Dynacord H 2500 Manuel d'utilisateur télécharger pdf (Page 13)

PowerH SERIES

Owner’s Manual 13

2.5 Ventilation

As with all Dynacord power amps with fan

cooling, the airflow direction is front-to-rear,

obviously because there is more cold air

outside of the rack case than inside. The power

amplifier remains cooler and dissipating the

developing waste heat in a specific direction

gets easier. In general, setting up or mounting

the power amplifier has to be done in a way that

fresh air can enter unhindered at the front and

exhausted air can exit at the rear. When

installing the power amp in a case or rack

system, attention should be paid to these details

to provide sufficient ventilation. Allow for an air duct of at least 60 mm x 330 mm between the rear panel of

the power amplifier and the inner wall of the cabinet/rack case. Make sure that the duct reaches up to the

cabinet’s or the rack case’s top ventilation louvers. Leave room of at least 100 mm above the cabinet/rack

case for ventilation. Since temperatures inside of the cabinet/rack case can easily rise up to 40 °C during

operation of the power amp, it is mandatory to bear in mind the maximum allowable ambient temperature

for all other appliances installed in the same cabinet/rack case.

For fixed amplifier installations in a device control room that incorporate a central air-cooling system or air

conditioners, calculating the maximum heat emission may be necessary. Please also take notice of the

information on page 10.

2.6 Groundlift

The ground lift switch allows eliminating noise loops. When operating the power amplifier together with

other equipment in a rack case, setting the switch to the GROUNDED position is recommended. Set the

switch to UNGROUNDED, when the power amplifier is operated together with appliances with differing

ground potentials.

CAUTION:

Blocking/closing the power amp’s ventilation louvers is not permissible. Without

sufficient cooling/ventilation, the power amplifier may automatically enter protect

mode. Keep ventilation louvers free from dust to ensure unhindered airflow.

CAUTION:

Do not use the power amplifier near heat sources, like heater blowers, stoves or any

other heat radiating devices.

CAUTION:

To ensure trouble-free operation, make certain that the maximum allowable ambient tem-

perature of +40 °C is not exceeded.

Illustration 2.6: H2500/H5000 Ventilation

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Dynacord H 2500 Manuel d'utilisateur Page 13