Arton ARTON-DL Manuale d'uso - Pagina 4
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Stampa la pagina6.1 The installation should be made according to a pre‐elaborate plan where the
requirements of the manual should be considered.
ATTENTION: Only one detector should be connected to a fire alarm loop. It is
recommended to make connections of a control panel with the transmitter and the
receiver with the transmitter by twisted‐wire cable and lay in the special earthed cable
channels. Shielded cable should be used to provide additional protection against
electrical obstacles. It is not recommended to place fire alarm system cables in common
cable channels with other electrical wires.
6.2 It is not recommended to mount the units in places where the gases, vapour
and aerosols can cause corrosion. During repair works additional cover should be used to
protect units against debris.
6.3 The detector's sensitive zone is the infrared beam between the receiver and
transmitter. The sensitive zone diameter is determined by the optical system window. The
sensitive zone should not be overlapped by any objects.
6.4 The direct light exposure of the optical system window is not allowed.
6.5 Units of detectors should be installed to a rigid base (main wall, column, rafter
etc.) in an accessible place.
Note: It is allowed to install several detectors in one room allocating sensitive
zones parallel to each other. When the distance between parallel optical axes of sensitive
zones is less than 3 meters, different detector units should be mounted on the same wall:
transmitter, receiver, transmitter and so on.
6.6 Mark out the transmitter and receiver mounting places according to Figure1.
6.7 Fix the receiver and transmitter.
6.8 Connect to a control panel according to Figure 3‐ Figure 5.
7.1 Adjustment
7.1.1 Loose Rx and Tx bracket attaching screws, direct the optical system windows
to each other.
7.1.2 Tighten screw joints with force ensuring the fixation of the units' chosen
position and possibility of the following adjustment.
7.2 Calibration
7.2.1 The RANGE switch on Rx unit sets the distance between Tx and Rx. The
RANGE switch should be set to the unpressed position if the distance between the units is
up to 30 m. When the distance is greater than 30 m ‐ to the unpressed position.
7.2.2 Set the CALIBRATION switch on Rx to the pressed position.
7.2.3 Turn the fire alarm system on. The voltage drop on the EUI‐1 contacts «7»
and «8» should not be less than 8 V. In 10 sec after energizing both LEDs will
simultaneously flash on Tx every 1 sec. The indicator on EIU‐1.1 shall be continuously lit.
Depending on the adjustment precision, the following combinations of optical
indication on Rx are possible:
‐ bright flashes every 1sec when high level of optical signal has been detected;
‐ low brightness flashes of the left indicator every 1 sec and right indicator is off
when normal level of optical signal has been detected;
‐ bright flashes of the right indicator and low brightness flashes of the left
indicator every 1 sec when low level of optical signal has been detected;
6 INSTALLATION
7 ALIGNMENT AND CHECKING FOR PROPER OPERATION