Conventional Products—6424 Projected Beam Type Smoke Detector 21
4.
Slide the alignment switch in the receiver to A. The yellow trouble
LED should light to indicate alignment mode but the trouble relay
should not activate.
If the receiver is left in the alignment mode for more than an hour, the
trouble relay will activate.
5.
Point the receiver in the direction of the transmitter.
6.
If more than three of the red alignment LEDs light, slowly turn the
alignment adjust pot clockwise until three alignment LEDs are lit.
If three or less are lit, go to the transmitter.
7.
Align the transmitter by trying to get all four LEDs to light up by
slowly moving it back and forth, up and down, until the maximum
number of alignment LEDs are lit.
8.
At the receiver, slowly turn the alignment adjustment pot clockwise
until only three alignment LEDs are lit.
9.
Align the receiver by slowly moving it, trying to get the fourth
LED on.
If the LED comes on, slowly turn the alignment adjustment pot
clockwise until only three alignment LEDs are on.
10. Once the receiver is aligned as well as possible:
Tighten the horizontal and then the two vertical adjustment screws on
the receiver brackets.
Make sure that all three alignment LEDs stay on.
11. For final alignment, repeat Steps 9 and 10 until there is no more
increase in the number of LEDs which will light.
It may not always be possible to get the fourth LED to turn on if the
beam is already perfectly aligned, but it is important to try to
guarantee the best possible alignment.
12. Once the transmitter is aligned as well as possible:
Tighten the horizontal and then the two vertical adjustment screws on
the transmitter brackets.
Make sure that all three alignment LEDs stay on while
tightening these.
13. Slide the alignment switch in the transmitter to the normal mode (N)
position.
14. If the transmitter is separately powered, disconnect the temporary
wiring.
