User guide

EDS - RK90R - OPTICAL BEAM SMOKE DETECTOR - USER GUIDE
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10 - DETECTOR’S ACTIVATION
10.1 - on the RX, put the jumper of Initial Setup, JP1, in OFF ALI (mark on circuit) position (alignment
off)
10.2 - the blue alignment led flashes in a certain way (2 slow flashes - a delay - 2 fast flashes and then
this sequence is repeated)
10.3 - install the cover of the RX. This closing operation must be done within 5 minutes.
The level of the signal will be decreased because of the attenuation caused by the cover
10.4 - the inside electronics wait 5 minutes for the installation of the cover and then perform a quick
procedure (1-2 minutes) to get the RK100B output signal level back to 4,7-5V
10.5 - after this activation procedure, the detector becomes operational. The blue alignment led switchs
off (detail chap.10.2) and it begins to flash as described in 10.6
10.6 - every 10 seconds the blue led will give out a short flash that indicates the normal operation of
the detector. In case of alarm the frontal red led will light up and remain switched on until the alarm
state is present or, if the memory function is activated, until the power supply is removed for at least
5 seconds (v. chap.14)
11 - AUTOCOMPENSATION
11.1 - the inside electronics of the detector is equipped with a special function of autocompensation of
the signal. If the detector is installed inside a particularly dusty place, the dust that is deposited on the
front of the TX and RX causes a drop of the output signal level.
This decrease is automatically eliminated by the autocompensation.