Bird Technologies 8320 - Manual (Page 26)

4. The RF section assembly is not subject to further
disassembly in the field. A defective unit must be
returned to the factory for repair.
RF Connector To install a new connector, reverse the procedures found in
RF Connector, Disassembly. Be sure that the projecting cen-
ter pin on the connector is carefully engaged and properly
seated in the mating socket of the load resistors and then
push it firmly home.
Coolant and
Seal
Models 8321, 8322 and 8323 - proceed as follows:
1. Inspect the output cover sealing ring (Model
8321, P/N 8321-025; Models 8322 and 8323, P/N
2430-089) on the output ring diaphragm and the
output end O-Ring (Model 8321, P/N 5-176,
Models 8322 and 8323, P/N 5-243). They should
both be soft, pliable and free of surface cracks. If
not, replace them.
2. After adding to or replacing the coolant, if re-
quired, reverse the disassembly procedure.
Model 8325
Inspect the output cover sealing ring, P/N 2430-089, on the
coolant cylinder and the output O-Ring, P/N 5-243. They
should both be soft, pliable and free of surface cracks. If not,
replace them.
Reassembly a. If the input O-Ring is not soft, pliable and free of
surface cracks, replace it.
b. After replacing the RF load resistor assembly, if
necessary, reverse the procedure of Coolant and
Seals, Disassembly.
Repairs Repairs, beyond what is covered in this instruction book,
will require return of the equipment to Bird Electronic Cor-
poration for service. Please consult the factory.
Shipment Pack and brace the attenuator in a suitable shipping con-
tainer, a sturdy corrugated paper box is satisfactory. It is
not necessary to remove the dielectric coolant before ship-
ping, but do not forget to replace the vent plug with the
shipping plug on Model 8325.
Storage No special preparations for storage are necessary other than
to cover the equipment to keep out dust and dirt. Store this
unit in a dry and dust free environment where the ambient
temperature will remain within the -40°C to +45°C (-40°F to
+113°F) working range of the equipment.
Bird Model 8320S Tenuline Attenuator
16