Mitsubishi Electric 1100A Series Owner Technical Manual page 10

PRECAUTIONS FOR MAINTENANCE AND INSPECTION
The inside of the UPS must be inspected or repaired only by qualified personnel.
-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 power-off
If the battery ignites, do not use water to extinguish the fire. Instead, use a powder
(ABC) fire extinguisher.
-Use of water could cause the fire to grow.
Toxic diluted sulfuric acid in the battery.
-If electrolyte leaks from the unit, avoid contact with the skin or clothes.
-If electrolyte makes contact with the skin or clothes, wash it off thoroughly with clean
water.
-If electrolyte makes 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.
PRECAUTIONS FOR OPERATION
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 start or stop the inverter alone.
Extended shutdown.
-If the UPS is placed into stopped state for durations of the order of several months,
operate the converter for a day or two at monthly intervals. (Charge the batteries. 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 the stoppage of the inverter, voltage
remains applied to the internals of the equipment. Also, it takes about 5 minutes after
the stoppage of the converter for voltage across the DC circuit to dissipate to a safe
level in the range of 20V. Avoid contacting the live part of the equipment and the
supply side of the breaker because they stay energized in this way even after
equipment shutdown steps are performed.
MITSUBISHI ELECTRIC 1100 SERIES UPS
1100A SERIES UPS
OWNERS / TECHNICAL MANUAL
CAUTION
PRECAUTIONS FOR BATTERY
Page Number:
1-4