Cooling - OM POWER OM2002+ User Manual

Be sure that your power system is correctly wired and properly rated! To use adequately sized and
connected grounding system is also very important.

4.5. Cooling

The amplifier must be installed in such a way that free flow of hot air from the amplifier is allowed.
Do not obstruct air intake and exhaust areas of the PA.
Installed axial fans provide adequate cooling of the amplifier, even during long time operation. It is automatically
activated when PA is switching ON. There are two modes of fan speed selectable. In the normal mode fan speed
is gradually rising with increasing temperature. In the contest mode the fan is switched at a constant high speed.
Contest mode should be activated during digi operation, too. Fan inside the power supply starts to operate
depending on the current drawn by the MOSFETs.
When the amplifier reaches inside temperature of 75 deg. Celsius, warning appears and fault LED starts blinking.
At 80 degrees transmitting will be automatically blocked, fault LED will light.
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