Bird Technologies 8329-300 - Manual (Page 25)

Because the Model 8329-300 attenuator is a passive device
and has no indicators or controls, it requires no operating
procedures or surveillance when the performance limits are
not exceeded. It should function faultlessly, absorbing and
converting the excess RF energy into heat indefinitely, if it
is properly maintained and not subjected to an overload.
Operation
Under
Abnormal
Conditions
The Model 8329-300 Attenuator is not intended or recom-
mended for outdoor use. The attenuator may be subjected to
moderate overloads for limited periods of time without over-
heating. However, this should be done cautiously, and it is
strongly recommended that if such a use is contemplated,
the attenuator should be equipped with a thermoswitch.
When interlocked with the power line to the source of RF
energy, the thermoswitch becomes a fail safe device to
guard the attenuator against the dangers of overheating.
Shutdown
WARNING
Never attempt to disconnect the equipment from the
transmission line while RF power is being applied.
Leaking RF energy is a potential health hazard.
This attenuator, being a passive device, cannot be shut off.
Only the optional blower can be shut off. The source of RF
energy must be turned off instead.
1. Turn off the source of RF power.
2. Let the blower run of at least five min-
utes to adequately cool the radiator.
3. Turn off the blower.
Emergency
Shutdown
Turn off the RF power at the source.
15
Operating Instructions