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 TM 9-4120-428-14
0068 00
Flushing - Continued
15. Uncap the tubing at points 4 and 5.
16. Disconnect the pump discharge line from the tubing at point 2 and connect it to the tubing at point 5.
17. Disconnect the recovery line from the tubing at point 1 and connect it to the tubing at point 4.
18. Cap the tubing at points 1 and 2.
19. Start the pump and flush the line for approximately 10 minutes and then turn the pump off.
20. Move the pump discharge line from the tubing at point 5 to the valve at point 6. Cap the tubing at point 5.
21. Open the discharge line service valve (point 6).
22. Start the pump and flush the line for approximately 10 minutes and then turn the pump off.
23. Switch the pump lines so that the discharge line is connected to the tubing at point 4 and the recovery line is
connected to the valve at point 6.
24. Start the pump and flush the line for approximately 10 minutes and then turn the pump off.
25. Remove the cap from the tubing at point 2. Disconnect the pump discharge line from the tubing at point 4 and
connect it to the tubing at point 2. Cap the tubing at point 4.
26. Disconnect the pressure equalizer solenoid valve plug (P9) from the receptacle (J9).
27. Energize the pressure equalizer solenoid valve by applying 28 volts dc across pins A and B of plug (P9).
28. Start the pump and flush the line for approximately 10 minutes and then turn the pump off.
29. Remove the cap from the tubing at point 5.
30. Remove the pump discharge line from the tubing at point 2 and connect to the tubing at point 5.
31. Remove the recovery line from the valve at point 6 and connect it to the tubing at point 2. Close the valve at point 6.
32. Start the pump and flush the line for approximately 10 minutes and then turn the pump off.
33. De-energize the pressure equalizer solenoid valve by removing the voltage source from pins A and B of plug (P9).
34. Disconnect the discharge and recovery lines from the tubing and remove all caps from the tubing.
1. Make sure all caps are off the tubing ends and that the suction and discharge line service valves are open.
2. Connect the nitrogen line to the tubing at point 1 and release nitrogen into the system for approximately 5 minutes or
until moisture ceases to be discharged from the system.
3. Energize the bypass solenoid valve by applying 28 volts dc across pins A and B of plug (P8).
4. Release nitrogen into the system for approximately 5 minutes or until moisture ceases to be discharged from the
system.
5. Remove the nitrogen line from the tubing at point 1 and connect it to the tubing at point 2. Release nitrogen into the
system for approximately 5 minutes or until no moisture is discharged from the system.
6. De-energize the bypass solenoid valve and release nitrogen into the system for approximately 5 minutes or until
moisture ceases to be discharged from the system.
7. Energize the pressure equalizer solenoid valve by applying 28 volts dc across pins A and B of plug P9.
8. Releas e nitrogen into the system for approximately 5 minutes or until moisture ceases to be discharged from the
system.
9. Remove the nitrogen line from the tubing at point 2 and connect it to the tubing at point 5. Release nitrogen into the
system for approximately 5 minutes or until moisture ceases to be discharged from the system.
10. De-energize the pressure equalizer solenoid valve and release nitrogen into the system for approximately 5 minutes
or until moisture ceases to be discharged from the system.
0068 00-3
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