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Installation Notes
Generally, it is important to install the power amplier in a way, that ensures unhindered front-to-rear
air circulation.
When installing the power amplier in a closed rack-shelf system, please make sure that adequate air-
ow is guaranteed. The space between the rear panel of the amplier and the inner wall of the rack-
case has to be at least 60 mm x 330 mm. A free space of at least 100 mm above the rack-shelf system
is needed to provide sufcient air circulation. Since, during operation, the temperature inside the rack
system could easily rise up to 40° C, the maximum allowable ambient temperatures of the rest of the
incorporated modules and appliances within a specic rack-shelf system have to be taken into careful
consideration.
When mounting the power am-
plier inside of a closed rack
system, it is recommended to
use special rack-rails or optio-
nally available rack-mount ears
NRS 90235 (112733) to prevent
bending of the appliance’s front
panel.
Note For maintained trouble-free operation of the appliance, the maximum admissible
ambient temperature of +40°C is not to be exceeded.
The amplier has to be protected from:
- water drops or splashes
- direct sunlight
- high ambient temperatures and the direct radiation of heat sources
- high humidity and moisture - heavy dust
- massive vibrations
Moving the amplier from a cold into a warm environment can result in the occurrence of condensation
on inner parts. Operating the appliance is only permissible after it has accommodated to the altered
temperature (approximately after one hour).Should any foreign solid parts or liquids inadvertently in-
trude the enclosure, immediately unplug the device from the power source and have it checked at a
DYNACORD service center, before further use.Cleaning the appliance should not be performed using
chemical solvents or sprays, as this might damage the nish and could even cause hazard re.
Before The First Operation
Before switching the amplier’s power on, the included mains cord has to be connected to a 230V
- 50/60 Hz wall outlet. On the appliance itself, the cord has to be connected to the 3-pole mains
socket.To remotely start the amplier, it is necessary to connect an external 24 V power source to
the terminal strip POWER REMOTE. Providing correct connection and with an external power supply
being present, the POWER ON indicator will light and the power amplier is ready for operation.The
mains switch POWER on the rear of the appliance is meant for service and maintenance purposes
only. Through bridging the mains switching relay this option provides the possibility to operate the am-
plier without an external 24 V power supply connected.
Caution The mains switch POWER on the rear of the appliance is only meant for
maintenance. Remotely switching off the device is not possible when the
POWER switch is engaged.
The DPA-Series power ampliers employ power-on switching delays of approximately 2 seconds.