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• The 48-300W Modular Switched Mode Rectifier System uses more than one live circuit. DC power may
be present at the outputs even if the system is disconnected from the mains supply.
• In high ambient temperature conditions, the surface of the shelf can be very hot to the touch.
• Battery installation and servicing should be done or supervised by personnel knowledgeable about
batteries and their safety procedures.
• Be extra cautious when connecting or adjusting battery cabling. An improperly connected battery cable
or an unconnected battery cable can result in arcing, fire or possible explosion.
• Use new batteries when installing a new unit. Verify that they are all the same battery type with identical
date codes.
• Always replace batteries with ones of identical number, type and rating. Never install old or untested
batteries. One sealed lead-acid battery is rated to a maximum voltage of 12Vdc.
• A battery that shows signs of cracking, leaking or swelling must be replaced immediately by authorized
personnel using a battery of identical type and rating.
• Keep the chassis area clear and dust-free during and after installation.
• Keep walkways free of tools to ensure that others cannot fall over them.
• Do not work on the unit or connect or disconnect cables during periods of lightning activity.
• A battery can present a risk of electrical shock and high short-circuit current. The following precautions
should be observed when working on 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.
Disconnect charging source prior to connecting or disconnecting battery terminals.
Determine if the battery is inadvertently grounded, remove source from ground. Contact with any
part of a grounded battery can result in electrical shock. The likelihood of such a shock can be
reduced if such grounds are removed during installation and maintenance (applicable to equipment
and remote battery supplies not having a grounded supply circuit).
• Never let live battery wires touch the 48-300W Modular Switched Mode Rectifier System, the enclosure
or any other metal objects. This can cause a fire or explosion.
• Never dispose of batteries in a fire or furnace. The batteries may explode. Follow the manufacturer’s
directions and check with your local jurisdictions for safe battery disposal.
• Before plugging the batteries to the 48-300W Modular Switched Mode Rectifier System, make sure the
polarity is correct.
• If the batteries have been in storage for more than 3 months, recharge them for at least 24 hours then
test them with a load before installation.