Section 3 Troubleshooting And Maintenance; Model Ss4-Auv/-Auv2 Detector Faults; Cleaning Windowed Enclosures And Detectors; Personnel Training - Honeywell Fire Sentry SS4-AUV Installation Manual And Operating Manual

Model SS4-AUV/-AUV2 Ultraviolet (UV) Digital Electro-Optical Fire Detector
Installation Guide and Operating Manual
MAN0927_V3_1510-005_Rev H_06-13
3.1

Model SS4-AUV/-AUV2 Detector Faults

The Model SS4-AUV/-AUV2 Detector issues a Fault (or Trouble) condition by de-energizing the Fault
Relay (J5 connector). The following are Model Detector Faults:
a. Temperature Fault: The Detector faults if the internal temperature during operation rises above 85°C
or falls below -40°C causing both LEDs to blink rapidly. Corrective action for this type of fault requires
factory re-certification.
b. Excessive Input Voltage Fault: The Detector faults if the input voltage is too high (greater than 45
Volts) causing both LEDs to blink rapidly. Corrective action for this type of fault requires factory re-
certification.
c. Low Input Voltage Fault: The Detector faults if the input voltage is too low. The user should check the
voltage between Pins 1 and 4 of the power connector J1 or J2. In this case one LED is on until the
fault is corrected. If the voltage is below 15 Volts the user should check the wiring and the power
supply.
d. No Power Fault: The Detector faults if the input voltage is interrupted or turned off causing the
absence of LED indication. The user should measure the voltage between Pins 1 and 4 of the power
connector J1 or J2. If none or very low voltage is measured, the user should check the wiring and the
power supply.
e. Detector Fault: The Detector faults if its Optical Sensors fail the automatic built-in "through the lens"
test. In this case one LED is on until the fault is corrected. The user should first clean both inside and
outside of the lens thoroughly, then clean the exposed surface of the Detector sensors and the
protective grill mounted on the outside of the housing cover. If the fault has not been eliminated after
re-assembly and powering up for 10 to 15 minutes, factory service may be necessary.
f. Relay Fault: The Detector faults if one of its Relay circuits fails. In this case one LED is on until the
fault is corrected. The user should return the unit to the factory for service.
g. Self-Checking Fault: The Detector faults if its internal microprocessor finds a failure during self-
checking of the hardware and software. In this case one LED is on until the fault is corrected. This type
of fault may be caused by a number of reasons. The user should verify proper grounding of the device
and the absence of noise on the power cables. If fault persists the user should return the Detector to
the factory for service.
h. Analog "0" current: All the above faults will produce an output current loss (0 + 0.6mA) with the 4-20
mA module option.
3.2

Cleaning Windowed Enclosures and Detectors

The optical window (lens) of the Model SS4-AUV/-AUV2 Detector should be cleaned periodically on a
regular maintenance schedule. For clean area applications, perhaps monthly cleaning schedule will be
sufficient. For extremely contaminated application environments, such as truck filling stations with
presence of black carboneous smoke, daily cleaning schedule may be necessary.
Clean the window of the Detectors each time they are handled, the windows appear contaminated, fails
Built-In-Test, or the Detector fails an end-to-end test with a handheld UV/IR Test Lamp FT-2045 or FT-
2145. If necessary, clean the Detector Module Sensors each time the Detector has been disassembled for
wiring or replacement.
Use a blast of an air hose or an oil-free cloth to clean the enclosure window. Oil degrades the performance
of UV Detectors. Occasionally, the use of a solvent, such as alcohol is acceptable. No disassembly of the
Detector is required.
DO NOT USE SILICONE-BASED OR COMMERCIAL WINDOW CLEANING PRODUCTS.
THESE WILL DEGRADE THE MODEL SS4-AUV/-AUV2 DETECTOR PERFORMANCE.
3.3

Personnel Training

Troubleshooting of the Model SS4-AUV/-AUV2 Detector should be performed only by qualified authorized
personnel observing all standard safety practices. Although the Detector operates on safe 24 Volts DC, the
FM Approved or UL listed Fire Alarm Panel's power supply may operate on life threatening 120 or 240
Volts AC.
SECTION 3
TROUBLESHOOTING AND MAINTENANCE
12