BIRD Termaline 8792 Series, Operation Manual

Page: 22 / 30

Termaline® Load Resistor
11
8. Lift the resistor cap assembly [7] off.
Note:
O-Ring tension may cause a restriction and the resistor cap will require gentle prying under the
lip with a flat blade or screwdriver.
9. Lift the load resistor [13] straight up and out.
Note:
Occasionally, the load resistor will come out with the ground cap assembly due to O-Ring ten-
sion.
Note:
At this point, the load resistor may be replaced. To perform this, reverse this procedure and pro-
ceed to final assembly if the following criteria is met:

The spring fingers on the input resistor fitting [22] (
Figure 4 on page 13
) are snug and offer some
resistance when the resistor [13] is inserted into the load body.

The load resistor has not been fractured or badly burnt in operation Inspect the resistor thoroughly.
However, if either of these conditions are not as stated, further disassembly will be required. Proceed with
step
10
.
10. Remove the ground section housing [9] (
Figure 3 on page 13
) by grasping it firmly and unscrewing it from the
third housing section [11].
11. Unscrew the six 1/4-20 x 1 inch socket head cap screws [20] on the flange.
12. Remove the third housing section [11].
Note:
There is no advantage in separating the front and second housing sections. These are removed
as an entire unit by removing the six 1/4-20 x 1 inch socket head cap screws on the flange of the front
housing [19]
(
Figure 4 on page 13
) . The flow tube [21] may become dislodged and stay with the front
resistor fitting [22] when the front housing [19] is removed. If this should happen, just pull it loose from
the resistor fitting and push it back into the front housing section
13. Remove and inspect the following:

Resistor fitting [22]

Insulator [24]

Center conductor assembly [26]
14. Remove the 3/8-16 x 3/4 inch hex head machine screw [27] in the input center conductor [26].
15. Remove the input center conductor assembly.
Inspecting the Unit
Note:
Perform this once the resistor has been successfully removed.
1. Inspect the resistor carefully to ensure that it is not fractured.
Note:
In the majority of cases, even in the event of resistor failure, the resistor substrate will remain
intact.
2. Examine the inside of the load housing assembly for any apparent damage to the internal parts.
3. Do one of the following:

If no damage had been found - Proceed with resistor replacement,
see "Reassembling the Unit" on
page 12
.

If the resistor is broken, other internal parts appear to be damaged, or if they do not fit together
properly
-
"Replacing Fractured Resistor" on page 12