6
Warning: Do not block cooling air inlets and outlets!
Never expose the amplifier to water or mist.
Airflow
The amplifier must have a clear area to the sides and top for proper airflow, and to the rear for interconnection
wiring. It is especially important to avoid obstructions that block the air inlet on the top left and both lower
sides. Two inches of clearance is normally adequate for full ventilation. Keep any papers or loose objects that
might impede airflow away from the air inlets and outlets.
Locate the amplifier and power supply away from sensitive equipment such as microphones, audio processing
equipment, or low level audio or radio frequency amplifiers. Normally the best location for the power supply is
below the operating desk and away from antenna feedlines. This will keep fan noise and any RF coupling to a
minimum.
The power supply is factory wired for 200-260 Vac. It uses a standard NEMA-6-15P 15-ampere 240-volt plug.
The round center pin is the safety ground. Do not remove the safety ground.
CAUTION! Before connecting the power supply to an electrical outlet, always be sure you have completed the
following four steps:
1. Insert the 15-ampere 250V fuses into the two black fuse caps.
2. Insert the fuse and cap assemblies into the power supply’s fuse holders. The fuses lock in place
with a slight turn.
3. Connect the power supply to the amplifier.
4. Be sure the amplifier power switch is turned off.
Caution! Fuses have both voltage and current ratings. Use only 250V rated
fuses in this device. The voltage rating generally is marked on fuses. DO NOT
use automotive-type low voltage fuses in any power line application. For 240-
volt operation 15-ampere fast-blow fuses are required.
Warning: Never insert the power supply cord into the outlet unless the above
four steps have been completed!!
Position the amplifier at the desired location on your operating desk such that you have access to the rear panel,
and connect the rear panel cables. Do not connect the power mains at this time!
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