Bird Technologies 8320 - Manual (Page 23)

2. Pull the connector straight out of its socket.
Coolant and
Seals
To replace or examine the coolant oil, proceed as follows:
Models 8321, 8322 and 8323
1. Carefully raise up the back (output connector)
end of the attenuator until the unit is resting on
its front (input connector) end.
2. Brace the attenuator into a vertical position to
avoid tipping it over. Take care not to exert ex-
cessive downward pressure on the attenuator
while it is in this position and thereby damage
the input connector.
3. Remove the V Band Clamp by loosening the
10-32 screw on its clamping blocks.
4. The Models 8322/23 have a special end cover. Re-
move this output end cover assembly which has a
specially designed bushing, P/N 2430-089, sealing
the attenuator output housing. Be careful when
disassembling to avoid damaging either the seal-
ing ring, P/N 2430-089, on the output housing or
the O-Ring, P/N 5-243, on the RF output section.
the interior of the radiator tank and the RF sec-
tion assembly are now exposed to view.
5. Check the coolant level.
Model 8325
1. Carefully raise up the back (output connector)
end of the attenuator until the unit is resting on
its front (input connector) end.
2. Brace the attenuator into a vertical position to
avoid tipping it over. Take care not to exert ex-
cessive downward pressure on the attenuator,
while it is in this position, and thereby damage
the input connector.
3. Use a 7/16 wrench to loosen the captive compres-
sion nut that connects the access tube to the res-
ervoir expansion tank. The reservoir is located on
the top rear side of the attenuator.
4. The nut must be completely unscrewed from the
threaded fitting on the reservoir tank.
Maintenance
13