Det-Tronics U7698A, B, C, E Unitized Frequency IR Detector/Controller - Manual (Page 11)

3. Hold a flickering IR source (such as the Det-Tronics
model W867 Test Lamp) close to the detector or
press the
oi test button for 5 to 10 seconds. The
alarm relay will energize and the LEDs will be illumi-
nated when the device goes into an alarm condition.
4. Remove the IR source (or release the oi test button).
If the unit is programmed for non-latching operation,
the alarm relay will become de-energized and the
LEDs will turn off when the IR source is removed. If
the unit is programmed for latching operation, it can
be reset by removing input power (2.0 seconds min-
imum).
5. Repeat this test for all detector/controllers in the sys-
tem. If a unit fails the test, refer to the
“Troubleshooting” section of this manual.
6. Double check all detectors in the system to be sure
that they are properly aimed at the potential hazard.
7. Turn on all extinguishing equipment that is connect-
ed to the system.
CHECKOUT PROCEDURE
A checkout of the system using the oi feature, a flame,
or other flickering IR source should be performed on a
regularly scheduled basis to ensure that the system is
operating properly. The period between checkouts will
depend on the level of potential hazard involved and the
environmental conditions encountered. In general, the
more frequent the checkouts, the greater the reliability of
the system.
FIRE ALARM PANEL
ALARM
INPUT
NOTE: END OF LINE RESISTOR VALUE MUST BE
A MINIMUM OF 5 WATTS WITH 2 WATT MAXIMUM DISSIPATION.
NO
COM
NC
**
+
–
+
–
A1294
oi
NO
COM
NC
SPARE
SPARE
F
I
R
E
F
A
U
L
T
U7698B
24 VDC
FAULT
FAULT RELAY SHOWN DE-ENERGIZED
*
*
EOL DEVICE **
NO
COM
NC
+
–
oi
NO
COM
NC
SPARE
SPARE
F
I
R
E
F
A
U
L
T
U7698B
*
oi TEST
NOTE: SERIES FIRE RESISTOR, IF USED, MUST BE
A MINIMUM OF 7 WATTS WITH A 0.7 WATT MAXIMUM DISSIPATION.
Figure 9—Typical Multiple Unit Configuration
9 95-8353