Det-Tronics X3300 Protect-IR Multispectrum IR Flame Detector - Manual (Page 16)

3. Connect the oi test line to dc minus for 5 to 10
seconds or perform a pan fire test. The alarm relay
will change states and the red alarm LED will
illuminate when the device goes into an alarm
condition.
4. Disengage the oi test line or extinguish the test fire.
If the Alarm relay is configured for the standard
non-latching operation, it will change states and the
red LED will turn off. If the unit has latching relays,
they can be reset by removing input power (0.1
second minimum).
5. Repeat this test for all detectors in the system. If a
unit fails the test, refer to the “Troubleshooting”
section.
6. Verify that all detectors in the system are properly
aimed at the area to be protected.
7. Enable extinguishing equipment when the test is
complete.
TROUBLESHOOTING
WARNING
The detector contains no user serviceable
components and should never be opened.
1. Disable any extinguishing equipment that is
connected to the unit.
2. Inspect the viewing windows for contamination and
clean as necessary. The detector is relatively
insensitive to airborne contaminants, however, thick
deposits of ice, dirt, or oil will reduce sensitivity.
(Refer to the “Maintenance” section for complete
information regarding cleaning of the detector
viewing window.)
3. Check input power to the unit.
4. If the fire system has a logging function, check the
fire panel log for relay status and/or 4 to 20 mA
output information. See Table 5.
5. Turn off the input power to the detector and check
all wiring for continuity.
Important: Disconnect
wiring at the detector before checking system
wiring for continuity.
6. If all wiring checks out and cleaning of the oi
plate/window did not correct the fault condition,
check for high levels of background IR radiation by
covering the detector with the factory supplied
cover or aluminum foil. If the fault condition clears
within 6 minutes or less, extreme background IR is
present. Re-adjust the view of the detector away
from the IR source or relocate the detector.
If none of these actions corrects the problem, return the
detector to the factory for repair.
NOTE
Since the entire unit must be returned to the
factory for repair, it is highly recommended that a
complete spare be kept on hand for field
replacement to ensure continuous protection.
PERIODIC CHECKOUT PROCEDURE
Periodic testing is not required when the detector is
configured for automatic optical integrity testing. If the
X3300 is configured for manual
oi operation, a
checkout of the system using the oi feature should be
performed on a regularly scheduled basis to ensure that
the system is operating properly. To test the system,
perform the “Fire Alarm Test” as described in the
“Startup Procedure” section of this manual.
MAINTENANCE
IMPORTANT
Periodic flamepath inspections are not
recommended since the product is not intended to
be serviced and provides proper ingress protection
to eliminate potential deterioration of the flamepaths.
WARNING
The detector contains no user serviceable
components and should never be opened.
14
Current Level Status Action
0 mA Open Circuit Check wiring
connections.
1 mA General Fault Cycle power.
2 mA Oi Fault Clean windows.
3 mA Hi Background IR Remove IR source or
aim detector away
from IR source.
4 mA Normal Operation
20 mA Alarm
Table 5—Troubleshooting Guide