System Sensor 2300TB User Manual

Page 4

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MAINTENANCE:
When removing the detector from a system of more than 1 detector per
loop, an optional detector bypass plug can be inserted into the screw ter-
minal block in order to maintain the system’s continuity. Order accessory
model number J2300TB.
NOTE: Before removing the detector, notify the proper authorities that the

smoke detector system is undergoing maintenance and will tem-
porarily be out of service. Disable the zone or system undergoing
maintenance to prevent unwanted alarms.

NOTE: Before removing the detector cover, note the position of the therm-

istors. Make sure the thermistors are seated and not bent over
when the cover is replaced.

1. Remove the detector cover by placing a small-bladed screwdriver in the

cover removal slot and twisting it slightly until the cover can be turned
counterclockwise for removal.

2. Remove the screen by pulling it straight out. (See Figure 5).
BE CAREFUL NOT TO DAMAGE THE THERMISTORS. (See note

above). Vacuum the screen thoroughly.

3. Clean the black vaned chamber piece by vacuuming or blowing out dust

and particles.

4. To re-install the screen, rotate the screen on the housing until it drops

into the alignment slots. Carefully push the screen onto the base, mak-
ing sure it fits tightly to the chamber. Replacement screens are available
(order part number RS23).

5. Replace the cover by gently rotating it clockwise until it locks in place.

CHECK TO MAKE SURE THE THERMISTORS ARE IN AN UPRIGHT
POSITION.

6. Reinstall the detector into the system, enable system operation, and

notify the proper authorities that the system is back on line.

��

Figure 5. Removal of cover and screen for

cleaning.

S0185-00

WARNING

Limitations of Smoke Detectors:

This smoke detector is designed to

activate and initiate emergency action, 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 delays 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 smolder-
ing 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 capability 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 develop in different ways and are often unpredictable in their growth, neither 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 resulting from inadequate fire protection practices, violent explosions, escaping gases
which ignite, improper storage of flammable liquids like cleaning solvents which ignite, other similar safety hazards, arson, smoking 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 dilution of smoke densities created by
frequent and rapid air exchanges. Additionally, high air velocity environments may create increased dust contamination, demanding more frequent mainte-
nance.

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.

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