Mitsubishi Electric 1100B Series Owner Technical Manual page 10

PRECAUTIONS FOR MAINTENANCE AND INSPECTION
 The inside of the UPS must be inspected or repaired by qualified personnel only.
-Failure to observe this could lead to electrical shocks, injuries, burns, smoke generation or
fires.
 Periodically replace the battery.
-Batteries that have exceeded the replacement life could lead to fires from electrolyte
leakage or fire ignition.
 Contact the dealer or service company for unit maintenance and repairs, and for the
replacement of defective parts.
-Opening the cover could lead to electrical shocks or burns.
-Do not touch high temperature parts such as radiation fins. Those high temperature parts
may cause burn injuries even after the power is turned off.
 If the battery ignites, do not use water to extinguish the fire. Instead, use a powder
(ABC) fire extinguisher.
-Using water could cause the fire to grow.
 Toxic diluted sulfuric acid exists in the battery.
-If electrolytes leak from the unit, avoid contact with the skin or clothes.
-If electrolytes make contact with the skin or clothes, wash it thoroughly off with clean water.
-If electrolytes make contact with the eyes, rinse immediately and thoroughly with clean
water, and then see a doctor. The presence of sulfuric acid in the eyes could lead to
blindness, and adherence to skin could lead to burns.
▲ For other stored energy systems, refer to the supplement.
 Operating method.
-To obtain stable operation, it is advisable that the UPS is operated on a continuous basis.
Even if you start or stop the equipment at daily intervals, keep the converter running and
only start or stop the inverter.
 Extended shutdown.
-If the UPS is stopped for several months, operate the converter for a day or two at monthly
intervals.
-Charge the batteries; if left uncharged for a long time, they can run down due to
self-discharge.
 Do not touch live parts even after equipment is shut down.
-Because the converter is kept operational after stopping the inverter, voltage remains
applied to the internals of the equipment. Also, it takes about 5 minutes after stopping the
converter for voltage across the DC circuit to dissipate to a safe level, which is in the range
of 20V. Avoid contacting the live parts of the equipment and the supply side of the breaker
because they stay energized even after equipment shutdown steps are performed.
1100B SERIES UPS
OWNERS / TECHNICAL MANUAL
CAUTION
PRECAUTIONS FOR BATTERY▲
PRECAUTIONS FOR OPERATION
MITSUBISHI ELECTRIC 1100B SERIES UPS
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