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9
Maintenance
Batteries, fans and capacitors shall be replaced at the end of their lives.
Hazardous voltage and high temperature metal parts inside even if the UPS is disconnected.
Contact may cause electric shock and burns. All operations except replacing battery fuses shall
be carried out by the authorized technical personnel only.
Some parts inside the UPS (terminals, EMC filters and measurement circuits) are still energized
during maintenance bypass operation. In order to deenergize all UPS parts, circuit breakers on
mains and bypass mains distribution panels feeding the UPS and circuit breakers on external
battery cabinet shall be brought to “OFF/0” position. Internal batteries shall also be isolated
from the system.
9th1
Battery fuses
Bringing the battery circuit breaker to “I”/“ON” position before seeing “NORMAL” message on the
LCD may cause battery fuses to blow out.
Battery fuses shall only be replaced with Gould 22x58 aR 660V ultra fast fuse of same rating or
equivalent.
9th2
Batteries
Battery life strongly depends on the ambient temperature. There are also other factors like the number of
charge-discharge cycles and discharge depth.
Battery life is between 3-10 years if the ambient temperature is between 10 – 20
°
C. Performing battery
test can provide you information about battery condition. (See “battery test” section for more information
on battery test)
Danger of explosion and fire if the batteries of the wrong type or number are used.
Do not dispose of batteries in a fire. The batteries may explode. Do not open or mutilate
batteries. Released electrolyte is harmful to the skin and eyes. It may be toxic.
9th3
Fans
The life of fans used to cool the power circuits depends on the usage and environmental conditions.
Preventive replacement by authorized technical personnel every four years is recommended.
9th4
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 replacement by authorized technical personnel every five years is recommended.
