44
Battery Backup
Figure 39 - Battery Backup
The fire protection system contains a battery backup. During a
power loss, the “Fire System Activated” light will flash 11 times
between pauses indicating the power loss.
The batteries must be replaced every 2 years, from the date of fire
system commissioning. Part number PS-1270-F2, two are
required. Although the batteries are hot-swappable, which means
they can be replaced while there is input power to the control,
for
your safety, all sources of power must be removed from the
control before replacing the batteries
. To replace the batteries,
unplug the battery cable from the J1 connector on the electrical
board (PCBCORE). Then remove the retaining strap holding the
batteries in place. Remove the batteries from the cabinet.
Transfer the fuse and cable set from the old batteries to the new
batteries being extremely careful to observe the RED and BLACK
lead and terminal colors. Reinstall the batteries in the cabinet and
reconnect the battery plug to J1. The batteries are lead-acid type
and are recyclable;
please dispose of the old batteries
properly
.
During extended periods of inactivity where the fire protection
system will be without AC power for more than 2 days, such as a
shutdown or natural disaster, it is best to decommission the fire
system by disconnecting the batteries. This will prevent any
damage to the batteries through complete discharge. When the
system becomes active again, commission the system by
reconnecting the batteries and allow the batteries to charge for
48 hours.
Power Supply Adjustment
Figure 40 - Power Supply
To properly charge the batteries, the power supply must be
adjusted to output 27.5V DC. This can be checked with an
accurate digital voltmeter placed across Terminals H1D and
N1D. To adjust the output voltage, place a small flat-bladed
screwdriver into the yellow dial. Turn the dial clockwise, this will
increase the voltage.
Important!!
The battery backup system requires that the batteries be changed every 2 years, from the date of
fire system commissioning, maximum. Failure to do this will result in a void in product reliability
and may cause severe damage to facility due to loss of fire protection.
+
DC
+
24-28V
-
-
60W
DC
OK
24-
28V
Summary of Contents for EWC
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