8
Chapter 5
Maintenance
General
The Model 8792 Termaline Coaxial Load Resistors are rugged units of simple design, requiring only nominal and
routine attention. The load is designed to operate for long periods of time if care is taken not to exceed its power
handling capabilities.
Preventative Maintenance
Due to the basic simplicity of construction, the major requirement for preventive maintenance is to keep the
equipment clean.
Inspection
With the rugged and simple construction of the loads, periodic inspection will only be necessary at six-month
intervals. Inspection should include the items listed below:
Cleanliness - Keep the housing and connector free of grime.
Inspect the load for completeness and general condition of the equipment.
A Troubleshooting Chart lists the commonly encountered problems, their possible causes and remedies.
Use this chart as a guide when analyzing symptoms.
Cleaning
Outside Surface
The outside surface of these loads should be wiped free of dust and dirt when necessary. Periodically wipe the
accumulated dust and lint off of the load housing.
RF Connector Surfaces
If the Teflon insulator or metallic contact surfaces of the connector should become dirty or grimy, wipe them off
with a soft cloth. Use a contact cleaner that is self-drying and leaves no residue to clean the hard to reach internal
portions.
Note:
Always handle the load with care to prevent subjecting it to unnecessary shock or impact.
Optional Flow Switch
The Water Flow Switch, P/N 5-898-7, should be checked and cleaned of any accumulated dirt on scale that might
impede free movement of the control gate in the switch. This should be done after several months use, or if
otherwise indicated.
WARNING
Never attempt to disconnect RF equipment from the transmission line while RF power
is being supplied. Leaking RF energy is a potential health hazard.
