AMERITRON AL-80B, Инструкция по эксплуатации

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AL-80B Instruction Manual
10
The packing materials used to ship this amplifier were specially designed to prevent shipping
damage. The original packing materials should be used to ship this amplifier. Replacement packing
materials may be purchased from Ameritron if original packing materials are unavailable or
damaged.
CAUTION: Never ship this amplifier with the tube installed. Ameritron will not be
responsible for shipping damage caused by improper packing.
Installation Guidelines And Suggestions
Location Of The Amplifier
Do not install the amplifier in excessively warm locations or near heating vents or radiators. Be
sure air can circulate freely around and through the amplifier cabinet. Provide an unobstructed cold
air inlet for the amplifier.
DO NOT place any books, magazines or equipment that will impede the
free flow of air on or near the cabinet ventilation holes.
Ventilation
The AL-80B ventilation system has been designed and tested to maintain tube seal temperatures
safely below the tube manufacturer's rating at 500 watts of continuous carrier output, or 800 watts of
continuous two-tone or CW power output when the amplifier is properly tuned. The fan in the AL-
80B is a permanently lubricated type that requires no maintenance in normal operation. To insure
adequate cooling in your installation, please observe the following:
1. Do not block or unduly restrict the ventilation holes in the cover. Be sure that the amplifier is
located in an area so the ventilation holes have open air circulation. It is particularly important
to avoid restricting the air inlet.
2. The exhaust airflow is over 30 CFM. Do not "assist" the exhaust airflow with cabinet mounted
fans.
3. The most efficient way to improve airflow is to pressurize the air inlet area. Be sure that any
fan used to assist the inlet airflow has at least a 60 CFM rating.
4. The exhaust air will become quite warm at high power levels. Do not place any heat sensitive
objects in the exhaust air stream.
Power Connections
The AL-80B is supplied with a NEMA 5-15P plug for 120 Vac operation. Full duty cycle operation
with ac supply voltages below 100 volts is not recommended. The "Transformer Connections"
section on page 12 shows the correct wiring for various supply voltages.
This amplifier has a current demand of 14 amperes at 120 Vac with 1000 watts of RF carrier output.
The average power line current during voice peaks on SSB will be approximately 9 amperes at 1000
watts PEP output. The average current demand on CW will be less than 12 amperes. Most normal
residential power lines and house-wiring will easily meet this current requirement.