29
MAN-0015 Rev 14 UVIRS-A/AR
November 07, 2008
ADDENDUM
TROUBLESHOOTING GUIDE: UV/IRS Flame Detectors
* See “Reflector Positioning” on page 9, “Cleaning Window/Lens and Reflector” on page 19 and “Manual VI (MVI) Test” on pages 17 & 18.*
Condition
Possible Cause
Possible Solution
Detector intermittently powers up/down
•
Faulty power supply or /wiring.
•
Faulty electronics.
•
Replace power supply or/ check wiring.
•
Contact factory.
Detector does not power up - Green LED Off
(See Figure 7 when locating LEDs, also refer to
“Start Up Procedure” on page 15)
•
Faulty power supply or/wiring.
•
Voltage to detector outside specified range.
•
Blown inline fuse.
•
Faulty electronics (no power to detector)
•
Replace power supply or/ check wiring.
•
Change/correct input voltage to detector.
•
Replace inline fuse.
•
Contact factory.
Unstable 4-20mA signal
•
Unshielded cables used for wiring or improper
shield and ground connection.
•
Faulty electronics.
•
Confirm shield & ground wiring. Follow wiring
guidelines specific to installation & equipment.
•
Contact factory.
No 4-20mA Output Signal (0 mA) at and after
start-up
(see “Start Up Procedure” on page 15)
•
Open/broken 4-20mA signal loop wiring.
•
Faulty electronics.
•
Close 4-20mA signal loop wiring.
•
Contact factory.
1.0mA Fault - Solid Yellow LED
(See Figure 7 on page 15 when locating LEDs)
•
Power supply failure.
•
Supply voltage to detector less than 10Vdc.
•
Detector internal power supply failure.
•
Replace power supply.
•
Confirm supply voltage (10-32Vdc) to detector.
•
Contact factory.
1.6mA Fault - Flashing Yellow LED
(See Figure 7 on page 15 when locating LEDs)
•
VI test fault in UV path.
•
*Align reflector properly. Clean reflector &/or
lens. Perform MVI test. Contact factory.
1.8mA Fault - Flashing Yellow LED
(See Figure 7 on page 15 when locating LEDs)
•
VI test fault in IR path.
•
*Align reflector properly. Clean reflector &/or
lens. Perform MVI test. Contact factory.
2.0mA Fault - Flashing Yellow LED
(See Figure 7 on page 15 when locating LEDs)
•
Missing VI reflector.
•
Complete misalignment of VI reflector.
•
Dirty VI reflector &/or lens.
•
Damaged or cracked lens.
•
*Fit & align VI reflector. Perform MVI test.
•
*Align VI reflector properly. Perform MVI test.
•
*Clean VI reflector &/or lens. Perform MVI test.
•
Contact factory.
6mA Output Signal
8mA Output Signal
•
UV radiation detected.
•
IR radiation detected.
OR
•
Detector sensor(s) too sensitive.
•
Locate & remove background UV radiation.
•
Locate & remove background IR radiation.
•
Adjust sensitivity & time delay settings. See
pages 13 & 14
16mA or 20mA, no fire present
•
UV & IR radiation present.
•
Damaged or faulty sensor(s).
•
Faulty electronics.
•
Locate & remove background UV & IR radiation.
•
Contact factory.
•
Contact factory.
erroneous relay state
(
for –AR, analog-relay model detector
)
•
Voltage to detector outside specified range.
•
Faulty electronics.
•
Adjust power supply voltage /check wiring.
•
Contact factory.
REF-0005 (Rev 0)
December 09, 2010.
