User manual FARFISA WB 3161

[. . . ] - Before connecting the power supply make sure that its rating data corresponds to this of the mains. - For electromagnetic reasons, all service modules must be installed near their power supply. [. . . ] By pushing a call button from the external push-button panel, it activates the bell of the corresponding video intercom and it activates the system for a time of about 100 seconds. If in the meantime another call occurs, the video intercom shuts itself OFF and connects the last call. In case more calls occur simultaneously, a protection circuit against overloading and short circuiting is provided to disable the timer and therefore to shut OFF the system. In the absence of calls from the door station, from any video intercom (if provided in the system) it is possible to control the entrance by pressing the button (control switch ON). Button from video To work the electric door lock release press the intercoms. In the two or more entrance systems all the audio and video communications and door lock release, from one entrance to the other, are automatically switched with the call or the control switch ON. In these systems the control switch ON from the video intercoms can interrupt a running communication, for this reason it is advisable to interrupt, by means of a relay. This function when the video system is active, giving the priority of the communication to the door stations for some examples see pages 251 and 252. for possible corrections the intervention of a specialized technician is advisable. The Contrast and Brightness adjustments, being subject to the environmental lighting conditions, are accessible from the under-neath by means of a screw driver. CONNECTION WITH FLOOR DISTRIBUTORS The video wires of each video intercom are insulated from the riser. Connections are made on the DV2D or DV4D floor video signal distributor box. [. . . ] Common of buttons 1 and 2 to separate the common of buttons cut here common of buttons 3 and 4 - The services towards the auxiliary entrances are independent among themselves and therefore they can function at the same time. PA = Door release push-button (optional) SE =Electric door lock (12VAC-1A max. [. . . ]