Maintenance
11
Repair
RF Connector
The Bird 8890-300SC13 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:
1.
Remove the four screws at the corners of the RF connector.
2.
Pull the connector straight out.
3.
Push the new connector in.
Note:
Make sure that the center pin on the connector is properly seated in the mating socket on the
load.
4.
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
1.
Remove the vent plug and install the shipping plug.
2.
Stand the unit on its back with the connector end up.
Note:
In this position there is no danger of the coolant pouring out through the socket plug hole.
3.
Unscrew and remove the clamping band.
4.
Lift the load resistor assembly out of the tank.
5.
Allow any coolant to drip back into the tank.
6.
Check that the O-Ring is free of twists and positioned evenly around the flange of the resistor housing.
Note:
If the O-ring shows signs of deterioration (e.g. is no longer pliable or has surface cracks) replace
it.
7.
Replace the entire load resistor assembly.
Note:
It cannot be further disassembled.
8.
Put the clamping band in place and tighten it.
9.
Remove the shipping plug.
10. Install the vent plug.
Storing the Semiconductor
Cover the load before storing to keep out dust and dirt. It is not necessary to install the shipping plug. Store in a dry,
dust-free environment where the ambient temperature will remain between –40 and +45 °C (–40 to +113 °F).
WARNING
Disconnect the unit from all power sources before servicing. The unit may be
energized from multiple sources. The potential for electric shock exists.
CAUTION
The Bird 8890-300SC13 is not designed for use with a blower. Do not install a blower
on the unit. Doing so will void the warranty.
