Figure 63. Warning label
Since each battery string is an energy source in itself, opening the battery circuit breaker does not de-
energize the voltage within the battery string.
DANGER
Do not attempt to access any internal area of the battery string. Voltages are
always present in the battery strings. If you suspect that a battery string needs
service, contact your service representative.
Obey these precautions when working on or around batteries:
• Remove watches, rings, or other metal objects.
• Use tools with insulated handles.
• Wear rubber gloves and boots.
• Do not lay tools or metal parts on top of batteries or battery cabinets.
• Before you connect or disconnect a terminal, first disconnect the charging source.
• Determine if the battery is inadvertently grounded. If it is, remove the source of the ground. Contact
with any part of a grounded battery can result in an electrical shock. The likelihood of such a shock is
reduced if such grounds are removed during installation and maintenance.
• When you replace batteries, use the same number of sealed, lead-acid batteries.
• Discard batteries according to your local codes for disposal requirements.
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The UPS system requires very little preventive maintenance. However, examine the system regularly to
make sure that the units are operating correctly and that the batteries are in good condition.
It is recommended that the service and maintenance work is performed by qualified service personnel
authorized by Eaton.
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Do the following maintenance procedures daily.
1. Examine the area surrounding the UPS system. Make sure that the area is not cluttered and allows
free access to the unit.
EATON 93T USER’S AND INSTALLATION GUIDE 614-40270
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December 2023 www.eaton.eu 8877