Fire Fighting Enterprises FIRERAY 100R - Manual (Page 7)

6. Operating Mode
Select Operating Mode by moving the Mode Switch to its lower position.
On exiting alignment mode the Detector will perform an internal calibration check. Do not
block the beam whilst this internal calibration takes place. The Amber LED will flash
once a second, for up to sixty seconds, and then go out. If this fails, which would be due to
bad alignment or either electrical/optical noise, the detector will indicate a Fault condition. In
this case the alignment procedure must be repeated.
If the internal calibration check completes satisfactory, the Detector will now be in normal
operating mode.
7. System Testing
After successful installation and alignment the System will require testing for both alarm and
fault conditions.
Fault (Trouble) Test
Using a non-reflective object, quickly cover the entire prism(s). The Detector will indicate a
fault within 10 seconds by activating the FAULT LED and operating the Fault Relay.
The fault condition will automatically reset when the obstruction is removed.
Alarm (Smoke) Test
Taking note of the threshold selected during installation, select obscuration mark on filter to
correspond with the Detector Alarm threshold (see fig. 3).
Place the filter over the receiver optics (Top of Detector Head
 opposite end to the status
indication LED’s) at the correct obscuration value determined by the threshold selected. For
example, if a threshold of 35% has been selected position the filter just past the 35%
obscuration value on the filter (see fig 3.). Take care not to cover the transmitter optics.
Fig. 3.
 Obscuration value
Align filter for correct obscuration/threshold setting
Transmitter Optics
Receiver Optics
Alignment/Status
Indication LED’s
RED AMBER