B. Calibrated Sensitivity Test (MOD400R)
Use the MOD400R Test Module with a digital or analog voltmeter to test calibrated detector sensitivity as described in the test module manual.
C. Aerosol Generator (Gemini 501)
Set the generator to represent 4%/ft. to 5%/ft. obscuration as described in the Gemini 501 manual. Use the bowl shaped applicator to apply aerosol to
the sensor. It should alarm within 30 seconds.
Notify the proper authorities that the system is back on line.
Detectors that fail these tests should be cleaned as described under
MAINTENANCE
and retested. If the detectors still fail these tests they should be
returned for repair.
Figure 1. Bottom and side views
showing position of test magnet.
Figure 2.
MAINTENANCE
Before cleaning, notify the proper authorities that the system is undergoing maintenance and will be tem-
porarily 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 screwdriver to release each of four cover removal tabs
that hold the cover in place.
3. Vacuum the outside of the screen carefully without removing it.
4. Remove the sensor screen. Pull the screen straight away from the sensing chamber until it slides out of
place. Replacement screens are available.
5. Use a vacuum cleaner or clean, compressed air to remove dust and debris from the sensing chamber.
6. Reinstall or replace the sensing chamber screen by sliding the edge without the tabs over the sensing
chamber. Make sure that one of the Screen Contacts touches the PC Board Contact.
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.
TESTING
Detectors must be tested after installation and following periodic maintenance. However,
before testing, notify the proper authorities that the smoke detector system is undergoing
maintenance and the system will be temporarily out of service. Disable the zone or sys-
tem undergoing maintenance to prevent unwanted alarms.
In addition, check to ensure that the LEDs blink. If they do not, power has been lost to the
detector (check the wiring), or it is defective (return for repair).
Test the sensors as follows:
A. Test Magnet (Model M02-24 – optional)
1. Test the sensor by positioning the optional test magnet against the sensor plastic just
to the left of LED1 (Figure 1).
2. Both LEDs should latch on within 30 seconds, indicating an alarm and annunciating the
panel.
A78-2463-16
N500-21-00
2
I56-652-06R
SENSOR
COVER
SENSING
CHAMBER
SENSOR
SCREEN
SENSOR
CONTACTS
COVER REMOVAL
TABS
Please refer to insert for the Limitations of Fire Alarm Systems
LED
LED
TEST MODULE
SOCKET
TEST
MAGNET
PAINTED
SURFACE
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