Cooling - DAD FZ10004 User Manual

FZ10004
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2.3 COOLING

The amplifier uses a forced-air cooling system with air flow from front to rear, maintaining a low operating
temperature within defined limits. Front-to-rear airflow is preferred as cooler air is present at the front in
nearly all applications. (This allows higher continuous power levels without encountering thermal prob-
lems). Never attempt to reverse the airflow. The amplifier modules require a pressure chamber between
the fans and heat sink, and this effect functions only in one direction.
Make sure that there is an adequate air supply in front of the amplifier, and that the rear of the amplifier
has sufficient space to allow the exhaust to escape. If the amplifier is rack-mounted, do not use covers or
doors on the front or rear of the rack.
Should a heat sink overheat, the temperature sensing circuits will mute the overheating channel.
If the power supply overheats, another sensing circuit will mute all output channels until the power sup-
ply cools to safe operating temperature. An early warning before shut down will be indicated on the front
panel LEDs.
Always make sure that the dust-filters behind the detachable front panel are clean to ensure maximum
possible airflow.
If the amplifier malfunctions due to dirty dust filters, any required repairs are not covered by the warranty.
Fig.8 - Cooling system