Maintenance
It is recommended that the detector be removed from its mounting base to facilitate cleaning. The detector is cleaned as follows:
NOTE: Before removing the detector, notify the proper authorities that the smoke detector system is un- dergoing maintenance and will be temporarily out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.
1.Remove the detector cover by prying away the four side tabs with a
2.Vacuum the screen carefully without removing it. If further cleaning is required continue with Step 3, oth- erwise skip to Step 8.
3.Remove the screen assembly by pulling it straight out (see Figure 5).
4.Remove the sensing chamber cover by pulling it straight out.
5.Clean the vaned chamber piece by vacuuming or blow- ing out dust and particles.
6.Replace the sensing chamber cover, aligning the arrow on the top with arrow on the printed circuit board.
7.To replace the screen, place it over the chamber as- sembly, turning it until it snaps into place.
8.Replace the cover using the test module socket and LEDs to align the cover and then gently pushing it until it locks into place.
9.Reinstall the detector.
10.Test the detector as described in TESTING.
11.Reconnect disabled circuits.
12.Notify the proper authorities that the system is back on line.
Figure 5. Removal of cover and screen for cleaning:
REMOVABLE
HOUSING
REMOVABLE
SCREEN
SENSING
CHAMBER
COVER
SENSING
CHAMBER
BASE
WARNING
The Limitations of Property Protection Smoke Detectors
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 ca- pability but they are somewhat better at detecting fast flaming fires than slow smoldering fires. Photoelectric detectors sense smoldering fires bet- ter than flaming fires which have little, if any, visible smoke. Because fires develop 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 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, 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 dilution of smoke densities created by frequent and rapid air exchanges. Additionally, 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 detec- tor 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.
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector to be free from de- fects in materials and workmanship under normal use and service for a period of three years from date of manufacture. System Sensor makes no other express warranty for this smoke detector. No agent, representative, dealer, or employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty. The Company’s obliga- tion of this Warranty shall be limited to the repair or replacement of any part of the smoke detector which is found to be defective in materials or workmanship under normal use and service during the three year period commencing with the date of manufacture. After phoning System Sensor’s toll free number
Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174.
Please include a note describing the malfunction and suspected cause of failure. The Company shall not be obligated to repair or replace units which are found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case shall the Company be liable for any consequential or incidental dam- ages for breach of this or any other Warranty, expressed or implied what- soever, even if the loss or damage is caused by the Company’s negligence or fault. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
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| © System Sensor 1997 |
