Precautions And Safety Instructions - SoundCraft K3 theatre User Manual

Precautions and Safety Instructions

General Precautions
Handling and Transport
Power Supplies & cables
Warning!
Signal Levels
Installation
Avoid storing or using the mixing console in conditions of excessive heat or cold, or
in positions where it is likely to be subject to vibration, dust or moisture. Do not use
any liquids to clean the fascia of the unit: a soft dry brush is ideal. Use only water
or ethyl alcohol to clean the trim and scribble strips. Other solvents may cause
damage to paint or plastic parts.
Avoid using the console close to strong sources of electromagnetic radiation (e.g.
video monitors, high-power electric cabling): this may cause degradation of the audio
quality due to induced voltages in connecting leads and chassis. For the same reason,
always site the power supply away from the unit.
Caution!
In all cases, refer servicing to qualified personnel.
The console is supplied in a strong carton. If it is necessary to move it any distance
after installation it is recommended that this packing is used to protect it. Be sure to
disconnect all cabling before moving. If the console is to be regularly moved we
recommend that it is installed in a foam lined flightcase. At all times avoid applying
excessive force to any knobs, switches or connectors.
Always use the power supply and cable supplied with the mixer: the use of alternative
supplies may cause damage and voids the warranty; the extension of power cables
may result in malfunction of the mixing console.
Always switch the power supply off before connecting or
disconnecting the mixer power cable, removing or installing
modules, and servicing. In the event of an electrical storm, or large
mains voltage fluctuations, immediately switch off the PSU and
unplug from the mains.
Always ensure that you use the correct PSU for your mixer. The K3 normally requires
1 X CPS275 supply for the 16 to 40 input frames and the 48 channel input Standard.
The 48 input Theatre frame uses 2 X CPS275
On 32 to 40 plus 48 input standard frames fitted with the optional VU overbridge
an additional CPS275 is required. (CPS275 supplied with the overbridge).
Note:
Each CPS275 can have a backup supply connected to it.
It is important to supply the correct input levels to the console, otherwise signal to
noise ratio or distortion performance may be degraded; and in extreme cases, damage
to the internal circuitry may result. Likewise, on all balanced inputs avoid sources
with large common mode DC, AC or RF voltages, as these will reduce the available
signal range on the inputs. Note that 0dBu = 0.775V RMS.
Refer to the Specifications section for details of input and output levels.
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