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8. S
M
YSTEM
AINTENANCE
Before proceeding with system maintenance, be sure to review and understand all
of the SAFETY PRECAUTIONS in this manual!
Verify that the output breaker is in the off/open position before servicing the
system.
8.1 B
R
ATTERY
EPLACEMENT
When batteries are replaced they must be properly installed paying special attention
to terminal polarity orientation! If wired incorrectly it will cause a short in the
system and can result in electrical shock, severe burns, fire and possible death! Be
sure to review the system schematics before terminating any battery cables.
Caution: Risk of explosion if batteries are replaced by an incorrect type.
Do not dispose of batteries in a fire. The batteries may explode. Contact your local
hazardous waste or recycling center for battery disposal requirements.
Do not discard batteries in the trash. This product contains sealed lead acid
batteries. Contact your local hazardous waste or recycling center for battery
disposal requirements.
1. Prepare the new battery for installation. Verify that the battery is the same type and amp-
hour rating as the batteries that are in the system.
2. Using a digital voltmeter, measure the battery voltage to verify that it is 12.4 VDC or above.
3. Use a brass wire brush or abrasive pad to polish the battery terminals.
4. Apply no-ox type terminal grease to the battery terminals to avoid corrosion.
5. Disconnect the UPS from the battery string by turning off (opening) the circuit breaker in
the battery cabinet.
6. Remove the center jumper on the battery string to reduce the voltage. If replacing all
batteries, continue reducing the voltage by removing the inter-shelf jumpers.
7. Disconnect the cables from the battery to be replaced.
8. Remove the bad battery. Depending on battery location, it may be necessary to remove
additional batteries to safely gain access to the bad battery.
9. Put the new battery into place. Make sure new battery is installed properly regarding
polarity orientation. Use the supplied wiring drawing found inside the battery cabinet door
to verify the cabinet wiring.
10. Reconnect the cables to battery and make sure the connections are properly torqued.
4/16/2014
17
BC29 B
C
ATTERY
ABINET
755-00087 R03
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