Advertisement
4.0 Testing
4.1
Operational Testing
Before and after maintaining or testing the
fire alarm system, notify all concerned
parties.
1. Apply power to the system and check for alarms.
a. Note which detectors are in alarm (if any) and
remove power to the system.
b. Remove the alarmed detectors and recheck for
proper wiring.
c. If the problems persist, replace the affected
detectors or swap them with known good units.
This determines if the problem is caused by the
detector.
d. If there is a system alarm with no detector alarms
present, remove all detectors and check the wiring.
Pay close attention to the wiring of each EOL
resistor and EOL module.
2. When the system is free of alarms, check each detector
to ensure the red LED indicator is flashing
approximately every 3.5 sec. This verifies the detector
is receiving power and operating properly.
3. Test each detector to ensure it causes a control panel
alarm. Do one of the following to alarm the detectors:
•
Place a magnet horizontally against the detector's
side, centering it over the "T" marked on the head
activating an internal reed switch. On the D273IS
this activates the heat detector relay and latches, or
•
Use a UL Listed aerosol smoke detector tester
such as the Home Safeguard Industries' 25S to
simulate an alarm. Follow the tester instructions.
On the D273IS this energizes the smoke detector
relay and it remains in this state as long as smoke
is in the chamber (non-latching).
When a detector alarms, the red LED
indicator activates and latches ON.
Clear the alarm by momentarily removing
power before proceeding to the next
detector. Clear alarms from each test
before proceeding to the next detector.
4.2
Sounder Testing
The sounders on the D263THS, D273ES, D273THES,
D273THS, and D273THSR produce a steady tone
(latching) from any alarm condition. The D273IS produces
a steady tone from a heat alarm (latching) and a temporal
pattern from a smoke alarm (non-latching). If using a
D132B, the sounder produces a pattern the same as the
notification appliance circuit (NAC) control panel.
Bosch Security Systems, Inc. | 02/06 | 31341J
D263/D273 Series | Installation Instructions | 4.0
Available from A1 Security Cameras
www.a1securitycameras.com email: sales@a1securitycameras.com
4.3
Sensitivity Testing
You must calibrate the detector for continuous operation.
Depending on local regulations, calibration testing might be
required more than once a year. NFPA 72 recommends
calibration testing at installation, and then every other year.
Perform a Functional Test annually.
Test the detector's sensitivity to meet NFPA 72
requirements by conducting a Magnet Test, or measuring
the calibration voltage pins with a D1005 Test Cable. You
can also visually inspect the detector's LED to quickly
determine calibration as described in Section 4.3.1 Visual
Check.
The sensitivity tests confirm if the detector is within its
factory-marked calibration range.
4.3.1
Visual Check
The D263/D273 Series detectors include the Chamber
®
Check
Automatic Trouble Indication allowing the detector
to automatically indicate when its calibration is out of the
factory listed range. Use Chamber Check
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 h, the
detector's Alarm LED begins to flash approximately once
per second. The LED flashes approximately once every 3.5
sec when the detector is operating normally.
Perform the visual check on all detectors
before resetting power. Disconnecting the
detector power erases this indication.
If the detector was reset within the last 24
h or you are unsure of the last reset time,
perform a Magnet Test or check the voltage
output to confirm the sensitivity.
4.3.2
Magnet Test
Hold a magnet horizontally against the detector, centered
over the "T" for about 10 sec, and observe the LED (refer
to Figure 1 on page 3).
•
If the detector is within the factory marked calibration
range, it activates an alarm and the Alarm LED latches
ON.
•
If the detector is too sensitive, the LED rapidly flashes
six times (once every 1/2 sec). Then the detector
activates an alarm.
•
If the detector is not sensitive enough, the LED slowly
flashes four times, once every 2 sec, and the detector
activates an alarm.
•
If the detector is not operational, it does not activate an
alarm. Return the unit for repair.
4.3.3
Voltage Measurement Test
1. Plug a D1005 Test Cable into the calibration voltage
pins.
Testing
®
to meet NFPA
5
Advertisement
