POINT TYPE FLAME DETECTOR "ALMAZ"
Page 11 of 27
8.2.
Sensitivity, inertia and electrical parameters testing of the FD.
8.2.1. For the testing assemble the circuit setup shown at Fig. 8.1. Switch on the power
supply and submit a constant voltage (10 ... 30) V to the FD. Check the absence of FD auto-
triggering.
8.2.2. Close the FD censor with opaque object and check the consumable current of FD in
standby mode with the ammeter A, which should be less than 0.25 mA
8.2.3. Set up the paraffin candle
Ǿ
25 mm at the distance of (4 ± 0,1) m from the FD
sensor.
8.2.4 Switch the measurement limit of ammeter A for measuring current of up to 50 mA.
8.2.5 Open the FD sensor while starting the stopwatch. At the moment of the FD LED
triggering stop the stopwatch. Determine the inertia (timing) by the stopwatch, which
should be no more than 5 seconds.
8.2.6. By voltmeters V determine the voltage supplied to the FD in worn condition, which
should not be more than 8 V.
8.2.7. Determine the current consumed by the FD in worn condition with the ammeter A,
which should be 20 + 10.2 mA.
8.2.8. Extinguish the candle. Then switch off the power supply after at least 3 seconds.
Please re-enable PSU power supply and check the FD is not triggered.
8.2.9. Set the incandescent lamp 100 W x 220V at the distance (4 ± 0,1) m from the FD
sensor and connect it to the network. Keep the FD the light of the lamp for 5 minutes, and
check the FD is not triggered.
8.2.10. Turn off the power supply. Disconnect the FD from scheme. The test is finished.
8.3. In case of the FD break down please contact the manufacturer for warranty repair,
for the post-warranty repair contact the manufacturer or the specialized repair
organizations.
POINT TYPE FLAME DETECTOR "ALMAZ"
Page 12 of 27
9. POSSIBLE MALFUNCTIONS AND TROUBLESHOOTING
9.1. List of possible simple malfunctions and troubleshooting, see table 9.1.
Table. 9.1.
Failure description,
outward manifestation and
additional signs of
malfunction
Possible cause
Solution
1. LED indicator is off in the
triggered state.
Improper connection of
alarm system loop.
No contact between the
wires loop and terminal
block.
Check the connection
schemes according to
Annexes 2, 3, 4 and 5. Check
contacts and tighten screws
of terminal block.
2. On the alarm system
console the signal "Loop
fault" is detected.
Missing end resistor.
Check contacts and tighten
screws of terminal block.
Check the R
OK
connection.
3. Reduced sensitivity of
the FD.
The sensor is covered
with dust.
Clear the FD with cloth,
moisturized with
technical alcohol (see p. 8.2)
