Hochiki FB-1 - Manual (Page 10)

Page 10 of 19 ESP FIREbeam – Installation Manual
 2011 Hochiki Europe (UK) Ltd
2-3-0-1340/ISS2/DEC11
NOW place or uncover the reflector on the blank wall directly opposite the beam head ensuring there is a clear path
through any obstructions such as structural steels etc.
NOTE: It is important that there is a clear line of sight between the reflector and beam head. The beam must see
at least 200mm of clear space around the reflector to enable the beam to see the edges of the reflector to
allow successful auto alignment in the following stage.
Once the reflector is in place and visible there should be a big jump in the received signal (AQ). This means that
the head is seeing and receiving a signal back from the reflector. In most cases this will result in a received signal
of over 100%.
As long as there is a received signal of over 40% you can move onto the next stage, see “Stage Four - Auto-
Alignment” on page 11.
If the AQ reading is below 40% it means the head is not seeing the reflector and will abort Auto Alignment. The
next stage is to manually move the beam to achieve an AQ reading of over 40%, ideally over 100%. The higher
the AQ the quicker it will auto align. This is done by manually moving the x and y motors to obtain a received
signal from the reflector.
In the example below we can see that the reflector is below the eye line of the beam head, so in this case you
would need to lower the angle of the beam (-Y) until you receive an AQ of over 40%.
The beam can be moved on both X and Y axis to a maximum 5 degrees using the
left
(x-),
right
(x+),
up
(y+) and
down
(y-) keys. Looking at the reflector this
will move the beam across the reflector as shown:
Holding the keys down will quickly scroll through to your desired position, on release of the button the screen will
revert to the actual beam position and can be seen stepping toward the requested position.
To confirm the beam is seeing the reflector, cover the reflector as this should drop the AQ and therefore prove the
beam is on the reflector.
In the example above moving the y axis down (y-)
results in a greater AQ Try and achieve as high an AQ as possible, it must be
over 40% to auto align. The higher the AQ the quicker
the auto align, above 100% is good
You will now see the manual alignment screen showing anything between 0 and 6%. This is the amount of received
signal with no reflector that the beam is picking up from the environment.