Make sure the main Power Switch (marked "LINE", see Figure 2-1 Rear panel - Connections, Pos. (2)), on the
rear panel is in OFF position and insert amplifier's mains plug into the wall outlet prepared for it. The
amplifier remains switched off.
2.5. Installation of External Fan (option)
This fan (see Figure 2-2 External fan) is not necessary in SSB and CW modes, nor in continuous carrier modes
(RTTY, SSTV, etc.) with carrier down times of maximum 15 minutes and a subsequent pause of 3 minutes.
For higher duty cycles such as continuous broadcast or increased ambient temperatures the fan is
recommended. The auxiliary fan (92x92 mm) must be brushless type, 2...5 W, 24 VDC. It may be installed by
your dealer or by the manufacturer on request.
Figure 2-2 External fan
Figure 2-2 External fan
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