Bias Q5 User Guide V1.0
Page 13
4 Installation
4.1 Location
The intended use of Bias Q5 amplifiers is in a rack only.
The AC mains wirings of the units must be connected
to a terminal box provided with a properly breaker
(refer to 3.4 AC mains supply for more details). It is not
allowed to connect the Bias Q5 AC mains connection
directly to the power distribution system. For North
America market we recommend to use an approved
UL/CSA cable (i.e. ST 600 Vac 105°C 5 x 13 AWG).
In order to limit the risk of mechanical damages, the
amplifiers must be fixed to the rack using both frontal and
rear mounting brackets. We recommends to use eight M6
or 12-24 UNC-2B screws for threaded holes or cage nuts.
Install this amplifier as far as possible from radio tuners and
TV sets. An amplifier installed in close proximity of such
equipment may experience noise or generic performance
degradation. Placing and using the amplifier for long periods
of time on heat generating sources will affect its performance.
Avoid placing the amplifier on heat generating sources.
4.2 Cooling
Install the amplifier in a well-ventilated location: the
ventilation openings must not be impeded by any
item such as newspapers, tablecloths, curtains, etc;
keep a distance of at least 50 cm from the front
and rear ventilation openings of the amplifier.
All Void amplifiers implement a forced-air cooling system to
maintain low and constant operating temperatures. Drawn by
the internal fans, air enters from the front panel and is forced
over all components, exiting at the back of the amplifier.
The amplifier’s cooling system features “intelligent”
variable-speed DC fans which are controlled by the heatsink
temperature sensing circuits: the fans speed will increase only
when the temperature detected by the sensors rises over
carefully predetermined values. This ensures that fan noise
and internal dust accumulation are kept to a strict minimum.
Should however the amplifier be subject to an extreme
thermal load, the fan will force a very large volume of air
through the heat sink. In the extremely rare event that the
amplifier should dangerously overheat, sensing circuits
shut down all channels until the amplifier cools down to a
safe operating temperature. Normal operation is resumed
automatically without the need for user intervention.
Bias Q5 amplifiers can be stacked one on top of the other
due to the efficient cooling system they are equipped with.
There is however a safety limit to be observed: in
case a rack with closed back panels is used, leave
one rack unit empty every four installed amplifiers to
guarantee adequate air flow (see
Panel E, p. 6).
4.3 Cleaning
Always use a dry cloth for cleaning the chassis and the front
panel. Air filter cleaning should be scheduled according to
the dust levels in the amplifier’s operating environment.
Disconnect the AC mains source before
attempting to clean any part of the amplifier
In order to clean the vent filters you need to remove the front
cover: never attempt to open any other part of the unit.
By means of a metric hex key #6, unscrew the two
screws located on the left and right sides of the front
panel, (see figure 1) gently lift the cover and remove
the filter. You may use compressed air to remove the
dust from filters, or wash it with clean water: in the latter
case ensure that the filter is dry before reassembly.
4.4 AC mains supply
Bias Q5 amplifiers offers worldwide AC acceptance
and direct connection to any regional power line
configuration. Void’s legendarily reliable power supply is
now suitable to single-phase, two-phase or three-phase
operation from 90 V
AC
up to 464 V
AC
without need of
manual selection: true three-phase load balancing is
directly achievable by the unit without any complex load
assignment in the power distribution system design.
AC mains connection is provided by means of the euroblock
Phoenix PC 5/5-STF1-7,62 flying plug (Phoenix product ID
1777862). Proper assembly of the AC mains conductors to
the flying plug must respect the power line configuration.
Take care to connect any and all the five contacts of the
flying plug to the power cords according to the configuration
showed in
Panel I, J, K at p. 8 and p. 9
. In order to guarantee
the proper connection we recommend to use an approved
UL/CSA cable (i.e. ST 600Vac 105°C 5 x 13 AWG).
This device must be powered exclusively by
earth connected mains sockets in electrical
networks compliant to the IEC 364 or similar
rules.
Since the main power switch on this unit does not
provide a complete insulation of the equipment
from the main power, you must disconnect the
main power source to turn off all power.
Bias Q5
Figure 1: Use a #6 hex key to remove the front cover