Emerson 250-400kVA Manuel D’Utilisation

Servicing of batteries should be performed or supervised by personnel knowledgeable of batteries and 

the required precautions. Keep unauthorized personnel away from batteries.
When replacing batteries, use the same number and type of batteries.

Lead-acid batteries can present a risk of fire because they generate hydrogen gas. In addition, the 

electrical connections must be protected against accidental short circuits which can cause sparks. The 

following procedures should be followed:

• DO NOT SMOKE when near batteries.
• DO NOT cause flame or spark in battery area.
• Discharge static electricity from body before touching batteries by first touching a grounded metal 

surface.

• After replacing battery jars in a battery cabinet, replace the retaining straps that hold the jars in 

place on the shelves. This will limit accidental movement of the jars and connectors should the 

cabinet ever need to be repositioned or relocated. 

Regular maintenance of the battery module is an absolute necessity. Periodic inspections of battery 

and terminal voltages, specific gravity and connection resistance should be made. Strictly follow the 

procedures outlined in the battery manufacturer’s manual, available on the manufacturer’s Web site.
Valve-regulated lead-acid (sealed-cell) batteries do require periodic maintenance. Although mainte-

nance of electrolyte levels is not required, visual inspections and checks of battery voltage and connec-

tion resistance should be made.

Risk of equipment damage. Batteries should be cleaned with a dry cloth or a cloth lightly 

moistened with water. Do not use cleaners on the batteries. Solvents can make the battery 

cases brittle.

Risk of electric shock, explosive reaction, hazardous chemicals and fire. Can cause equipment 

damage, personal injury and death.
Lead-acid batteries contain hazardous materials. Batteries must be handled, transported and 

recycled or discarded in accordance with federal, state and local regulations. Because lead is a 

toxic substance, lead-acid batteries must be recycled rather than discarded.
Do not dispose of battery or batteries in a fire. The battery may explode.
Do not open or mutilate the battery or batteries. Released electrolyte is harmful to the skin 

and eyes. It is toxic.

Risk of electrical shock and high short circuit current. Can cause equipment damage, personal 

injury and death.
The following precautions must be observed when working on batteries:
• Remove watches, rings and 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 whether the battery is grounded. If it is grounded, remove source of ground. 

Contact with any part of a grounded battery can result in electrical shock. The likelihood of 

such shock will be reduced if such grounds are removed during installation and mainte-

nance.