4.5 Maintenance, Service and Faults
• The UPS system operates with hazardous voltages. Repairs should be carried out only by a qualified technician
• CAUTION - risk of electric shock. Even after the unit is disconnected from the mains (building wiring outlet), components
inside the UPS system are still connected to the battery and electrically live and dangerous.
• Before carrying out any kind of services and/or maintenance, disconnect the batteries and verify that no current is
present and no hazardous voltage exists in the terminals of high capability capacitor such as BUS-capacitors.
• To avoid electrical shock, turn off the unit and unplug it from the AC power source before servicing the battery
• Only persons who are adequately familiar with batteries and with the required precautionary measures may replace
batteries and supervise operations. Unauthorized persons must be kept well away from the batteries.
• CAUTION - risk of electric shock. The battery circuit is not isolated from the input voltage. Hazardous voltages may occur
between the battery terminals and the ground. Before touching, please verify that no voltage is present.
• Batteries may cause electric shock and have a high short-circuit current. Please take the precautionary measures
specified below and any other measures necessary when working with batteries:
• Remove wristwatches, rings and other metal objects
• Only tools with insulated grips and handles.
• When changing batteries, install the same number and same type of batteries .
• Do not attempt to dispose of batteries by burning them. This could cause battery explosion
• Do not open or destroy batteries. Escaping electrolyte can cause injury to the skin and eyes. It may be toxic
• When replacing batteries, use the same type and number of batteries or battery packs
• A battery can be at risk for electrical shock and high - short circuit current.
• The following precautions should be observed when working on batteries:
a. Remove watches, rings, or other metal objects.
b. Use tools with insulated handles.
c. Wear rubber gloves and boots.
d. Do not lay tools or metal parts on top of batteries.
e. Disconnect charging source prior to connecting or disconnecting battery terminals.
f. Determine if battery is inadvertently grounded. If inadvertently grounded, remove source from ground. Contact with any
part of a grounded battery can result in electrical shock. The likelihood of such shock can be reduced if such grounds are
removed during installation and maintenance
Summary of Contents for UPS1RM2U3000-1E
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