D100-59-00 2 I56-720-10
2. The detector should light both LEDs within 5 seconds,
indicating an alarm, and annunciate the panel.
B. Calibrated Sensitivity Test
The MOD400R Test Module is used with a digital or analog
voltmeter to test calibrated detector sensitivity as described
in the test module manual.
C. Smoke Entry Test
Aerosol generators for smoke entry testing are available
from a number of third party manufacturers (e.g.,
Gemini Scientific). Following the manufacturer’s instruc-
tions, apply aerosol until the panel alarms.
Maintenance
Before cleaning, notify the proper authorities that the sys-
tem is undergoing maintenance and will be temporarily out
of service. Disable the system to prevent unwanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover. Use a small standard screw-
driver to release each of the four cover removal tabs that
hold the cover in place.
Figure 1. Test magnet positioning:
Figure 2:
This smoke detector is designed to activate and initiate emergency ac-
tion, but will do so only when it is used in conjunction with an authorized
fire alarm system. This detector must be installed in accordance with
NFPA standard 72.
Smoke detectors will not work without power. AC or DC powered
smoke detectors will not work if the power supply is cut off.
Smoke detectors will not sense fires which start where smoke does not
reach the detectors. Smoldering fires typically do not generate a lot of
heat which is needed to drive the smoke up to the ceiling where the
smoke detector is usually located. For this reason, there may be large de-
lays in detecting a smoldering fire with either an ionization type detector
or a photoelectric type detector. Either one of them may alarm only after
flaming has initiated which will generate the heat needed to drive the
smoke to the ceiling.
Smoke from fires in chimneys, in walls, on roofs or on the other side of a
closed door(s) may not reach the smoke detector and alarm it. A detector
cannot detect a fire developing on another level of a building quickly or at
all. For these reasons, detectors shall be located on every level and in
every bedroom within a building.
Smoke detectors have sensing limitations, too. Ionization detectors and
photoelectric detectors are required to pass fire tests of the flaming and
smoldering type. This is to ensure that both can detect a wide range of
types of fires. Ionization detectors offer a broad range of fire sensing capa-
bility but they are somewhat better at detecting fast flaming fires than
slow smoldering fires. Photoelectric detectors sense smoldering fires better
than flaming fires which have little, if any, visible smoke. Because fires de-
velop in different ways and are often unpredictable in their growth, nei-
ther type of detector is always best, and a given detector may not always
provide early warning of a specific type of fire.
In general, detectors cannot be expected to provide warnings for fires re-
sulting from inadequate fire protection practices, violent explosions, es-
caping gases which ignite, improper storage of flammable liquids like
cleaning solvents which ignite, other similar safety hazards, arson, smok-
ing in bed, children playing with matches or lighters, etc. Smoke detectors
used in high air velocity conditions may have a delay in alarm due to dilu-
tion of smoke densities created by frequent and rapid air exchanges. Addi-
tionally, high air velocity environments may create increased dust
contamination, demanding more frequent maintenance.
Smoke detectors cannot last forever. Smoke detectors contain electronic
parts. Even though smoke detectors are made to last over 10 years, any
part can fail at any time. Therefore, smoke detectors shall be replaced after
being in service for 10 years. The smoke detector system that this detector
is used in must be tested regularly per NFPA 72. This smoke detector
should be cleaned regularly per NFPA 72 or at least once a year.
WARNING
The Limitations of Property Protection Smoke Detectors
3. Vacuum the outside of the screen carefully without re-
moving it.
4. Remove the sensor screen. Pull the screen straight away
from the sensing chamber until it snaps out of place. Re-
placement screens are available.
5. Use a vacuum or clean, compressed air to remove dust
and debris from the sensing chamber.
6. Reinstall or replace the sensing chamber screen by con-
tact.
7. Reinstall the sensor cover. Use the test module socket
and LEDs to align the cover with the sensor. Snap the
cover into place.
8. When all sensors have been cleaned, restore power to
the system and test the sensor(s) as described in the
TESTING section of this manual.
