Bird Technologies 8921SC13-Manual - Manual (Page 24)

Bird 8920 Series Semiconductor Termaline Coaxial Load Resistor
14
Repair
RF Connector The 8921SC13 has a Bird “QC” connector which allows easy changing
of the RF connector. This does not disturb the coolant seal or affect
the electrical continuity of the load. To change the connector:
" Remove the four screws at the corners of the RF connector.
" Pull the connector straight out.
" Push the new connector in. Make sure that the center pin on the
connector is properly seated in the mating socket on the load.
" Replace the screws.
NOTE: If not using the LC connector normally supplied, the
frequency and power must be limited to the capabilities of the
connector.
Load Resistor To change the load resistor assembly:
1. Remove the vent plugs. Install the shipping plugs.
2. Supporting the unit to prevent damage to the interlock, stand it
on its back with the connector end up. In this position there is no
danger of the coolant pouring out through the resistor hole.
3. Unscrew and remove the clamping band.
4. Lift the load resistor assembly out of the tank and allow any
coolant to drip back into the tank.
5. The O-Ring should be free of twists and positioned evenly around
the flange of the resistor housing. If the O-ring shows signs of
deterioration (e.g. is no longer pliable or has surface cracks)
replace it.
WARNING
Disconnect the unit from all power sources before servicing.
The unit may be energized from multiple sources.
The potential for electric shock exists.
WARNING
BOTH vent plugs must be used at all times when the unit is
operating or cooling. Failure to do so could result in an
explosion or severe burns.