Eaton 91PS User And Installation Manual

Also see for 91PS: User and installation guide Safety and installation quick guide Safety and installation quick guide User and installation guide

Figure 38. Warning labelSince each battery string is an energy source in itself, opening the battery circuit breaker does not de-energize the voltage within the battery string.DANGERDo not attempt to access any internal area of the battery string. Voltages arealways present in the battery strings. If you suspect that a battery string needsservice, 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. Contactwith any part of a grounded battery can result in an electrical shock. The likelihood of such a shock isreduced 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.88..33 PPrreevveennttiivvee mmaaiinntteennaanncceeThe UPS system requires very little preventive maintenance. However, inspect the system periodically toverify that the units are operating normally and that the batteries are in good condition.The majority of the service and maintenance work must be performed by service personnel qualified byEaton. Only the actions described in Sections 8.3.1 Daily maintenance and 8.3.2 Monthly maintenance andcan be done by the user.See the Eaton 91PS/93PS UPS 8–10 kW Service Manual for further information.88..33..11 DDaaiillyy mmaaiinntteennaanncceeDo the following steps every day:EATON 91PS/93PS UPS USER’S AND INSTALLATIONGUIDEP-164000672 - 005 2023 www.eaton.eu 7788