Maintenance - Honeywell Notifier NFXI-BEAM-T Installations- Und Wartungsanleitung

CHART 1: SENSITIVITY (%/m vs DISTANCE)
(Assuming uniform smoke distribution)
7
6
Level 2
5
Level 3
4
Level 4
3
2
Level 1
1
0
0 10 20 30 40
In addition to the four standard sensitivity selections the detector has two
Acclimate settings. When either of these settings is chosen the detector
will automatically adjust its sensitivity using advanced software
algorithms to select the optimum sensitivity for the environment. The
sensitivity will be continuously adjusted within the ranges specified in the
Chart 1.
Percentage obscuration can be converted to percent per metre
assuming uniform smoke density for the entire length of the beam. Chart
1 converts obscuration to percent per metre for all acceptable sensitivity
settings.
SENSITIVITY TESTING
NOTES:
1. Before testing, notify the proper authorities that the smoke detector
system is undergoing maintenance, and therefore the system will be
temporarily out of service. Disable the zone or system undergoing
maintenance to prevent unwanted alarms.
Detectors must be tested after installation and following periodic
maintenance. The sensitivity of the NFXI-BEAM may be tested as follows:
Calibrated Test Filter Method
The sensitivity of the detector can be tested using an opaque material
(such as this manual ) to cover the reflector by an amount indicated by
the graduated scale on the reflector, see Figure 10.
1. Verify the sensitivity setting of the detector in % obscuration. See the
Sensitivity Selection section
determination if sensitivity is unknown.
2. Place the blocking material over the reflector, lining it up with the
graduated marks that are 10 less than the detector setting in %
obscuration. The detector should not alarm or fault.
material in place for a minimum of 1 minute.
3. Place the blocking material over the reflector lining it up with the
graduated marks that are 10 more than the detector setting in %
obscuration. The detector should enter alarm within 1 minute.
4. The detector can be reset with the reset switch on the detector unit or
remote reset.
Figure 10. Reflector Test Card Procedure
NB200-00-02
50 60 70 80
Distance (Metres)
of this manual for sensitivity
Keep the
LINE UP EDGE OF BLOCKING MATERIAL
WITH APPROPRIATE OBSCURATION
LEVEL
MOVE BLOCKING MATERIAL
DESIRED AMOUNT OF OBSCURATION
Test Failure Checks
If the detector fails either the sensitivity or functional test, several steps
should be taken to determine if the detector is faulty or simply needs to
be re-adjusted, before returning the unit. These steps include:
1. Verify all wiring connections and appropriate power is applied to the
detector.
2. Verify that the optical line of sight is free from obstructions or any
other light sources including reflective objects such as gloss painted
surfaces.
It is imperative that at least 90% of the received light is from the
reflector alone, otherwise sensitivity cannot be assured.
3. Apply the maintenance procedure in this manual. Repeat the test
procedure. If the detector still fails the test procedure proceed with
90 100
step 4.
4. Repeat the alignment procedure in this manual. If the alignment
procedure is successful repeat the test procedure. If the detector
still fails the test it should be returned for repair.
NFXI-BEAM BEAM DETECTOR: SET-UP PROCEDURE SUMMARY
Beam Alignment – ensure power is on
Course Alignment
Carry out using target eyepiece
Adjust using horizontal and vertical thumb screws
Fine Adjustment
Initiate using Alignment Switch
Continue adjustment using horizontal and vertical thumb screws
When the adjustment is complete press the Alignment Switch
Sensitivity Setting
Select using Sensitivity Switch
Final Gain Adjustment – ensure front cover is fitted
Initiate using the Reset Switch
Completed when the green LED blinks
Final Verification
Use obscuration filters or reflector test card to initiate Fire and Fault signals

MAINTENANCE

Note: Before cleaning the detector, notify the proper authorities that the
smoke detector system is undergoing maintenance, and therefore the
system will be temporarily out of service. Disable the zone or system
undergoing maintenance to prevent unwanted alarms.
1. Carefully clean the outer housing lens face. A damp soft cloth with a
mild soap may be used. Avoid products with solvents or ammonia.
2. Carefully clean the reflector. A damp soft cloth with a mild soap may
be used. Avoid products with solvents or ammonia.
Functional Testing
For periodic maintenance functional testing, the detector can either be
tested using the Calibrated Test Filter method, by using the local test
switch on the transmitter/receiver unit or remotely using the Remote Test
Station.
The Remote Test Station, RTS151KEY, can be used with the NFXI-BEAM
beam smoke detector. The wiring diagram to connect the NFXI-BEAM to
the key is displayed on page 2 of this manual.
The NFXI-BEAM-T is equipped with an integral sensitivity test feature
that consists of a calibrated test filter attached to a servomotor inside the
detector optics. When a test is initiated using the remote test station or
local test switch the test filter is moved in the pathway of the light beam.
If the correct level of signal reduction is received the detector will enter
alarm. If the proper level of signal reduction was not achieved, indicating
that the sensitivity of the detector is out of tolerance, the detector will
enter the fault condition.
Note: This test should satisfy most local periodic maintenance and
testing requirements.
If the detector fails this test refer to the Test Failure Checks described
above
PAINTING
The outer aesthetic ring may be painted using enamel or acrylic paints
either by brush or spray.
Note: Never paint the flat lens surface of the outer housing.
TO
5 I56-3878-000