H aza rdous battery v oltage pre sent b ehind covers
3. Observe the following safety precautions when working on the batteries:
a. The battery shall be firmly and reliably connected. After the connection is completed, the screw connections between all the
terminals and the batteries shall be calibrated. The requirements on torque specified in the specifications or user manual provided
by the battery manufacturer shall be satisfied. The connections between all the wiring terminals and the batteries shall be
inspected and tightened at least once a year. Otherwise it may cause fire!
b. The battery appearance must be inspected before accepting and using the battery. If there exists any package damage, dirty
battery terminal, terminal erosion, rust, or enclosure crack, deformation or liquid leakage, replace it with a new battery. Otherwise,
battery capacity reduction, electric leakage or fire may be caused.
Battery damaged during handling or transportation After a week of normal charge/discharge experiment
c. The battery is very heavy. Please use proper method to move and lift the battery, so as to prevent any damage to human being or
the battery terminal. Severe damage to the battery may cause fire.
d. The battery connecting terminal shall not be subject to any force, such as the pulling force or twisting force of the cable, otherwise,
the internal connection of the battery may be damaged. Severe damage to the battery may cause fire.
e. The battery shall be installed and stored in a clean, cool and dry environment. Do not install the battery in a sealed battery
chamber or a sealed room. The battery room ventilation shall at least meet the requirement of EN50272-2001. Otherwise, battery
bulging, fire or even human injury may be caused.
f. The battery shall be installed far away from the heating products (e.g. transformer), used or stored far away from any fire source,
and shall not be burnt or put into fire for heating. Otherwise, battery leakage, bulging, fire or explosion may be caused.
g. Do not directly connect any conductor between the positive and negative terminals of the battery. Remove the finger rings, watch,
necklace, bracelet and other metal items before operating the battery, and ensure that the tools (e.g., wrench) are covered with
insulating material. Otherwise, battery burning, human death/injury or explosion may be caused.
h. Do not disassemble, modify or demolish the battery. Otherwise, battery short circuit, liquid leakage or even human injury may be
caused.
i. Clean the battery enclosure with the wringed wet cloth. To avoid any static or arcing, do not use dry cloth or duster to clean the
battery. Do not use the organic solvent (such as thinner, gasoline, volatile oil) to clean the battery. Otherwise, the battery enclosure
may be cracked. In worst case, fire may be caused.
j. The battery has diluted sulfuric acid. In normal use, the diluted sulfuric acid will be absorbed to the baffle and polar plate of the
battery. However, if the battery is damaged, the acid may leak from the battery. Therefore, personal protective equipment (e.g.,
protective glasses, rubber gloves and apron) must be used when operating the battery. Otherwise, if the diluted sulfuric acid
enters the eyes, blindness may be caused; if it contacts the skin, the skin may be burnt.
k. The battery may have short circuit, electrolyte dry-up or positive pole erosion failure at the end of its life. If it is still used under this
state, the battery may have thermal runaway, bulging or liquid leakage. Please replace the battery before it turns into this state.
l. Before connecting or disconnecting the battery connection cables, please isolate the charging power.
m. Check if the battery has been unexpectedly earthed. If this is the case, remove the earth connection. Contact with any part of the
earthed battery may result in an electric shock.
7 Battery
122
Vertiv™ Liebert® EXM2 UPS User Manual
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