Bird Technologies 8890-400 Series - Manuale (Pagina 37)

If replacement of the RF input connector becomes necessary,
proceed as follows:
1. Remove the four 8-32 x 5/16 inch round head
machine screws from the corners of the RF con-
nector.
2. Pull the connector straight out.
3. Reverse the preceding procedure to install the
new connector, making certain that the project-
ing center contact pin of the “QC” connector is
carefully engaged and properly aligned with
the mating socket of the load resistor.
The “QC” connector may be readily replaced, as above, with
other AN standard type connectors specially manufactured
by Bird Electronic Corporation.
Shipment
If the occasion arises for the Series 8890-400 Wattmeter to
be shipped, the following steps should be taken:
1. Remove the vent plug and replace it with the
special shipping plug. The vent plug is at-
tached to the load by a short length of bead
chain. Wrap the vent plug with padding and
tape it to the side of the load for protection.
With the shipping plug installed, it is not nec-
essary to empty out the coolant.
2. After disconnecting the load from the transmis-
sion line wrap the connector with padding for
its protection.
3. The elements may be left in the sockets of the
line section with their arrows turned midway
between the measuring positions. Two addi-
tional elements can be placed in the storage
sockets in the sides of the meter housing. Any
additional elements should be well padded and
wrapped before being placed in the shipping
container.
4. Pad and wrap the dc connector plugs and then
coil the cables tightly. For convenience tape
them on the back of the meter.
27
Maintenance