MB200-00-02
5
I56-3879-000
DEUTSCH
ESP
AÑOL
ENGLISH
IT
ALIANO
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
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.
MI-LPB2-S2I 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 be tested
using the Calibrated Test Filter method.
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.
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 MI-LPB2-S2I 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 of this manual for sensitivity
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. Keep the
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.
CHART 1: SENSITIVITY (%/m vs DISTANCE)
(Assuming uniform smoke distribution)
0
1
2
3
4
5
6
7
0
10
20
30
40
50
60
70
80
90
100
Distance (Metres)
O
b
scu
ra
ti
o
n
(
%
/M
et
re
)
Level 1
Level 2
Level 3
Level 4
Figure 10. Reflector Test Card Procedure
MOVE BLOCKING MATERIAL TO
DESIRED AMOUNT OF OBSCURATION
LINE UP EDGE OF BLOCKING MATERIAL
WITH APPROPRIATE OBSCURATION
LEVEL
