Ecler HZA4-70F User Manual

Contents

53. INSTALLATION3.1. Placement and mountingThe amplifier is presented as a 2 unit high 19'' rack module. It is supplied with plastic washers inorder not to damage the unit when tightening the screws.It is very important not to enclose the amplifier or expose it to extreme temperatures as itgenerates heat. It’s also necessary to promote the passage of fresh air through the ventilationholes of the chassis, leaving at least one rack unit off between each device and installed aboveand below it in the rack frame.If the setup has several amplifiers in the same rack or in a closed cabinet with doors, it is highlyrecommended to supply them forced ventilation, installing fans at the upper and lower ends. This upwardair flow will help to dissipate the heat generated inside.In order to optimize as much as possible the correct thermal dissipation of equipment installed ina closed rack, it is advisable not to place power amplifiers under other appliances, but upon these ones.3.2. Mains connectionThe NZA4-70 amplifiers are fed with alternate currents, depending on the country, of 110-120,220-240V 47-63Hz. (see characteristics in the back of the unit).The amplifier should have an earth connection in good conditions (earth resistance, Rg=30 orless). The environment must be dry and dustless. Do not expose the unit to rain or water splashes, anddo not place liquid containers or incandescent objects like candles on top of the unit. Do not obstruct theventilation grids with any kind of material.In case there is some type of intervention and/or connection-disconnection of the amplifier, it is mostimportant to previously disconnect the mains power supply. There are no user or serviceable parts insidethe amplifier.You should avoid that the supply cable twists with the shielded signal cables, as this could lead tounwanted hum.In order to protect the unit from an eventual electrical overload or momentary power peaks fromthe internal circuits it carries a fuse. Should it ever blow up, unplug the unit from mains and replace itwith an identical one. If the new fuse blows again contact immediately with our Authorized TechnicalService.CAUTION: YOU MUST NEVER USE A HIGHER VALUE FUSE.