Elenos T25000, Руководство пользователя

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Hand Book T25000 -
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PERIODIC MAINTENANCE
Each time a new thermionic tube is installed, certain safety precautions should be observed in order to
maintain the rights of the guarantee of the equipment or the tube itself. For the first 200 hours of
operation, power output should be limited to 70% of the nominal maximum level. After the thermionic
tube has been operating for 200 hours, full RF power may be developed. At this point certain
adjustments should be performed to the stabilised filament power supply in order to prolong the life of
the thermionic tube (see chapter regarding filament voltage adjustment). Every three months, periodic
alignment of the amplifier tuning is necessary to compensate for consumption of the thermionic tube.
This is essential mainly if the radiating system is suffering adversely from the external ambient
conditions. Several parts of the T25000 are employed in the filtering of the cooling air; depending on
the relative ambient conditions, the anti-dust filters will need replacing at intervals dependant on the
quality of air in the area. The thermionic tube is subject to wear and has an operating life of about
10,000 hours under normal conditions. If the performance demanded of the equipment is less than
nominal, and if the filament voltage is regularly adjusted, an operating life of 15,000 hours or more
can be obtained.