L-Acoustics LA8 User Manual
Also see for LA8: Owner's manualOwner's manualUser manualUser manualMaintenance manual
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Contents
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LA 8_U M_E N_5 .0 w w w . l - a c o u s t i c s . c o m 1 53.2 CoolingTo maintain a low and even operating temperature the LA8 contains two fans providing front to rear airflow.Instructions for proper ventilationDo not block the front and rear ventilation grills on a controller.Ensure that the front filter is clean and dust free.If the controller is rack-mounted: Do not block the ventilation grills with front or back panels or doors. If not possible, use a forced ventilationsystem and verify that the open area at the back is at least of 140 cm3 per controller. When stacking more than one controller in a rack, mount them directly on top of each other or close anyopen space in the rack with blank panels.3.3 Connecting to AC mains3.3.1 AC mains specificationsOnly connect the LA8 (CE type) or LA8US (US type) to an AC power outlet rated 230 V, 16 A, 50 - 60 Hz or120 V, 30 A, 50-60 Hz.Only connect the LA8JP (Japan type) to an AC power outlet rated 100 V, 30 A, 50 - 60 Hz or 200 V, 15 A, 50-60Hz.To plug the controller to a mains only use an outlet fitted with a pin tied to ground.Do not defeat the ground pin of the outlet as it connects the controller to earth.If the local mains does not conform to the power requirements or is unsure consult an electrician.The following table gives the LA8 power data in nominal use (4 Ω, 1/8 of maximum output power; see section 3.3.6):Table 1: LA8 Power supply data in nominal useVoltage (V)* Frequency (Hz) Current (A) Power consumption (W)120 / 230 (LA8, LA8US) 50 - 60 21 / 11 1500100 / 200 (LA8JP) 50 - 60 25 / 13 1500* If the mains voltage value increases up to more than 142 V the amplified controller will automatically switch to the 230 or 2 00 V mode.If the mains voltage value decreases down to less than 132 V the amplified controller will automatically switch to the 120 or 100 V mode.3.3.2 Three-phase circuitVerify that each phase works, in particular the neutral one.Balance the loads between the three phases.Never try to reproduce a 230 V circuit connecting an LA8 or LA8US to two live wires of a 120 V three-phasecircuit.Never try to reproduce a 200 V circuit connecting an LA8JP to two live wires of a 100 V three-phase circuit.3.3.3 Circuit breakerAlways interconnect a thermal circuit breaker between the controller and the mains.The circuit breaker current rating depends on the mains voltage rating as follows:16 A for 230 V or 30 A for 120 V (LA8, LA8US), 15 A for 200 V or 30 A for 100 V (LA8JP). |
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