4
ESL 572NS Smoke Detector
When to Replace the Batteries
The smoke detector requires two 3V lithium 123 batteries as listed
on the battery compartment cover. The required batteries are
available where other batteries are sold.
Battery life is a minimum of 1 year and varies depending on how
often the alarm is tested. When the batteries are low, the detector
sends a low battery signal to the control panel, extinguishes its
LED, and chirps every 45 seconds until the batteries are replaced.
The low battery trouble chirps can be silenced for 24 hours by
pushing the Test button.
Replacing the Batteries
Use only 3V lithium 123 batteries as listed on the battery com-
partment cover.
1. Remove the detector from the mounting base. See Attaching
and Removing the Detector.
2. Slide the battery compartment cover away from the detector to
unsnap it and lift it off. See Figure 3.
3. Remove the batteries and dispose of them properly.
4. Observing correct polarity, insert two new 3V lithium batteries
into the battery compartment and replace the cover. Use only
new batteries when replacing the old batteries.
5. Reattach the detector to the mounting base. See Attaching and
Removing the Detector.
6. Test the system.
Cleaning the Detector
Clean the detector cover with a dry or damp (water) cloth as
needed to keep it free from dust and dirt.
When necessary, clean the detector interior and replace the
smoke chamber as follows:
1. Disconnect the alarm notification appliances, service release
devices, and extinguishing systems.
2. Remove the detector from its mounting base. See Attaching
and Removing the Detector.
3 Remove the batteries. See Replacing the Batteries.
4. Slide a flat-blade screwdriver in the slot on the detector cap
and gently push the handle down to pry the cap up and off.
See Figure 5.
5. Squeeze the smoke chamber where indicated by the alignment
arrows and pull it up and away from the detector and discard.
See Figure 6.
6. Blow out or use a soft-bristled brush to remove dust and dirt
from the smoke chamber base.
7. Line the new smoke chamber up with the optical base by
lining up the arrows on the smoke chamber to the latches on
the optical base and snap down into place.
8. Replace the detector cap as follows:
-Line the cap up with the smoke detector.
Attaching and Removing the Detector
To remove the detector from the mounting base, grasp the
detector and turn it counterclockwise approximately 15
degrees. The detector should snap off of the mounting base.
Attach the smoke detector to its mounting base as follows:
- Line up the raised alignment tab on the lip of the smoke
detector with arrow on the mounting base. See Figure 3.
- Insert the smoke detector into the base and turn
clockwise approximately 15 degrees. It should snap
firmly into place.
Understanding the Test Button
The Test button on the detector performs three functions as
follows:
Testing = Press the Test button for 4 seconds. The detector
performs a sensitivity test and then sends a test signal to the
control panel.
Silence alarm = Press to silence the sounder during an alarm.
After a few minutes, the sounder and alarm resume if smoke is
still present.
Silence trouble chirp = Press to silence a trouble chirp. The
trouble chirp resumes after 24 hours if the trouble condition is
not corrected.
Understanding the LED
The LED on the detector indicates the status of the detector
as follows:
FLASHING = Flashes every 8 seconds to indicate normal
operation.
ON = Detects smoke, sending an alarm.
OFF = Trouble or maintenance is required. Check the control
panel to determine what action to take.
Figure 4 - Removing the detector from the base
Figure 5 - Removing Detector Cap
