- Remove the cover of the detector. Use a thin, flathead screwdriver to pry the chassis
from the cover. Insert the screwdriver into the cover slots and pry up (see Figure B).
Cover slots
(3)
Detector
chassis
Cover
1
Figure B - Removing the detector's cover
- Using a thin flathead screwdriver, gently pry the cover tab away from the chamber
(see Figure C) and pull the chamber up and away from the chamber (see Figure C).
2
3
Figure C - Removing the detector chamber cover
Chamber
Chassis
Chamber
Chassis
- Remove any dust or debris from the chassis area using clean, dry compressed air or
a vacuum.
- Replace the chamber. Make sure the hole for the LED (and thermistor) is properly
aligned over the LED (and thermistor). For easiest results, place the chamber parallel
to the chassis, then gently snap the locking tabs into place.
- Replace the detector’s cover. Be careful to line up the holes for the LED (and ther-
mistor).
- Return the detector to its base.
Important: The detectors should be tested for proper calibration after cleaning. Use
one of the tests described in Section 6.1, 6.2, or 6.3.
Do not paint the detectors. Paint or other foreign matter covering the screens may pro-
hibit or retard smoke from entering the detector.
6.0 Periodic Testing
Note: The calibration of the detector is very important in determining its continued
operation. Depending on local regulations, the frequency of calibration testing
may be required more often than once a year. The National Fire Protection
Association (NFPA) Standard 72, “The National Fire Alarm Code” recommends
calibration tests be made at installation, after one year, then every other year,
and Functional testing should be done monthly.
Note: It is important to notify all concerned parties prior to any maintenance or testing
of the fire alarm system, and then again after completion of these activities.
The calibration can be checked (to meet NFPA 72 “The National Fire Alarm Code” re-
quirements) using any of the following methods. These tests will confirm whether or not
the detector is within its factory marked calibration range.
6.1 Visual Check
This detector includes the Chamber Check™ Automatic Trouble Indication which allows
the detector to automatically indicate if its calibration is out of the factory listed range.
This allows you to meet the NFPA guidelines for sensitivity testing by visually inspecting
the detector and checking the flash rate of the LED.
If the calibration is out of range for more than 24 hours, the alarm LED on the detector
will begin to flash once per second. The LED will flash once every 3 seconds when the
detector is operating normally.
Perform the visual check on all detectors before resetting power. Disconnecting the
detector power will erase this indication. If the detector has been reset within the last 24
hours, or you are unsure of the last reset time, you should use the magnet test or voltage
output to confirm the sensitivity.
6.2 Magnet Test
Place a magnet horizontally against the detector, centered over the “T” marked on the
head. Observe the LED.
- If the detector is within the factory marked calibration range, it will go into alarm and
the alarm LED will latch ON.
- If the detector is too sensitive, the LED will flash 6 times rapidly (once every 1/2 sec-
ond) and then the detector will go into alarm.
- If the detector is not sensitive enough, the LED will flash 4 times slowly (once every
two seconds) and then the detector will go into alarm.
- If the detector is not operational, it will not signal an alarm.
6.3 Voltage Measurement Test
Plug a D1005 Test Cable (optional) into the calibration voltage pins (see Figure D).
Calibration
voltage pins
Figure D - Calibration voltage pins
Connect a digital voltmeter to the D1005 Test Cable. Connect the negative terminal of
the meter to the black wire of the D1005 and connect the positive terminal of the meter to
the test cable’s red wire. The white wire of the D1005 is not used.
- The voltage measured by the voltmeter equals 1/2 the sensitivity (in %/ft. obscuration)
of the detector.
- Multiply the voltage by 2. The result should be within the factory marked calibration
range printed on the label attached to the bottom of the detector.
If the detector is outside of the factory marked calibration range, it should be removed
and cleaned as described in Section 5.0.
- Recheck the calibration voltage measurement.
- If the detector is still outside of the factory marked calibration range after cleaning,
send the unit back to Radionics, Inc. for re-calibration.
6.4 Thermistor Test
Expose the thermistor to a heat source such as a hair dryer or a shielded heat lamp.
Expose the thermistor until the detector goes into alarm and the alarm LED latches on.
Note: Be sure to clear each alarm for each test before proceeding to the next detec-
tor.
7.0 FCC Compliance Notice
This equipment has been tested and found to comply with the limits for a class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in strict accordance with the
manufacturer’s instructions and recommendations, may cause harmful interference to radio com-
munications. However, there is no guarantee that interference will not occur in a particular installa-
tion. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment on and off, the user is encouraged to try to correct the
interference by one or more of the following measures:
1) Reorient or relocate the receiving antenna.
2) Increase the separation between the equipment and the Receiver.
3) Connect the equipment into an outlet on a circuit different from the Receiver.
4) Consult the installing company or an experienced radio/TV technician for help.
The booklet, “How to Identify and Resolve Radio-TV Interference Problems,” prepared by the FCC
may prove helpful. It is available from the U. S. Government Printing Office, Washington, DC
20402. Specify Stock No. 004-000-00345-4.
© 1996 Radionics, Inc., Salinas, CA, U.S.A. All rights reserved.
™ The Radionics logo is a registered trademark of Radionics, Inc., Salinas, CA, U.S.A.
Radionics, Inc., 1800 Abbott Street
Salinas, CA, 93901, U.S.A.
Customer Service: (800) 538-5807
™
