TM 11-5820-801-30
(2) For a Channel 1 installation, remove four
(13) Reinstall Refrigerator Unit Displacer
cap screws at waveguide bend 3A5 interface with
Assembly 4A3A2 and Drive Unit Assembly 4A3A3.
waveguide 3A7 For a Channel 2 installation, remove four
(14) Refasten the mounting clamps removed
cap screws at waveguide bend 3A5 interface with
in (11) above.
waveguide 3A11.
(15) To reinstall 2A3 place the module in 2A5
(3) Remove four cap screws from the pump
and fasten the four bolts removed in (7) above.
wave guide interface flange that interfaces 2A2 and 2A1.
(16) Make the refrigerator piping connections.
(4) Snap open the quick disconnects at the
(17) Reconnect WIP3 to 2A3J1, W1P4 to
2A2 signal output port thereby freeing 3A7 or 3A11
2A3J2 and W3P2 to 4A3A3J6.
waveguide. Lift out the waveguide 3A7 or 3A11.
(18) Reconnect waveguide 3A6 or 3A10 to the
(5) Remove cable plug WIP2 from 2A2J1.
signal input port quick disconnect. Connect waveguide
(6) Slide open the four mounting slide clips
bend 3A5 flange to 3A6 or 3A 10 with four cap screws
(snap slide latch on figure 3-14) that hold 2A2 in 2A5.
removed in (2) above.
(7) Lift out Second Stage Paramp Module
(19) Reconnect pump waveguide flange at the
2A2.
2A2/2A1 interface with four cap screws removed in (3)
(8) To reinstall 2A2, place the module in 2A5,
above.
(20) Remount Module 2A4 (a above).
slide closed the four mounting slide clips, reconnect
W1P2 to 2A2J1, place 3A7/3A11 waveguide on the quick
(21) If it is unnecessary to remove the
disconnects at the 2A2 signal output port, snap closed
Refrigerator Unit Assembly 4A3 from Module 2A3, omit
the connector, replace the four cap screws removed in
(9) through (14) above.
e. Klystron Power Supply 1PS1 Refer to figure 3-
step (2) above, in the flange that connects 3A5 to
3A7/3A11 and replace the four cap screws in the pump
3.
waveguide inter face flange 2A2/2A1 removed in (3)
(1) Remove W5P2/W5P3 from 1J1, W1P1
above. Reinstall Module 2A4 (a above).
from 1J2, and W2P1 from 1J3.
d. Vacuum Vessel (Module 2A3. Refer to figures
(2) Disconnect 1P1 from 1PS1J1.
(3) Remove Unit 1 from its rack by removing
(1) Remove Waveguide Filter Module 2A4 (a
eight mounting screws from the front panel and place it
upside down on a bench.
above).
(4) Remove nine bolts from bottom of Unit 1
(2) Remove four cap screws from the pump
chassis.
wave guide interface flange that interfaces 2A3 and 2A1.
(5) Carefully lift Unit 1 off of 1PS1.
(3) For a Channel 1 installation, remove four
(6) To reinstall 1PS1, place 1PS1 on a bench
cap screws at the waveguide bend 3A5 interface with
with the side stenciled "DANGER 1000 VOLTS" down.
wave guide 3A6 For a Channel 2 installation, remove
(7) Align the Unit 1 chassis (turned upside
four cap screws at the waveguide bend 3A5 interface
down) over 1PS1 so that 1PS1J1 is at the rear of the
with wave guide 3A10.
chassis Lower Unit 1 over 1PS1.
(4) Snap open the quick disconnects at the
(8) Align the nine mounting holes and replace
2A3 signal input port thereby freeing the 3A6 or 3A10
the nine bolts removed in (4) above.
wave guide Lift out the 3A6 or 3A10 waveguide.
(9) Rack mount Unit 1 with the eight mounting
(5) Disconnect
the
helium
lines
to
screws removed in step (3) above.
Refrigerator Unit Assembly 4A3.
(10) Reconnect 1P1 to 1PS1J1.
(6) Remove W1P3 from 2A3J1, W1P4 from
(11) Reconnect W1P1 to 1J2, W2P1 to 1J3,
2A3J2, and W3P2 from 4A3A3J6.
and W5P2/W5P3 to 1J1.
(7) Remove four mounting bolts (cap screws)
f.
Waveguide Switch 3A2. Refer to figure 3-15.
at corners of 2A3 front panel.
(1) Remove W5P6 from 3A2J1.
(8) Lift Vacuum Vessel Module 2A3 and
(2) Remove four cap screws at 3A2/3A4
Refrigerator Unit Assembly 4A3 out of Frame Assembly
interface (Port 2 of 3A2).
2A5.
(3) Remove four cap screws at 3A2/3A9
(9) To remove 4A3A2 and 4A3A3 from 2A3,
interface (Port 4 of 3A2).
attach evacuating and charging adapter (para 3-4) to
(4) Remove four cap screws at 3A2 Port 1
4A3A3 helium lines.
interface and remove 3A2.
(10) Open vacuum valve on the evacuating
(5) To replace 3A2, connect the antenna
and charging adapter (90" turn) to release the helium
waveguide to Port 1 of 3A2 with four cap screws
pressure in Refrigerator Unit Assembly 4A3.
removed in (4) above, connect 3A9 to Port 4 with four
(11) Loosen two bolts (cap screws) on each of
cap screws removed in (3) above and connect 3A4 to
the two mounting clamps that mount 4A3A3 to 4A3A1.
Port 2 with four cap screws removed in (2) above
Remove the clamps.
Reconnect W5P6 and 3A2J1.
(12) Lift out the Refrigerator Unit Drive Unit As
sembly 4A3A3 and Displacer Assembly 4A3A2.
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