System-sensor BEAM200 and BEAM200S Manuel d'utilisateur télécharger pdf (Page 6)

STEP 1. COARSE ALIGNMENT

Refer to Figures 11 and 12 for this step.

1. Ensure that both of the optics lock-down screws are loosened so that the

optics will move freely.

2. Looking through the alignment mirror at both the alignment sight and

reflector simultaneously locate the position of the reflector in the optical

sight. This step will require some practice. It is necessary to train your

eyes to shift focus between the reflector and the mirror in order to locate

the reflector. If the distance between the reflector and the detector is

large it is helpful to place a brightly colored object on the wall near the

reflector to aide in seeing the reflector in the alignment mirror.

3. Once the reflector has been located, begin to adjust both the horizontal

and vertical alignment knobs so that the reflector becomes centered in

the alignment mirror. Take care in this step. If the optics are incorrectly

aligned in this step, it will not be possible to proceed with the fine adjust-

ment step.

STEP 2. FINE ADJUSTMENT

Refer to Figures 10 through 12 for this step.

In this step you will be fine-tuning the optics to the reflector. To provide feed-

back of the signal level coming from the reflector the dual digital display read-

out will be used. Due to the large distance range that the detector can operate

over it is necessary that the detector operate with many different settings of

“electronic amplifier gain”. The detector is capable of determining the appro-

priate gain setting and then setting it itself via on-board processing algorithms.

There are no external gain settings on the detector that must be set by the

operator. Periodically throughout the fine adjustment step the detector will

need to re-adjust its “electronic amplifier gain” setting. When this occurs it

will be indicated by the dual digital readout as “- -”. When this occurs, cease

any further adjustment until the display again reads a number value.

1. Ensure that neither you nor any other objects are in the line of sight be-

tween the detector and the reflector.

2. Depress the Alignment switch once. Both the digital display and the yel-

low LED should turn on indicating that alignment mode has been en-

tered. The display should begin reading “- -” signifying an electronic gain

adjustment. After a few moments the display will indicate a numeric

value near 20. If the display reads “Lo” then the detector is not receiving

enough light from the reflector. Go back and repeat the course alignment

step and verify that the proper number of reflectors is used for the in-

stalled distance.

NOTE: The display will continue to read “Lo” until the detector receives

enough light from the reflector to continue with the fine adjustment step.

NOTE: In alignment mode (indicated by the yellow LED and the numeric

display) the sensitivity select and test switches are disabled.

3. With the display reading a numeric value, begin adjusting the horizontal

and vertical alignment knobs one at a time in the direction that increases

the numeric signal level on the display. Continue adjusting each axis

one at a time going back and forth between them until a peak value is

indicated. If a value of 90 is achieved, the detector will re-adjust the elec-

tronic gain once again. This will be indicated by a “- -” reading on the

display. When this happens halt any further adjustment until the display

again reads a numeric value. This process may occur more than once

during the fine adjustment step.

NOTE: Each time the display reads a value of 90 or greater the detector

will reduce the electronic gain. Each time the display reads a value of 10

or less the detector will increase the electronic gain.

4. Once satisfied that it is not possible to achieve a higher reading on the

display depress the alignment switch to complete the fine adjustment

step. The digital display readout will turn “OFF” and the yellow LED will

remain “ON”.

NOTE: It may not be possible to achieve a value near 90 on the display

during the last adjustment iteration. The final value of the display will

not likely be near 90. This is normal. It is due to the detector reducing

its electronic gain each time a value of 90 is achieved. When this occurs

the detector resumes with less electronic gain than previously when 90

was achieved. Less gain makes it more difficult to achieve higher values.

Final values anywhere between 20 and 90 are acceptable if no further

increase can be achieved.

NOTE: The alignment procedure is not complete yet.

At this time it is possible to set the sensitivity of the detector using the sen-

sitivity switch and digital display. See the Sensitivity Selection section of this

manual for further details.

STEP 3. FINAL GAIN ADJUSTMENT

Refer to Figure 13 for this step.

In this step, the detector will electronically adjust its internal gain one final

time. It is necessary to complete this step with the outer housing installed

since the housing will change the amount of light received from the reflector.

1. Tighten the optics lock down screws so the optics are secure.

2. Install the outer housing of the detector. The housing is installed by tight-

ening four screws, one in each corner of the housing. The screws are cap-

tivated in the plastic of the housing and cannot fall out during assembly.

NOTE: The housing contains a gasket seal that protects the detector

circuitry from corrosion and moisture sources. To Ensure that the gas-

ket seal performs correctly it is necessary to fully tighten all four of the

screws that hold the outer housing in place.

3. Remove the protective film from the front surface of the outer housing.

4. To initiate the final electronic gain adjustment, the reset switch must

be depressed. Once depressed the yellow LED will begin to blink. This

indicates that the detector is adjusting the electronic gain setting. Once

complete, the yellow LED will stop blinking and the green LED will begin

blinking. This indicates that the gain adjustment was successful.

NOTE: Use caution not to block the line of sight between the detector

and reflector in this step.

5. Install the outer aesthetic ring by snapping it onto the outer housing.

NOTE: If the outer aesthetic ring has been painted Ensure that the paint

is completely dry before proceeding with this step.

STEP 4. FINAL VERIFICATION

This step is required to Ensure the detector has been setup correctly and will

detect smoke at the proper sensitivity level.

1. With the detector functioning (indicated by the green LED blinking),

completely block the reflector with an opaque material. (Due to the high

optical efficiency of the reflector the selection of the opaque material

used to block the reflector is not critical. Acceptable materials include,

but aren’t limited to, this manual or the cardboard packaging inserts.)

See Figure 14. The detector should enter the fault condition (indicated by

the fault relay and the yellow LED (see Appendix I). If the detector does

not enter the trouble condition there is a problem with the installation

refer to the troubleshooting section in Appendix I for further assistance.

2. Complete a sensitivity test of the detector. Refer to the Sensitivity Testing

section of this manual for the appropriate procedure.

3. If the orange sticky paper was used to aid in the location of the reflector in

the alignment mirror it should be removed now. It is no longer necessary.

Congratulations. You have completed the final installation and alignment

procedure.

D400-74-00 6 I56-2289-005R

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System-sensor BEAM200 and BEAM200S Manuel d'utilisateur Page 6

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