User manual PROEL AUP480R

[. . . ] Heat: This apparatus should be placed away from heat sources, like radiators, heat registers, stoves or other products (including amplifiers) that produce heat. power sources: · This apparatus should be connected only to power source type specified in this owner's manual or on the unit. ⷠIf the supplied AC power cable plug is different from the wall socket, please contact an electrician to change the AC power plug. grounding or Polarization: · All precautions must be observed to don't defeat grounding or polarization. [. . . ] ⷠIn the following cases please refer to an authorized maintenance center or skilled personnel: - When the unit works improperly or it doesn't work at all. Maintenance: The user shouldn't attempt maintenance operation not described in this user's manual. Every maintenance operation should be done by qualified personnel only. ⷠDon't install, connect or disconnect power supply when the unit is powered, otherwise there's an high risk of electric shock. ⷠDon't open the unit, there are no user serviceable parts inside. ⷠIf you detect a particular smell from the unit, please immediately turn it off and disconnect the AC power cord. To obtain good speakers wire contacts, please tighten the screw terminals firmly. This unit should be placed in a rack (see INSTALLATION) and kept far from: Wet places Direct exposure to heat sources (like sun light) Non properly ventilated places Disconnect the power cord during storms or when the unit is not used. In order to prevent fire and electric shock risks, it's necessary to keep the unit far from sprinkling and drops. Please don't put cups, vases or other object containing liquids over the unit. In case of interferences from source signal, THD value will raise over 10%. Don't place this unit in a bookshelf o in other places with small room. Is not responsible for any damage that occurs due to a wrong unit installation. Thank you for choosing one of Proel products, and for your confidence towards our brand, synonymous of professionalism, accuracy, high quality and reliability. All our products are CE approved and designed for continuous use in professional installation systems. Description The power units series AUP120/240/480R have been designed specifically for microphone announcement and music diffusion in all PA installation applications . A further output 100V available only for call and announcement from microphone stand or telephone. Input for one or more pre-amplified microphone stand BM100A with priority function. ⷠOne input for call from telephone central with VOX priority . For a correct amplifier use, the volume level must be set between ­20 dB e 0 dB indicated by ON status of the first 5 LEDS , When the volume level makes only the latest 2 LEDS ON status (+3 dB +6 dB), the output signal could be distorted and the volume must be reduced (4) Main power switch (5) Tone control Tone control operates for high and low frequency range between +/- 10 dB in order to allow the correct reproduced signal equalization (6) Protection Fuse Prevent the unit against main power fluctuation and can be replaced . (7) Terminal screw for emergency power supply These 2 Terminal screws must be connected to 24VDC emergency supply to allow the operating continuity in case of black -out. Such control is available contemporaneously to a voice announcement sent from BM100A or from telephonce central . [. . . ] Attention To prevent electric shock risks, do never touch the outputs when the unit is working . The total power of the speakers cannot be below the output amplifier power . The cable section should be defined and increased considering these distances. LINE WITH CONSTANT VOLTAGE To have a line at constant voltage (50 / 70 / 100 V) connect 2 terminals respectively to COM and to the tension value of your choice (fig. [. . . ]