Det-Tronics U7602B-P Unitized UV Flame Detector/Controller - Manual (Page 15)

SYSTEM STARTUP/
oi TEST PROCEDURE
NOTE
When a manual oi test is performed, the Fault
relay will open momentarily after the test switch
is released and the Fire relay resets (no prob-
lems detected), which will result in a nuisance
fault annunciation if the external monitoring
equipment does not have a time delay.
When installation is complete, the following startup
procedure should be performed.
1. Disable any alarm and extinguishing equipment
being controlled by the U7602.
2. Apply input power to the U7602. Allow a five sec-
ond power-on delay.
3. Turn a UV source (such as the Det-Tronics model
W8066 UV Test Lamp) on or, if the oi feature is
being used (a switch wired between the oi TEST
terminal on TB1 and circuit ground), press the oi
test button for 5 to 10 seconds. The Fire Relay
will energize and, if the detector module is
equipped with an LED, the LED will illuminate.
4. Remove the UV source (or release the oi test but-
ton). The Fire Relay will de-energize. If the detec-
tor module has an LED, power must be removed
from the detector to reset (turn off) the LED.
5. Repeat this test for all U7602 Detector/Controllers
in the system.
6. Double check all detectors in the system to be sure
that they are properly aimed at the potential hazard.
7. If conduit is used, pour the conduit seals and
allow them to dry (see “Wiring Requirements”
section).
8. Turn on all extinguishing equipment connected to
the system.
B150 3
DETECTOR MODULE
MOUNTING LEGS (4)
MUST FIT TIGHT ONTO MOUNTING BLOCK
JUMPER PINS (2)
JUMPER MUST NOT BE INSTALLED
GUIDE PIN
SPLIT IN oi RING
(MUST BE POSITIONED
ON THE DOWNWARD SIDE
OF UNIT WHEN MOUNTED)
OPTIONAL LEDs
UV TEST LAMP* OPENING
A1504
oi RING
* UV TEST LAMP* OPENING MUST NOT BE ALIGNED ON TOP OF SPLIT IN oi RING
Figure 17—Detector Module Mounting
Figure 18—U7602 Detector/Controller Viewing Window
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