Lab.gruppen E 8:2 - Manual (Page 5)

5
Operating voltage
All E Series amplifiers have a universal power supply that operates
on mains from 100 – 240 V at 50 or 60 Hz. The IEC receptacle on
the rear panel accepts the supplied IEC cord which terminates in
a connector appropriate for the country of sale. When AC power
is connected, the amplifier goes into standby (amber indication on
power LEDs). It will go on if the power button is pressed (or if signal
is supplied to either input or if the GPI is closed). The power LED
shows green for “on” indication.
Grounding
Signal ground is floating via a resistor to chassis, and therefore
grounding is automatic. For safety reasons, never disconnect the
earth (ground) pin on the AC power cord. Use balanced input
connections to avoid hum and interference.
Front panel
The front panel presents the following amplifier status indicators:
POWER – Bi-color LED indicates standby (amber) and on (green).
TEMP (temperature) – Flashing amber indicates excessive
temperature in the power supply unit (PSU) or output stage(s).
When temperature exceeds the danger threshold, the LED
shows steady amber and the amplifier mutes.
The following indications are per channel:
SIG (input signal present) - Green indication when input signal
exceeds signal present threshold.
LIM (limit) – Illuminates when the amplifier limits the signal.
Limitingis engaged when the channel:
• Reaches the selected voltage limit threshold (as determined
by model and position of Rail Sensing Limiter (RSL) switch)
• Rail voltage sags below the selected threshold
• Maximum current output reached
• Mains voltage cannot maintain rail voltage
Warning
To reduce risk of fire or electric shock, do not expose this apparatus
to rain or moisture.
Français: Pour réduire les risques de blessure ou le choc électrique,
n’exposez pas l’appareil à la pluie ou à l’humidité.
Do not expose this system/apparatus to dripping or splashing and
ensure that no objects filled with liquids, such as vases, are placed
on the apparatus.
Français : L’appareil ne doit pas être exposé à des egouttements
d’eau ou des éclaboussures et de plus qu’aucun objet rempli de
liquide tel que des vases ne doit pas être placé sur l’appareil.
This apparatus must be connected to a mains socket outlet with a
protective earthing connection.
Français: Cet appareil doi t être raccordé á une prise de courant
qui est branchée à la terre.
The mains plug is used as a disconnect device and shall remain
readily operable.
Français: Lorsque la prise du réseau d’alimentation est utilisés
comme dispositif de déconnexion, ce dispositif doit demeuré
aisément accessible.
Unpacking and visual checks
Every Lab.gruppen amplifier is carefully tested and inspected before
leaving the factory and should arrive in perfect condition. If any
damage is discovered, please notify the shipping carrier immediately.
Save the packing materials for the carrier’s inspection and for any
future shipping.
Installation
Amplifier depth is 276 mm (10.9 in) and weight is approximately
4.2 kg (9.2 lbs) depending on model.
Free air flow from front to rear is required for cooling. No doors or
covers should be mounted either in front of or behind the amplifiers.
Amplifiers may be stacked directly on top of each other with no
spacing, though some spacing may enable more convenient
installation of rear cabling.
Cooling
Ensure that there is sufficient space in front of and behind the amplifiers
to allow for free air flow. Please refer to the full Operation Manual for
thermal dissipation value when installing large numbers of amplifiers in air
conditioned spaces.