NFS2-640/E Installation Manual —
P/N 52741:P2 7/10/14
63
Battery Checks and Maintenance
Testing the System
•
Remove AC power, activate an Initiating Device Circuit through an alarm initiating device or
an addressable initiating device on the SLC, and check that programmed active notification
appliances sound, and alarm indicators illuminate. Measure the battery voltage with
notification appliances active. Replace any battery with a terminal voltage less than 21.6 VDC
and reapply AC Power.
•
Return all circuits to their pretest condition.
•
Check that all status LEDs are off and the green POWER LED is on.
•
Notify fire, central station and/or building personnel when you finish testing the system.
5.4 Battery Checks and Maintenance
Maintenance-free sealed lead-acid batteries used in the system do not require the addition of water
or electrolyte. These batteries are charged and maintained in a fully charged state by the main
power supply’s charger during normal system operation. A discharged battery typically reaches the
voltage of 27.6 VDC within 48 hours; the charge rate depends on the battery size (2.0A for 18-
26AH; 5.0A-5.7A for 26AH-200AH).
Batteries should be replaced in accordance with the battery manufacturer’s recommendations.
Immediately replace a leaking or damaged battery.
•
If a battery leaks and contact is made with the Sulfuric Acid, immediately flush skin and/or
eyes with water for at least 15 minutes. Water and household baking soda provides a good
neutralizing solution for Sulfuric Acid.
•
If Sulfuric Acid gets into eyes, seek immediate medical attention.
•
Ensure proper handling of the battery to prevent short circuits.
•
Take care to avoid accidental shorting of the leads from uninsulated work benches, tools,
bracelets, rings, and coins.
NOTE:
The battery test requires fully charged batteries. If batteries are new or discharged due
to a recent power outage, allow the batteries to charge for 48 hours before testing.
!
WARNING:
Batteries contain Sulfuric Acid which can cause severe burns to the skin and eyes and damage to
fabrics.
!
WARNING:
Shorting the battery leads can damage the battery, equipment, and could cause injury to personnel.
