Arton ARTON-DL Benutzerhandbuch - Seite 4
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Seite drucken7.2.6 If the optical signal level is low it is necessary:
- set the normal level of signal turning the sensitivity adjustment screw clockwise;
- set the high level of signal turning the sensitivity adjustment screw clockwise;
- set the normal level of signal turning the sensitivity adjustment screw counter-
clockwise.
When the normal or high signal level can not be set with the sensitivity adjustment screw,
it is necessary to check the RANGE switch position and mechanically adjust the receiver and
transmitter again.
7.2.7 Attain the optimal coaxiality of the optical system windows' axes of the receiver
and transmitter, when any their deviation in horizontal and vertical planes only leads to optical
signal level decrease. Return the unit to the position corresponding to normal signal level.
7.2.8 If any deviation of the receiver or transmitter leads to optical signal level increase,
it is necessary to fix the unit's position, to set the normal signal level with the calibration
regulator. Then repeat the previous action.
7.2.9 Tighten attachment screws of the receiver and transmitter to brackets. The status of
the receiver's indicators should not change.
7.2.10 Calibrate the detector attaining the normal signal level, turning the calibration
regulator counter-clockwise and set it to the position near the indicators' switch from the normal
signal level mode to the low one.
7.2.11 Set the CALIBRATION switch on the receiver unit to «0» position. The left
indicator on the receiver should flash with low brightness every 1 sec. The right indicator of the
receiver should be off.
7.3 Verification of fire alarm system
7.3.1 De-energize the loop for not less than 5 s. After power supply was restored in not
more than 10 s the detector shall go to the standby mode of operation.
7.3.2 Obscure infrared beam between the receiver and transmitter with a partition, opaque
for infrared light. In 5 sec after the fixation of the partition the left indicator of the receiver will
turn on for about 5 sec. During this time the current consumption will increase by 25±5 mA which
the control panel will interpret as a SHORT-CIRCUIT message. If the power of the loop will be
off then in 5 sec the detector will automatically go to the standby mode. If within the next 5 sec
the partition will not be removed out of the sensitive zone, the detector will go to the fire mode.
7.3.3 Remove the partition from the sensitive zone and de-energize the loop for at least 5
sec.
7.3.4 Energize the loop. The standby mode will be set in 10 s.
7.3.5 Place the 1 dB optical attenuator for at least 15 sec in the in immediate proximity
(not greater than 2 cm) to the optical system window of the receiver. The detector shall remain in
the standby mode.
7.3.6 Remove the 1 dB optical attenuator and in the same way set the 2 dB optical
attenuator.
The detector will go to the pre-alarm mode, with both indicators flashing on the
receiver once every 1 sec 5 times. The brightness of the left indicators flashes will be lower than
those of the right one. After that the detector will go to the fire mode.
7.3.7 Deenergize the loop for at least 5 sec.
7.3.8 Energize the loop. The standby mode shall be set in 10 s.
7.3.9 When the infrared beam is totally obscured between the receiver and transmitter for
at least 5 sec, the detector will remain in the standby mode. If the obscuration of infrared beam
remains for more than 5 sec but less than 15 sec, the detector in 5 sec will go to the fault mode for
(5 1) sec and issue the SHORT-CIRCUIT message to the loop and again go to the standby mode.
If the obscuration of infrared beam remains for more than 15 sec, the detector issues the FIRE
message in the loop.