technical Service.
10.1.
Batteries
The life of batteries strongly depends on the usage and environmental conditions. (ambient temperature,
frequency of electricity cuts, etc.). There are also other factors like the number of charge-discharge cy-
cles and discharge depth. Not to come across any undesired condition during electricity cut, the batteries
should be maintained periodically by authorized Technical Personnel.
All the maintenance operations should be done by authorized technical service
personnel.
Do not open or mutilate batteries. Released electrolyte is harmful to the skin and
eyes. It may be toxic.
10.2.
Fans
The life of fans used to cool the power circuits depends on the usage and environmental conditions.
Please look at Appendix-3 Technical Specifications for detailed environment conditions.
Preventive maintenance shall be done by authorized Technical Personnel periodically.
10.3.
Capacitors
The life of the electrolytic capacitors on the DC BUS and the capacitors used for output and input filtering
purposes depends on the usage and environmental conditions.
Preventive maintenance should be done by authorized Technical Personnel periodically.
When replacing batteries; use the same quantity and type that were originally fitted.
Batteries must always be disposed of according to local environmental laws.
