UTY 618
2
RESTRICTED
November 1995
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS!
This publication contains important instructions that you should follow during battery replacement.
CAUTION
Full voltage and current are always present at the battery terminals.
The batteries used in this system can produce dangerous voltages, extremely high currents, and a risk
of electric shock. They may cause severe injury if the terminals are shorted together or to ground
(earth). You must be extremely careful to avoid electric shock and burns caused by contacting battery
terminals or shorting terminals during battery installation. Do not touch uninsulated battery terminals.
A qualified technician or electrician who is familiar with battery systems and required precautions must
service the batteries. Any battery used with this UPS shall comply with the applicable requirements for
batteries in the standard for emergency lighting and power equipment, UL 924. Batteries must be
replaced with BEST battery number BAT-XXXX or equivalent. The installation must conform to
national and local codes.
Keep unauthorized personnel away from batteries.
The technician or electrician must take these precautions:
1.
Wear protective clothing and eye wear. Batteries contain caustic acids and toxic materials and can
rupture or leak if mistreated. Remove rings and metal wristwatches or other metal objects and
jewelry. Do not carry metal objects in your pockets where the objects can fall into the battery
cabinet.
2.
Tools must have insulated handles and must be insulated so that they will not short battery
terminals. Do not allow a tool to short a battery terminal to another battery terminal or to the
cabinet at any time. Do not lay tools or metal parts on top of the batteries, and do not lay them
where they could fall onto the batteries or into the cabinet.
3.
When connecting cables, never allow a cable to short across a battery’s terminals, the string of
batteries, or to the cabinet.
4.
Align the cables on the battery terminals so that the cable lug will not contact any part of the
cabinet even if the battery is moved. Keep the cable away from any sharp metal edges.
5.
Install the battery cables so they cannot be pinched by the battery cabinet door or UPS covers.
