BIRD TENULINE 8320 Series, Руководство по эксплуатации

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8320 Series Tenuline® Attenuator
18
12. Refill the coolant chamber to the levels shown in
"Coolant Level Inspection"
on page 18
.
13. Install the output end cover. See
"Install Output End Cover" on page 16
.
Replace RF Assembly
To replace the RF Assembly follow the steps in
"Replace Coolant Tank Input O ‐ ring
Seal" on page 17
.
The RF Assembly does not contain any replaceable components and must be
replaced in its entirety, see
"Replacement Parts" on page 22
.
Coolant Level Inspection
The level of the dielectric coolant, P/N 5 ‐ 030, should remain constant in the unit
even after prolonged usage under normal operating conditions. However, loss of
up to 10 percent of the full tank capacity should not impair the operating
efficiency of the attenuator.
Model 8325 Coolant Level Check
Note:
The Model 8325 coolant level may be check without
disassembling the attenuator using this procedure, if the unit is
already partially disassembled, check the coolant level using the
All
Models Coolant Level Check
.
1. Remove RF Power and allow attenuator to cool to room temperature.
2. With Attenuator in horizontal position remove Vent or Shipping Plug from
expansion tank.
3. Verify coolant level is approximately 1/8 inch (3.2 mm) deep within the
expansion tank. Add coolant if the coolant is not visible in the tank or depth
is less than 1/8 inch (3.2 mm).
All Models Coolant Level Check
4. Remove the output end cover. See
"Remove Output End Cover" on page 15
.

Measure the level of the coolant, see
Figure 6 on page 19
.

(Model 8321, 8322, 8323) The coolant should be about 7/8 inch (22.2
mm) below the face of the output end, with the unit in a vertical
position. The coolant should just cover the upper surface of the cubical
center block of the RF section assembly.

(Model 8325) Coolant should nearly fill the entire coolant tank, the
external expansion tank will provide room for expansion during
operation.