10
d:series
amplifi
ers
manual
startup
air fl
ow and thermal management
2.4 - air flow and thermal management
The d:series unit is a powerful amplifi er. Due to the idle loss and the heat arising under heavy working
conditions, it is necessary to cool the circuits adequately. Therefore, the amp is equipped with fi ve fans
with an air fl ow direction ‘front-to-rear’ and additional air slots for passive convection cooling.
Therefore, it is mandatory to ensure an unrestricted airfl ow of the cooling system. When mounting the
amplifi er in a rack, it is important that cool airfl ow is provided at the front panel of the amplifi er and warm
air can be exhausted from the rear.
We highly recommend to leave 1RU space above and underneath each amplifi er in the rack. If the
amplifi er was not maintained correctly, all necessary repairs and consequential costs will not be
covered by the warranty.
The system screen on the control surface allows you monitoring relevant temperature states of the amplifi er
(see chapter 5.2 ‘system screen’, page 24).
A detailed graphic of the fan curves can be found in chapter 5.6 ‘stealth screen’ (page 37).
Never block the ventilation louvers of the d:series amplifi er! Without
suffi cient cooling, the amplifi er will automatically enter a protection mode
and shut down the power supply for the amplifi er modules if necessary.
Don’t place the d:series amplifi er near heat sources, like blowers, stoves
or any other heat radiating devices. We also highly recommend not to
place the amplifi er directly above or underneath other devices in racks.
